# Is it safe to delete CoreSimulator Caches on Mac?

- URL: https://moreroom.app/folders/simulator-caches
- Item: Simulator caches
- Location: `~/Library/Developer/CoreSimulator/Caches`
- Verdict: Safe to remove — Rebuilt or re-downloaded automatically when needed.
- Comes back on its own: yes
- Source: MoreRoom rules catalogue (2026-10-17), by Yando Pte. Ltd.

## What is it?

Simulators keep generated system files here, mainly the dyld shared caches built for each runtime so simulated devices boot and launch apps faster. It is created by the CoreSimulator service and typically takes a few gigabytes.

## What happens if you delete it?

The caches are rebuilt automatically the next time a simulator boots, which makes that first boot noticeably slower. No device or app data is stored here.

## How to remove it properly

Quit Simulator and Xcode, then move `~/Library/Developer/CoreSimulator/Caches` to the Trash with Finder’s Go › Go to Folder….