Works for me

The different reviews would lead one to wonder if were all using the same app...
The user, the phone and carrier, the different systems, and location differences must play a big part in the success, or lack of, of the app.
I live in Hectorville OK, use an iPhone 5s, and get VERY poor service, through AT&T, inside my home. Yet, the only hitch I ever have in the functionality of the app is, occasionally, if Im parked closely, right in front of the garage.
Otherwise, the app works spot on.

Lorettabsc about Alarm.com