Jacks is the only activity tracking app built specifically for combat sports. Whether you're into Boxing, MMA, Jiu-Jitsu, or Muay Thai, Jacks helps you track, log, and share your sparring and workouts like never before.

Go beyond a basic ring timer — with Jacks, you can:

- Log every sparring session and build a personal training record.
- Track your training history, including who you sparred with and where.
- Tag your gym, so you always know where you’ve been putting in work.
- Search for gyms and opponents, making it easy to connect, train while traveling, and level up your game.

Jacks is your training partner outside the ring — helping you stay accountable, measure your progress, and grow as a fighter.

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View our terms of use at the following link: https://www.thejacks.app/terms-and-conditions