The idea seems to be that you open it when you go in. The app has settings to vibrate during the times when you are safe to leave, so you aren't taking your phone out to check, it's a push notification to you that you can go.

yes, please dont read the features of the app and instead make a snarky reply full of assumptions that are actually incorrect.

(this is why i dont go into the comments section anymore.)

Please don't reply to snark with more snark.