AppHalt is available for macOS
Download AppHalt for Mac.
Get the signed and notarized AppHalt.dmg, then drag AppHalt to Applications.
Need the installer on this device anyway? Download the Mac DMG directly.
The download starts only when you choose the button above.
First thing to try
Pause one app, then resume it.
Choose an app you recognise and do not need right now. If it needs to keep handling a call, download, upload, sync, backup, recording, export or render, leave it running.