Works well when app is onscreen on iPadOS 16
I previously left a negative review when running iPadOS 15. Since updating to iPadOS 16.7, it works well when the following conditions are met: 1) This app is left running onscreen before turning off the display 2) Background Mode option is toggled “on” in the app 3) Focus/Do Not Disturb mode is turned off on iPad (so the alarm sounds) 4) Make sure your device volume is loud enough to hear the alarm. With this magic combination, this app works very consistently to sound the alarm at 80% battery for me when charging. Previously, it was very hit-and-miss on iPadOS 15. Have not yet upgraded to iPadOS 17 (always wait a little bit to let Apple fix the big bugs first), so can’t speak to that OS compatibility yet. Gave it four out of five stars now - taking one star away due to the complexity involved to get it to consistently sound the alarm.