Freeing up space

Run Tuhi is a one-tap clean-up: it tidies rule-matched folders onto your fast drive, clears caches and rebuildable clutter, reclaims old local backups and can keep cloud files online-only, with live progress.

Yes. Run Tuhi only does regenerable or reversible things — clearing rebuildable caches, moving folders with a link left behind, reclaiming old local backups and keeping cloud files online-only. It never empties your Trash.

No. Run Tuhi never empties your Trash, whatever your settings. It's the one clean-up that can't be undone, so it stays your decision — empty it from Finder when you're sure.

No. Run Tuhi keeps going in the background after you close its window. Tap Run Tuhi again to reopen the progress view, and the result stays on the Home banner afterwards.

Run Tuhi checks what's actually worth clearing on your Mac before it starts and only adds a step when it would free a worthwhile amount, so the Step x of N count reflects this Mac today, not a fixed list.

It's the planning step at the start of a Run Tuhi clean-up: Storage Studio measures what's worth clearing on your Mac and builds the step list. No files are touched during it.

Storage Studio measures your Mac's free space just before and just after the run and reports the difference — the same figure the storage chart shows — rather than adding up estimates.

Local backups sit in space your Mac already counts as available, so clearing them doesn't raise the free-space figure. Storage Studio reports it on its own line instead of inflating what it freed.

Run Tuhi is the hands-off, one-tap clean-up; the Free Up Space wizard runs the same kind of steps but previews each one so you approve or untick items yourself.

No. Run Tuhi is the routine one-tap tidy-up; Emergency Space is for when you're out of room — you name a target and it plans the smallest, safest way to reach it, shown to you first.

It makes Storage Studio skip every rule that would delete your files, so your data is only ever moved. Cache cleanup still runs because caches rebuild. Find it in Preferences → Rules → Global overrides.

A weekly tidy-up is plenty for most Macs, and there's no need when space is healthy. The always-safe parts can also run on a schedule through your rules, and Storage Studio warns you if space starts running low.

Usually yes. Run Tuhi yields to your own work and eases off under heavy load. Ask Tuhi and it checks free space, memory, processor load and temperature; on Low Power Mode or heavy work, waiting is fine.

Smart Care is the name some Preferences switches use for the Run Tuhi one-tap clean-up on the Home screen. They're the same routine.

The last run's summary stays on the Home banner and in the Run Tuhi progress view, even after relaunch. Background Activity in the More menu has the fuller record of what ran.

No. Run Tuhi only runs steps that are safe unattended. Choices like which app to move or which drive to use appear as suggestions; only folders your own rules match are tidied onto the fast drive.

It clears rebuildable build and package-manager caches from tools such as Xcode, Homebrew, npm, pip, cargo and yarn. Projects and settings aren't touched; the next build may just take longer.

It removes diagnostic and crash reports and the Quick Look thumbnail cache. Your documents aren't affected and previews regenerate when needed — send any crash report you need before cleaning.

No. The Run Tuhi clean-up works on any supported Mac. Apple Intelligence only changes how the end-of-run summary is worded; without it you get a plain summary with the same facts.

It thins the oldest local snapshots on your startup disk, preferring ones already on Time Machine and never touching ones macOS requires. Your files and your Time Machine backups are unaffected.

It moves folders your rules already match to your fast drive, leaving links behind, then clears well-known app caches. It doesn't choose new folders by itself.

It's a three-step, preview-first clean-up: cache cleanup, relocation of large files to your fast drive, and optional cloud eviction. Nothing changes until you confirm each step.

It moves rule-matched folders to your fast drive with a shortcut left behind, then cleans well-known app caches — and, if you've turned it on per provider, makes downloaded cloud files online-only.

It's greyed out while automatic actions are paused or the service is stopped. Resume or start them from the popover and the button becomes available again.

Green means space was freed, blue means items were cleaned but free space didn't change overall, and orange means there was nothing left to clean. Dismiss it with the × button.

The clean-up worked, but free space ended up level — usually because new files were written meanwhile, the cleared space was already counted as available, or your Mac briefly held it in local backups.

Step 1 lists well-known cache locations — developer, browser and container build caches — with sizes. Untick anything you want to keep, then confirm; the deletion is staged so nothing is left half-deleted.

It finds files above your size floor (1 GB by default) in your working folders and lets you move each to your fast drive, relocate it with a shortcut left behind, or skip it.

