Two ways to train
Timed HIIT or the gym: two tracks with a colour each, and each one knows what to keep in view.
Since 2021
Coming soon
Fitness that fits real life.
KAI Fitness brings gym training and timed HIIT together in one app. Ten minutes or a full hour, at home, at the gym or outdoors: log every set, let the intervals run themselves, and keep a routine that survives a busy week.
Coming soon
- 270+ animated exercises
- 16 languages
- since 2021
KAI FitnessGet the app
Scan the code with your phone’s camera.
Coming soon
The maths is done for you
Estimated 1RM, warm-up ramps, RPE and RIR as a percentage: inside the exercise, while you lift.
A history that keeps you going
Every session logged and the numbers over time: consistency is easier to hold on to when you can see it written down.
How it works
Two tracks, one app
What changes is not the menu: it is what the app keeps in view while you train. Pick a tab and look.
In the gym
Keep count, keep your flow
There is no clock running here: there are sets to close, each with its own reps and its own weight, ticked off as you lift.
- 1The exercises stay in a columnThe ones you have closed are ticked, the one you are on is highlighted.
- 2Close a set and the rest timer startsIt sits at the bottom: you never leave the screen you are working on.
- 3The maths happens right thereEstimated 1RM, percentages already in kilos, RPE and RIR: inside the exercise.
Timed
You keep the pace, it keeps the time
A circuit is a sequence of exercises with a work time and a rest time, repeated for a number of rounds. Work and rest run on their own, and the cues work without looking at the screen.
- 1Pick a circuit, or build oneWork, rest, rounds and the pause between rounds: four numbers and you are ready.
- 2The big ring shows what is leftBelow it, the exercise you are on and the one coming next.
- 3The two small rings keep countWhich exercise you are on, and which round of the circuit.
Why you need it
Consistency does not break on willpower. It breaks on logistics.
The day you skip is almost never the day you do not feel like it: it is the day training costs too much before it even starts. Deciding what to do. Remembering last week’s weights. Keeping count under a barbell. KAI takes that part and leaves you the movement.
270+animated exercises: you see how it is done, you do not go looking
10minutes are enough, when the day will not give you more
16languages, so you can train in yours
2021the year it came out: this is not a new experiment
The rest of the app
What holds for both tracks
Three parts that serve you whether you train against the clock or with weights.
See exactly how it is done
Every exercise in the catalogue comes with an animated demonstration of the movement, the equipment it calls for and your own history on it.
Every workout leaves a mark
A calendar of what you actually did, and how the numbers moved week after week.
Build your own
Exercises, sets, reps and rest, or a timed circuit round by round: you shape it around the time you have.
The two versions
What the PRO changes
The base version is free and complete: you can train from day one, with no time limit. PRO removes the caps and the ads.
Base
free, no expiryA whole app, not a demo: you really train, in the gym and against the clock, from the first day.
- Gym and timed workoutsBoth ways to train, in full.
- The full exercise catalogue270+ animated exercises, none locked away.
- Three workouts of your own per typeThree in the gym and three timed, built by you.
- The main techniquesThe set types you use every day.
- The last seven sessions per exerciseEnough to see how it is going.
No limits
PRO
subscriptionIt removes the caps and the ads. It is what you want once training becomes a serious thing and yesterday’s numbers matter.
- Unlimited workouts of your ownAs many as you like, of both kinds.
- All techniques and set typesIncluding the ones advanced programmes call for.
- Full history, exercise by exerciseEverything you have done, not just the last seven times.
- No adsOnly the training is left.
Before you start
KAI Fitness is a training tool, not a medical device, and it does not give medical advice. If you have a health condition, an injury or you are returning after a long break, check with a doctor before starting a new programme. For questions or problems with the app, there is the support page.
Your first workout is two taps away.
Pick one of the two tracks, and the first workout starts there.
Coming soon