Something sort of similar exists for iOS. BGTaskScheduler (https://developer.apple.com/documentation/backgroundtasks/bg...) is the public interface, but the internal interface allows for more subtle calculations about how long you can wait until this job is complete and what the optimal physical condition of the phone is (e.g. battery charging, user not using phone, wireless network connection). One of the important features is that when you run a job you have to check in fairly often (every second or so) to see if your job can still run, and if it can't, stop the job. This stops your two hour ML training session from burning battery for a while if the user wakes up at 2am and decides to go on a walk.