Great concept--but doesnt work

I bought this app for the mindfulness bell to help me center throughout the day. It does that--although not in the way described in the product information. Instead of randomly ringing up to 4 times an hour, it occasionally rings once an hour at exactly the same time you started the app. And setting a bell to ring every 30 minutes only yields occasional bells.

It is valuable--but cant give it the full 5 stars.

apollo1213 about Zazen Suite - Meditation Timer & Mindfulness Bell, v1.14