Freeing up space · Storage Profile, charts and Home
How much storage history does Storage Studio keep?
Short answer: About a year, kept on your Mac; older entries are trimmed automatically. Export to CSV periodically if you want a longer archive.
About a year. Older entries are trimmed automatically so the history doesn't grow forever. The history is kept on your Mac and isn't uploaded.
If you want to keep a longer record, export it to CSV periodically — see how to export your storage history.