Where Are iOS Simulator Devices Stored on Mac?
CoreSimulator Devices folder on macOS with per-simulator data, apps and logs.
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Each iOS simulator gets a UUID directory under CoreSimulator Devices with its own data container, installed apps and logs. Simulators multiply fast across iOS versions, and the folder balloons into tens of gigabytes.
Deleting unused simulators in Xcode reclaims the space safely. App data inside a simulator mirrors on-device containers for debugging.
Where Xcode stores this, by platform
~/Library/Developer/CoreSimulator/Devices
One UUID folder per simulator with data, logs and device.plist identifying the runtime. Manage them in Xcode under Settings > Platforms, or prune with xcrun simctl delete unavailable. Installed test apps live in data/Containers/Data/Application like on a real device.
Frequently asked questions
Why is CoreSimulator using so much disk?
Every downloaded runtime plus each created device keeps a full data container. Delete unavailable runtimes and old devices to reclaim tens of gigabytes.
Where are simulator app files?
Under the device UUID's data/Containers tree in the folder above, mirroring on-device sandbox paths for inspection.
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