Six screens, zero clutter
A dark, OLED-friendly UI that gets out of your way while you train.
A customizable interval timer for Brazilian Jiu-Jitsu, grappling, and combat sports. Custom rounds, tap counter, session log. Free timer. No banner ads. Nothing interrupts your rounds.
See what's inside →Built around how grapplers actually train, not how generic timers are made.
1 to 50 rounds, 10 seconds to 60 minutes per round. Or pick from 4 quick presets (5×5, 6×3, 8×2, 10×1).
Log submissions, sweeps, or any move during work intervals. One big button. Counts every tap.
Last 10 sessions auto-saved on your device. Review rolls, taps, and durations after class.
Tick beeps in the final seconds. Bell tone on round start. Victory chord on completion.
Crimson by default. Ocean, Ember and Ghost themes unlock with a short rewarded video — your timer, your colors.
No account, no sign-up. Your settings and session history stay on your phone. Optional themes unlock with a short rewarded video — no banner ads, and nothing interrupts a round.
A dark, OLED-friendly UI that gets out of your way while you train.
Most timer apps are boxing-first or generic interval tools. They don't understand how grapplers actually train.
BJJ Round Timer is built around the BJJ session: open mat rolling, drilling positions, competition-pace rounds. The tap counter alone makes it easier to track submission attempts across an entire session without breaking flow.
Drift-free timing and a loud round-end alarm that cuts through gym noise — even on silent mode — for when your eyes are on your partner, not your phone.
The timer runs on your device with no account and no sign-up. To support optional themes, the app shows rewarded ads through Google AdMob, which uses your device's advertising ID (resettable in your device settings). Read the full privacy policy below.
Read full Privacy Policy →