It's an opt-in, per-provider step that makes downloaded cloud files online-only again. Files stay in the cloud and re-download when opened. iCloud is freed directly; other providers via their Remove Download command.

Yes. Only each step's confirm button writes to your disk, so you can open the wizard, look around, untick items and cancel with no side effects.

It follows a Free Up Space run that couldn't free much, offering one-tap chips to the next best step: move big apps, relocate large folders, keep iCloud files online-only, or manage local snapshots.

It appears in the Want more space? panel when five or more local snapshots are holding deleted space. It opens the Local Snapshots manager; you can also open that from More → Local Snapshots.

It's the review shown after you choose Free up space: each ticked option opened one level with real measured sizes, plus how much you'd gain. Nothing is touched until you confirm.

Sizes are measured as you tick, so a big folder may still be counting — you can carry on. If a folder can't be looked into, the move still works; only the preview breakdown is unavailable.

Yes. The folder stays put and its files become links to their new home on your fast drive, so apps, Finder and Spotlight still find them. It's a move, so they're only reachable while the drive is connected.

No. It's a move, not a copy: after the copy is verified, the data lives only on your fast drive and links stay in its place. Back up that drive like any drive holding your only copy.

Storage Studio can't estimate the time yet, so it says so rather than inventing a number. Once copying is steady you'll see a plain estimate like "12 minutes".

Reopen Emergency Space and press Show progress, or click the Moving… pill on the row in What's Using Space. Closing the window never stops the job, and a relaunch re-attaches to it.

Each item's space is only released after its copy is checked, so the freed figure catches up as each item completes. It shows space genuinely returned, not a prediction.

The result is measured, not predicted. Gaps usually come from your Mac holding freed space in local backups for a while, an item skipped or only partly moved, or new files written during the run.

It completes a move that left some files behind, in one click. Nothing was lost meanwhile. If macOS won't allow a link in that spot, Storage Studio says so rather than retrying.

Partly. Clearing app caches, releasing space held in local backups and making cloud files online-only all work without the drive. Moving folders and clear-ups that keep a recoverable copy need it connected.

It streams the run as it happens — the step, folders being moved and caches being cleaned. Open it from Free Up Space — view live progress; closing it doesn't stop the run.

Yes. The review step shows roughly how much the clean-up frees and what your free space would be afterwards. The final figure is measured and may differ, and you're told if it falls short.

Yes. Storage Studio clears only regenerable cache data that apps rebuild themselves — never your documents or settings. You may just notice a slightly slower first launch afterwards.

It clears only well-known regenerable cache subfolders inside apps' data — Cache, Code Cache, GPU caches, crash logs and similar — without moving anything. Your history, settings and personal data stay put.

Click Clean App Caches in the menu bar popover. It clears only regenerable cache folders such as Cache, Code Cache and GPU caches; conversation history, settings and personal data are never touched.

The app is rebuilding the cache it uses to load faster, so the first launch or build after clearing takes longer. Speed returns once it's rebuilt; nothing is lost.

No. Caches are rebuilt by the apps that own them, so they're cleared outright rather than kept. Other clear-ups go to the Recycle Vault, and moves can be reversed with Move back.

Xcode derived data and module caches, Homebrew's download cache, npm, pip, cargo and yarn caches, and Docker and Podman build caches — each shown with its size so you can untick what you want to keep.

Yes. Free Up Space's cache step includes the disk caches of Safari, Chrome, Firefox, Brave and Edge. It never moves a browser's profile folder, which holds your cookies, sign-ins and history.

Apps refill their caches as you use them, so caches always regrow to what your usage needs. Clear them on a schedule, or move a consistently large one to your fast drive.

Move that app's data to your fast drive — the Apps window or What's Using Space can do it with a link left behind — or let its cache be cleared automatically. Storage Studio warns you if it starts growing fast again.

A collapsed list of well-known caches and leftovers, with a count of how many are already empty on your Mac. It's collapsed so empty locations don't crowd out the real findings.

Yes. What's Using Space lists your iPhone and iPad backups and can move them to your fast drive — copied, checked, then freed from your Mac. Connect the drive before backing up or restoring a device; Move back… returns them.

Yes. What's Using Space lists Xcode simulators, archives and device support files and can move them to your fast drive with a link left behind; Xcode's derived data is cleared as a cache instead.

Your Mail library is shown but protected — Storage Studio won't move or clean it automatically. It does check Mail's saved-attachment leftovers; manage older messages inside Mail itself.

