---
id: mac-storage-basics.how-do-i-delete-old-ios-simulators
url: https://storagestudio.us/faq/mac-storage-basics/how-do-i-delete-old-ios-simulators
category: "Mac storage basics"
subcategory: "Developer tools"
question: "How do I delete old iOS simulators and simulator runtimes?"
alt_questions:
  - "remove ios simulators mac"
  - "xcrun simctl delete unavailable"
  - "simulator runtimes taking space"
  - "coresimulator folder huge"
  - "delete watchos simulators"
short_answer: "Run xcrun simctl delete unavailable to remove stale simulator devices, and remove unused runtimes in Xcode's settings under Platforms (Components in older versions)."
tags: ["xcode", "simulator", "developer"]
related: ["https://storagestudio.us/faq/mac-storage-basics/how-do-i-free-up-space-used-by-xcode"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# How do I delete old iOS simulators and simulator runtimes?

Two kinds of data build up:

- **Simulator devices** — in Terminal, `xcrun simctl delete unavailable` removes devices for runtimes you no longer have. You can also delete devices in Xcode's **Devices and Simulators** window.
- **Simulator runtimes** (whole iOS, watchOS, tvOS or visionOS versions) — remove ones you don't need from Xcode's settings, under **Platforms** (called Components in some older versions).

Quit Simulator first. Deleting a simulator also deletes apps and data installed in it.