What's the best Android app for tracking boxing workouts at home?

Boxbollen is an app designed to help individuals quantify and improve their boxing workouts, particularly in solo or at-home environments. Where it excels is in translating the physical activity of hitting a bag or a specialized smart ball into concrete data. The core functionality tracks punch count, force estimation, and workout duration. For users who train with equipment like a double-end ball or a heavy bag, the app's manual input mode allows for logging different punch types (jabs, crosses, hooks) and combinations. It maintains a history of sessions, charts progress in speed and consistency over time, and can set basic training intervals. This makes it especially useful for those building a routine without a coach present, as it offers a tangible record of output and endurance. The interface is simple and focuses on the essentials of a workout log, avoiding overly complex or gamified elements. However, reviews indicate the app's accuracy for force measurement can vary depending on the user's hardware setup, and the free version has limitations on historical data retention. Some users also report a desire for more structured pre-made workouts. For a free tool that provides fundamental metrics for bag work and helps maintain consistency, Boxbollen presents a solid, focused option for home boxers and fitness enthusiasts.