This app is absurdly loud and obnoxious. Add a volume for the alerts and the option of different sounds. I have to have my volume almost all the way down to get the alerts to a reasonable level but then I can't hear my normal phone alerts. The low glucose alert went off in a restaurant and busy store and everybody looked and thought something bad was happening. I'm even hard of hearing and it's still way way too loud. I turn my phone off to prevent alarms. Uninstalling after this sensor ends