Are you sure the battery cycle count iOS apps still exist or work? A lot of those were either removed from app store or no longer work as of iOS 10 since Apple made the API calls private. You now have to tether to a computer and run
CoconutBattery to get the data.
Similar situation on Android since it depends on whether the phone exposes the data to end users. Could be as easy as a dialer code without app, a free app such as
Charge Cycle Battery Stats or via command line with
Termux app:
more /sys/class/power_supply/battery/battery_cycle
or
more /sys/devices/battery/power_supply/battery/battery_cycle
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This is more service dependent rather than OS dependent. The best implementation so far is Google Voice with Hangouts since a blocked # will get "this number is no longer in service" when they attempt to call so no ring, no VM and no notification. Should be the same on Google Fi service since the underlying technology is Google Voice.