A free app for Android, by Kisaku.

The Workout Timer: Custom Training is an app that lets you create a customized plan that only takes a few minutes to complete. It also includes an alarm that will remind you to work out every day.

You can also use the app to check your progress over time. The app is very easy to use and will be a useful tool for you to stay in shape. It only takes a few minutes to complete a round of training, which is perfect for people who have a lot of free time.