Worst "feature" bug: reports are for 30 day periods only! How about changing that period to "calendar month" (you know, those 31 & 28 day months!). :-( Does NOT work on Android 6.0.1 on tablet (whines about no Internet connection, the only app I know that does so). :-( Works OK on an Android 11 tablet. Also ResMed logic seems lame. Reports "mask on" hours (insure company oriented!), not actual while "asleep hours" (patient health oriented!) as Philips CPAP devices do. :-(