Can I Delete Xcode Caches?

Usually yes for regenerable build caches, but not every large Xcode folder is the same. Separate safe cache from simulators, archives, and device support before deleting.

Short answer

You can usually delete Xcode build cache and DerivedData after closing Xcode. The next build may be slower, but Xcode can recreate those files. Be more careful with archives, simulator data, and device support folders because they may affect testing, debugging, or old app releases.

Usually safe after closing Xcode

• ~/Library/Developer/Xcode/DerivedData
• old build products
• regenerable indexing and preview cache

Review before deleting

• ~/Library/Developer/CoreSimulator if you still test old iOS versions
• Xcode Archives if you may need symbolication or old release builds
• DeviceSupport folders for devices and OS versions you still connect

Read-only checks

du -sh ~/Library/Developer/Xcode/*
du -sh ~/Library/Developer/CoreSimulator/*
du -sh ~/Library/Developer/Xcode/Archives/*

Safer deletion judgment

1. Close Xcode and simulators.
2. Check folder sizes first.
3. Delete DerivedData/build cache first.
4. Move confirm-first folders to Trash instead of permanent deletion.
5. Open active projects and simulator targets before emptying Trash.