Not consistent. Have been using for a year with 2 kids. They have to turn off their phones while at school. However, it takes a long time for the app on their phones to truster when the phones are back on. And now 1 kid always shows offline even though the app on their phone says it obtains a location every few minutes and I can message them and sound the loud signal on their phone. Already checked all permissions. They match what the other kid's phone is set with. So 1 works now and 1 doesn't.