Yes. Cache cleanup is part of every Free Up Space run, which can run automatically at your daily run time outside Quiet Hours. You can also run it any time, or pause automatic actions.

Free Up Space can clear Docker's layer cache and Podman's build cache, and What's Using Space shows Docker's data size. For unused images and containers, Docker's own clean-up commands are the precise tool.

They've already been cleared, by you, an app or macOS. Storage Studio counts them instead of listing empty locations, so the real findings stand out.

It's the window that shows what's really on your disk, measured on your Mac: what changed since last time, your biggest folders to any depth, space held by backups, and common quick wins.

Yes. It's the same window: the menus call it What's Using Space and the popover button calls it Storage Inspector. Open it from either, or from the Home screen tile.

Measured on your Mac, not estimated. Where something can't be measured you're told so, and the footer says exactly what the figures do and don't cover.

Gone is room taken by new files (deleting them helps); Pinned is space held by snapshots of files you already deleted (deleting more won't help); Reclaimed is space your Mac released by itself.

It's the first measurement, so there's nothing to compare with yet. Storage Studio says so instead of showing misleading zeroes; check again later and the section fills in.

Open What's Using Space and use Biggest on this disk: folders are listed largest first, and you can drill into any of them to any depth. Collapse all resets the view.

macOS won't let Storage Studio read that folder, so its size can't be measured. It's labelled unreadable instead of being counted as empty; granting Full Disk Access usually fixes it.

ACTIONABLE marks items Storage Studio can safely move to your fast drive or clean. Rows without it are information only and are left alone, like protected system or mail data.

Some data, like system areas, active mail or an app's live databases, must stay where the system expects it, so it's shown but not offered. Small items aren't worth moving, and in-use ones get Move when closed.

A confirmation sheet shows the destination, size and any apps using the folder, with an optional auto-sync toggle. Confirm and a progress sheet tracks the move; the folder then keeps working from its original place.

It lists every folder currently relocated to your fast drive, with size, auto-sync status, when it moved and a one-click Move back. Open it with Relocated (N) in the header.

In What's Using Space, open Relocated (N) and press Move back on the folder. The sheet notes any new files and apps in use, then copies it home. You need enough free space on your Mac.

It lets a move back proceed even while an app is using the folder, with the fast-drive copy winning any conflict. Files that exist only on your Mac are always kept.

It shows whether new files added to a relocated folder follow it to your fast drive automatically: filled is on, grey pause is paused, grey hollow is not set up. Click a grey badge to turn it on.

It appears only on broken rows — data with no link, a link with no data, or an empty folder on the drive. Its confirmation then tidies up that case in one step. Reconnect the drive first if it's just unplugged.

It shows how much was measured and how many places were covered, and says plainly when areas were off-limits or measuring stopped early — hence wording like "at least".

A curated list: device backups, Xcode and Docker data, developer caches, chat and editor app data, your Downloads, Desktop, Documents and Trash, system leftovers, and big libraries like Photos and Mail.

It re-measures your disk from scratch, with results appearing as they arrive. You don't need it after moves made in the window; use it after big changes made elsewhere.

Rows lead with a plain label like "iOS device backups" so you know what they are; the real location is on the second line, selectable, and the folder icon reveals it in Finder.

The folder can't be moved back cleanly right now. Hover the disabled button for the reason; the row's orange or red warning line also shows whether moving back is still possible.

Move it to your fast drive from What's Using Space — a link keeps it opening normally — and turn on auto-sync so new downloads follow. Delete old installers yourself; Storage Studio won't delete your files.

Open More → Where did my space go?, pick a period or drag across the drop on the chart, and Storage Studio breaks down what grew, what was freed, what it did itself, held space, and what it couldn't account for.

About every half minute it reads how much room is left on your built-in drive — no scanning, no files read. Only when that number moves does it look further, paced so your work comes first.

Space is disappearing fast relative to what's left. Storage Studio weighs the rate against your remaining room and tells you roughly how many days you have at this rate, naming the app when it can.

Storage Studio warns on the rate compared with your remaining room, not on size alone, so ordinary downloads and updates on a roomy drive stay quiet. You can still review any period yourself.

It traces where new data went and names the app when it can identify one, hedges when it only looks likely, and says plainly when it couldn't tell. It never invents a name.

Mark that source as expected from the space notice and Storage Studio stops mentioning it. Its usage still appears in What's Using Space and the space breakdown.

Because one of Storage Studio's own jobs, such as a move or backup, was running and free space shifted. The notice says so instead of alarming you; Background Activity shows which job ran.

