Box Timer vs UBT

FKN Timer is a training timer built around your own routine — from technical drills and conditioning to full rounds on the bag, pads or mat. Build a workout that matches how you train, start it in one tap, and keep your next move clear while you work. BUILD YOUR SESSION • Create and save workouts for boxing, Muay Thai, kickboxing, MMA, BJJ, wrestling and more • Combine warm-ups, drills, rounds, rest, cooldowns and repeat blocks • Browse exercises by discipline, set durations and repetitions, then arrange the session your way • Rename, duplicate and personalise workouts with your own icon and colour MAKE IT PERSONAL • Create custom exercises for your own drills and training methods • Add an icon, colour, description and optional photo or video link • Keep custom exercises alongside the built-in catalogue and reuse them in any workout STAY IN THE ROUND • See the current exercise, what comes next and the remaining workout time at a glance • Pause, resume, restart, skip forward or move back through a session • Use sound assistance and choose your preferred round bell • Keep an active workout visible on the Lock Screen, Live Activity and Dynamic Island • Control your session from Home Screen and Lock Screen widgets FINISH WITH THE NUMBERS • Review completed segments, total time and skipped time after each workout • Get an estimated calorie burn • Unlock and apply new timer styles as you train From shadowboxing and bag work to grappling drills and conditioning, FKN Timer gives your training a structure that is yours — then keeps you focused until the round is done.

UBT is a round timer built for jiu-jitsu, readable from across the mat, and quiet about everything that isn't the clock. OFFICIAL IBJJF TIMES Every belt's match time is ready to go: white 5 min, blue 6, purple 7, brown 8, black 10. Train at the exact pace you'll compete at. TRAINING FORMATS Drill, warm-up, sparring, long roll, shark tank and single match, the sessions your academy already runs, one tap away. YOUR OWN WORKOUTS Set rounds, round length and rest. The app shows how the total breaks down: how many minutes rolling, how many resting. Save it and it's waiting for you next time. BUILT TO READ AT A GLANCE A dark screen with a huge countdown and a ring that changes color as the round moves: green while you roll, amber in the final stretch, red in the last seconds, blue on rest. You'll know where you are without walking over to the phone. SOUNDS THAT CUT THROUGH Eight tones, including gong, air horn, whistle, bell and buzzer, plus recorded voice calls for each moment of the session. Pick a different one for round start, rest and the end of the workout. Alerts play over your music instead of stopping it, and work with the phone on silent. MADE FOR TRAINING Screen stays awake while the round runs. Works in portrait and landscape. English, Portuguese and Spanish, following your phone's language. Free, with a single ad when you open the app, never during a round.