This is the official page for the metronome app (by Wael Karram)

I can be directly contacted at waelkarram (at) gmail (dot) com
This app is FOSS, GPLv3, code hosted at this link.

About the app:

This app was born out of frustration with the currently available metronome apps on Android. After I could not find a simple metronome app that has the following criteria: