A free app for Android, by Heavy Bag Pro.

This is a handy app to help you with your training and keep you on track.

It’s a quick and easy way to track your rounds in boxing, kickboxing, MMA, Muay Thai, and other martial arts disciplines! Besides being a boxing bell, it is also suitable for HIIT, Tabata, and similar workout styles either if you want to train in the gym or at home.

With this ring app you can set the round lengths, breaks, and even intervals within the rounds to constantly switch up your exercises to make your workout fun and diverse!

This app is easy to use, just a two-screen setup. It is designed for any activity and discipline.