It's the part of the change Storage Studio couldn't attribute to anything it measured. It's shown honestly as its own line instead of being spread across the other figures.

The period reaches back before something was being measured — often held backup space in older readings — so Storage Studio flags it rather than present a partial answer as complete. It improves as newer readings accumulate.

It's space your Mac's own local snapshots are holding for files you've already moved or deleted. The files are gone; the room comes back by itself, usually within a day, or via Release that space.

It asks your Mac to release space held in automatic backups, then measures and tells you whether it came back, is on its way, or was kept for now. Nothing you still have is deleted.

Finder counts space held in automatic backups as free; the breakdown also shows what your Mac would hand out right now. Where they differ, Storage Studio shows both. The gap is usually held snapshot space.

Your Mac makes backup references to what was moved or removed, so freed space can be held again straight away. It's not a failure: the space usually returns within a day, or you can release it now.

macOS's local snapshots keep holding the space of files you delete until they age out, usually within a day. Storage Studio tells in-use space from held space, and you can release held space now in Local Snapshots.

No. Your storage history and the readings behind the charts stay on your Mac; nothing in them is uploaded. About a year is kept, and you can export it yourself.

Emergency Space is for when you're out of room: you say how much you need, it plans the smallest, safest set of steps to get there, shows you everything first, and reports what actually came back.

From More → Emergency Space, the red badge beside the bell on Home, the button on a low-space notification, or the Home banner when your drive is nearly full. It's never behind a licence prompt.

It's the shortcut to Emergency Space, shown only when your built-in drive is at least 95% full — a share of the drive rather than a fixed number of gigabytes.

You say how much room you need, and it picks the smallest, safest set of measured actions that reaches that figure, then stops. If it can't reach the target, it tells you up front.

Options are ordered by cost to you: space that returns without deleting anything first, then rebuildable caches and abandoned temporary files, then moves to your fast drive, and only then anything deliberate.

Anything that removes data is never ticked for you, however full the disk; only reversible options may arrive selected. Rows Storage Studio couldn't confidently identify are left unticked too, with the reason.

It deliberately stops at the target you set, changing as little as possible. Ask for more and it extends the plan with the next-safest options.

It says so instead of doing anything drastic. Next steps with the most room are usually moving big apps to your fast drive, clearing duplicates and keeping cloud files online-only — start with What's Using Space.

Partly. Releasing held space and anything that needs no destination still work. Clear-ups keep a recoverable copy on your fast drive, so they're explained but not offered until you plug it in.

A moved folder is now a set of links to your fast drive; moving it again would copy links over the real files. Storage Studio refuses only when everything is already linked; any real content still moves normally.

Yes. When it finishes, the What actually happened view compares the space that really came back with the prediction and tells you plainly if it fell short.

It warns you before you tick: either the folder's app is open and will need to quit first, or Storage Studio couldn't confidently identify the folder, so look inside before choosing it.

Use the notification's button to open Emergency Space, or open it later from More → Emergency Space or the red badge on Home. Enter how much room you need, review the plan, then confirm.

Yes. It runs in the background, so you can close the window and work; reopen Emergency Space and press Show progress to check on it. Your own work gets the disk first.

It measures your Mac's two disposable areas — the temporary area cleared at restart and the cache area macOS empties when tight — names the app behind what's there, and offers to clear folders that pass its safety checks.

Usually an app is writing into your Mac's hidden temporary or cache areas. Storage Studio measures those areas, names the app responsible, and offers to clear what's safe.

Each folder must pass four checks: nothing has it open, nothing is talking to it, nothing in it was touched recently, and a recoverable copy can be kept. Any check that can't be completed counts as a no.

An app can leave thousands of similar folders, so they're grouped into one row per app showing the total size, folder count, oldest age, and whether more were made today. You can still open the full list.

It reads the name from the folders and checks whether an app of that name is installed. If none is, it shows the name as found rather than guessing — often a helper tool or a removed app.

One app accounts for a large share of your temporary and cache areas. The rows clear the symptom; the banner points at the cause, so check that app's updates or settings if it keeps happening.

Clearing keeps a recoverable copy on your fast drive. Without the drive, that copy would sit on the same full disk and free nothing, so the rows are explained instead. Plug the drive in to clear them.

It measures its own footprint after launch, separating rebuildable caches, held copies and logs (offered for clearing) from the small records that make moves undoable (never removed). It tells you if anything is unexpectedly large.

