What is Simulator on Mac?
By Junaid, maker of Taskglass · Last reviewed
Xcode's Simulator app, which runs virtual iPhones, iPads and other Apple devices.
Simulator runs simulated Apple devices on your Mac so developers can test apps. Each booted simulated device runs its own set of background processes, so usage grows with the number of devices running. It's normal for a booted simulator to use noticeable resources.
- Category
- Developer tools
- Made by
- Apple
- Safe to quit:
- Yes
Shown in Activity Monitor as Simulator
Why is Simulator using so much CPU or memory?
- Several simulated devices booted at once
- A simulated device still booting or updating
- The app under test doing heavy work
What to do
- 1Shut down simulated devices you aren't using (File > Close or Device > Shut Down)
- 2Quit Simulator when you're done testing
- 3Erase a misbehaving device via Device > Erase All Content and Settings
Safe to quit? Yes.
Safe to quit; running simulated devices shut down.
Related processes
Part of the Taskglass Process Library