Libre treats you like a 2 year old; can't disable low alarm, can't adjust alarm volume, can't adjust alarm tone, etc. When alarm goes off, it doesn't pop up on screen so you have to unlock your phone and find the alarm to shut it off as it's wailing in the background. Every time sugar levels go below/above a threshold the alarm goes of. EG.Alarm set at 200 and goes off: app determines sugar goes down to 199 then over 200 two minutes later, alarm goes off again. Libre puts very little effort in