So undo keeps working when the fast drive is away. The records are small and never offered for removal; older safety copies of them are moved to your fast drive when it's connected.

A little, sometimes: a restart clears your Mac's temporary area, but not its cache area. If space fills again quickly, Storage Studio can show which app is leaving folders behind.

Yes. Stop is always available while a clear-up runs; it finishes the folder in progress so nothing is half-removed, then reports what was cleared and what's left. Carry on resumes from there.

It finishes the folder already in progress so nothing is left half-removed, then halts. The screen explains what it's doing during that short gap.

It resumes a stopped clear-up from where it left off; folders already removed aren't touched again.

Each option opens to list every folder it will remove; during the run the current folder is named; afterwards you get the list of what was removed and, if stopped, what wasn't touched.

Yes. A whole clear-up is one entry in the Recycle Vault, so Undo last removal (or Restore on that entry) puts every folder back in one action.

It's resolved at the next launch: anything whose copy completed goes into the Recycle Vault, and anything unfinished is undone with the original left in place. Nothing is reported removed while still on disk.

It sends the same polite request as choosing Quit from the app's menu, so the app can save and close normally, then confirms it really exited. It's never a forced kill.

Storage Studio tells you the app is waiting on a save dialog and leaves the choice to you. Save or discard in the app, let it quit, then press Check again.

macOS housekeeping services like Spotlight indexing can't be quit and don't interfere with a move, so they're left off the list. Only apps you can quit and that matter are shown.

No. Files that only use part of their apparent size, like some VM disks and disk images, keep that efficiency when Storage Studio moves a folder, as long as the drive's format supports it.

After a successful move, Storage Studio asks macOS to release the freed space right away by clearing just enough local snapshots, so free space reflects the move without waiting.

It's a window listing the local snapshots macOS keeps on your drive, showing which are already on Time Machine, and letting you release their space safely without the Terminal.

Open More → Local Snapshots…, tap Manage snapshots after a Free Up Space run, or use the button beside Space held by backups in What's Using Space.

Green check: already on Time Machine, safe to delete. Orange warning: only on this Mac. Grey lock: required by macOS, can't be deleted. Question mark: status unknown, treat as Mac-only.

Yes for the right ones. Deleting a snapshot never touches your current files; green-checked ones are already on Time Machine. Required snapshots can't be deleted, and bulk delete skips anything not yet backed up.

It deletes every snapshot already backed up to Time Machine in one step, after a confirmation. Local-only and system-required snapshots are always skipped.

In Local Snapshots, type the amount you need under Custom reclaim and click Reclaim now. It's useful when, say, a macOS update needs a set amount of free space.

Folders you moved are on your fast drive, but snapshots from before the move still hold their old space. Click Reclaim to clear just enough snapshots to release it.

macOS needs it, usually for a system update, so it shows a Required pill and can't be deleted. It normally clears itself once that update is complete.

macOS reports only one combined size for all local snapshots, not per snapshot. Storage Studio shows that total honestly rather than inventing a split.

Required by macOS means leave it; Your Mac can clear this by itself means it'll go when room is needed; Not marked clearable means macOS hasn't flagged it either way. Each also shows its age and purpose.

Usually not. After each successful move Storage Studio clears just enough snapshots for the freed space to appear. The window is for older held space and one-off reclaims.

No. Local snapshots must stay on the drive whose data they refer to. Back up with Time Machine to an external drive, then delete local snapshots once they show the green check.

No. Local snapshots are short-term copies on your startup disk; Time Machine backups live on your backup drive. Storage Studio only thins local snapshots and prefers ones already backed up.

Purgeable space is room macOS keeps in reserve — mostly local snapshots — and frees on demand. Storage Studio shows it as its own line and lets you release it now in Local Snapshots.

What's Using Space's Space held by backups section shows the total held and the oldest snapshot's age; the Local Snapshots window lists each snapshot and its backup status.

It's the outcome banner showing the result of your last action — what was deleted or reclaimed and anything that couldn't be. A failure on one snapshot never stops the others.

It's Storage Studio's own recoverable trash: whatever the app removes for you — duplicates, clear-ups, uninstalled apps — goes there instead of being deleted, recoverable for about 6 months.

The files live on your external fast drive and your Mac keeps only a small list, so clearing really frees space. With no drive connected, items wait on your Mac within a size limit and move across when you reconnect.

About 6 months, then items clear automatically. Each item shows how long it has left; restore it before then, or delete it sooner with Delete now.

Open More → Recycle Vault, select the items and press Restore to put them back where they came from, or Restore to… to pick a folder. Connect your fast drive if the item needs it.

Nothing is overwritten: the restored copy is placed alongside the existing file so you keep both. Use Restore to… to put it in a different folder.

It restores everything from the most recent removal in one step — a whole clear-up counts as one entry — back to where it came from, without overwriting anything.

Select the items and choose Delete now, then confirm — it can't be undone. Big selections are erased one by one with a running count, so the window stays responsive.

For the full safety net, yes. Removed files rest on your external drive; without it they wait on your Mac with a warning and move across when you reconnect. Without any drive you'll see a critical reminder.

The on-Mac holding area for removed files is full (5 GB unless you change it) and no drive is connected, so removals pause rather than fill your disk. Connect your drive and they move across.

No. It's capped at a share of the drive — 20% by default, adjustable from 5% to 80% — and over budget it clears the oldest items already past their keep time first.

The Trash holds what you delete in Finder on the same disk. The Recycle Vault holds what Storage Studio removes, keeps it on your external drive so your Mac really gains space, and clears it after about 6 months.

The Recycle Vault recovers files Storage Studio removed; Restore Points undo moves, rolling back a batch of relocations to your fast drive.

Clear-ups of leftover folders, Emergency Space removals, duplicate removals on your Mac and uninstalled apps. Caches (which rebuild) and macOS's local snapshots aren't kept there.

That item's files are on your external drive, which isn't connected. Your Mac only keeps the list, so plug the drive in to restore it.

It's a single screen showing your Mac's storage DNA: a persona, the files you actually work on, storage over time, what's stored and where, cloud accounts, biggest space-users and suggestions — all measured on your Mac.

It's a summary of how this Mac is used — Developer, Media Keeper, Creative Pro, Document Worker, Archivist, Light User or All-Rounder — with a short story and a suggested next step from Tuhi.

It shows the files you've opened recently — your real working set — against everything you store, by type and folder, with an expandable list you can reveal in Finder.

It replaces the quick estimate in What's stored with precise, measured bytes per file category. It takes a little longer and is paced around your own work.

It shows how your storage is split across this Mac, your external drive and the cloud, using real usage read from each cloud provider rather than just local copies.

It reads each linked account's real usage live from the provider and, once analysed, shows file types, recent activity and how much is online-only. Large accounts are sampled and results are cached for a day.

It frees a downloaded cloud file's local space without deleting it: iCloud files become online-only in place; for Google Drive, Dropbox and OneDrive it opens Finder at the provider's Remove Download control.

Online-only files take no space on your Mac until opened, and Biggest space-users ranks files by space actually used on disk, so they're left off. Downloaded cloud files do appear, with a Free up button.

They're next steps tailored to your Mac from what the profile found; each opens the right Storage Studio tool, and nothing happens until you act there.

No. The Storage Profile is measured on your Mac and nothing personal leaves it, including your working set and persona.

They show how full your built-in and fast drives have been over time, on one chart with separate scales. You can choose ranges, zoom, hover for exact values, and break down any period. History stays on your Mac.

Drag across the chart to zoom into a range, scroll to pan, and hover for exact daily values. Seventeen range chips run from 24h to All time, and your last choice is remembered.

Your built-in and fast drives are often very different sizes, so each gets its own colour and scale; otherwise the smaller drive's changes would be flattened.

Right-click the chart and choose Export PNG… for an image or Export CSV for the full history as a spreadsheet file.

About a year, kept on your Mac; older entries are trimmed automatically. Export to CSV periodically if you want a longer archive.

The history builds from the day Storage Studio starts recording, so a new setup has little to show yet. The trend fills in over the following days.

The line is a live reading of everything at once: cleared space may already have counted as available, new files may have been written, or your Mac may be briefly holding the freed space. Drag across the period for the breakdown.

Open the Storage Profile's Biggest space-users list, which ranks files by the space they really use on your disk. For folders, use Biggest on this disk in What's Using Space.

It shows how much of your data is on your fast drive instead of this Mac, measured from the drive. It goes down if you move something back, so it can fall as well as rise.

They show, for the last 30 days, how much data left your built-in drive (OUT) and came back to it (IN) each day, stacked by service — fast drive or cloud account.

The Storage Studio's own footprint card in Storage Profile shows what the app keeps on your Mac (app, records, logs, caches, safety copies, files kept for you) and on your drive (moved folders, offloaded apps, versions, Recycle Vault), and what each is for.