Vibralert Pro (fahrbot.apps.vibralert.pro) on Google Play
Vibralert is a simple app that vibrates your phone when a call's status changes. Can also be used to track status of expensive calls.Vibration type can be customized for each alert.NEEDS ROOTCurrently the following alerts are supported:- In-call minute timer- Outgoing call answered- Incoming call answered- Outgoing call failed- Active call endedIf you have more ideas, or something isn't working, please write to us before leaving a review!