KAI: Gym & HIIT Tracker

Fitness that fits your life, not the other way around.

KAI puts the gym and HIIT in the same app. Ten minutes or a full hour, at home, at the gym or outdoors: what you need to train well today and come back tomorrow. No shouting, no "no excuses". A system that makes consistency easy.

TWO WAYS TO TRAIN
• Gym: sets, reps and load, with a rest timer between sets.
• HIIT: timed circuits — work, rest, rounds, pause. The timer runs, you move.

FOLLOW A PLAN, OR BUILD YOUR OWN
Open the built-in catalogue: 183 HIIT circuits and 90 gym routines across strength, hypertrophy, endurance, cardio and low-impact work. Filter by split, equipment, muscle group or the time you actually have.
Or be your own coach: build your routine exercise by exercise, set by set, and save it for next week.

WHILE YOU LIFT, THE MATH IS DONE FOR YOU
• Estimated 1RM from your best set, with the percentage table.
• A warm-up ramp worked out from your working weight.
• RPE / RIR to %1RM: effort turned into a number.
• Barbell loading: which plates go on each side.
• Supersets and advanced techniques, 14 set types, notes per exercise.
• Cardio machines with their own parameters: treadmill, bike, rower, elliptical, stair climber.

268 EXERCISES, ALL DEMONSTRATED
Every exercise comes with an animation of the movement, the muscles it works, the equipment it needs, a difficulty level and how to do it properly. Search, filter and star the ones you keep coming back to.

YOUR HISTORY, WITHOUT THE OBSESSION
A calendar of everything you have done, session by session. Per-exercise charts that rise as you improve. A profile that counts presence before performance, because the workout you actually did beats the perfect one you skipped.

WHY IT WORKS
• Short, well-built sessions: real substance, in the time you have.
• Home, gym or outdoors. First session or tenth year.
• 16 languages, light and dark theme, kg or lb.
• Works offline: no account, no sign-up. Your data stays on your phone.

KAI is built on one idea: systems beat willpower, and continuity beats perfection. Fitness that works inside your life, not over it.

Consistency, not perfection. That's KAI.

Disclaimer:
All workouts, exercises and movements provided in this application are intended solely for informational and educational purposes and should not be considered a substitute for professional programs.
Before starting any exercise or fitness program, it is essential to consult with a doctor or a qualified healthcare professional.

To use the application, you must review and accept its terms and conditions of use, which are accessible directly within the app or available on the website along with the privacy policy.

Terms of Use: https://www.kaifitsyou.com/terms
Privacy Policy: https://www.kaifitsyou.com/privacy