Logged automatically
Say it once and it lands in the right place: weight, meals, water, training, sleep. No forms to keep up with.
Product
The whole system.
One conversation.
Your side is one conversation. Behind it, the AI and your data do the work. This page is the story. Every function in detail is its own page.
AI Coach
A coach that acts. Not just chats.
Say it, confirm it, logged. Kata proposes a card, you confirm with one tap, and the decision is recorded. Nothing saves itself unless you switch on auto mode, and every save can be undone.
- Chat, voice, photo
Type it, speak it, or send a photo of your plate. Everyday words become structured entries, and photos are read with Kata Plus.
- Knows all your data
It reads your recovery, training, nutrition, weight and phase before answering, and checks the web when facts matter.
- Lock in, or take it back
Kata proposes, you confirm with one tap. Saved the wrong thing? One tap unsaves it.
- Talk out loud
Hands-free conversation in a Kata voice, Mégane's first, plus a voice note from Kata on a milestone and your week read aloud. With Kata Plus and Kata Unlimited.
I weighed 101.6 and had a whey shake after training.
Good morning. That puts you 0.4 kg under your 7-day average, right on Cut pace. Recovery is at 72%, so today’s push session stands. Two entries ready for you:
Weight · Daily weigh-in101.6kg
SavedNutrition · Post-workoutWhey shake · 30 g protein
Lock-in modes
Manual or auto. You choose.
How much Kata may do on its own is a setting, not a surprise. Switch any time.
Manual mode
Kata proposes a lock-in card for every entry. Nothing is saved until you confirm it with a tap. Full control, card by card.
Auto mode
Kata saves directly as you talk. Every action still lands in your Kata log, auditable and undoable with one tap.
Your data, on its own
It logs itself. You just look.
Everything you mention is logged for you and turns into charts and details you can open, add to and adjust. All of it stays one question away: ask in the chat, and Kata answers from your own data.
Charts and details
Your numbers become clean trends and detail views you can open, explore and adjust at any time.
Just ask
Everything is reachable in the chat. Ask what happened, what changed, or what to do next, and Kata knows.
Activity insights
See every activity broken out: which sessions, how often, the time each takes and totals over 7 and 30 days. Tap any past day to see and edit what you did.
Physique
See the change. Not just the number.
The scale is one line of the story. Guided progress photos capture the rest: same angles, same light, laid side by side so twelve weeks of work land in one glance. Saved privately on your device.
- Guided anglesFront, side, back: the app frames each shot so every photo compares cleanly.
- Before and afterAny two dates, side by side, next to the weight and protein trends behind them.
- Physique analysisSend Kata a progress photo in the chat and it reads it beside your trends. Photo reading comes with Kata Plus.
IllustrationWeek 1Week 12
−6.8 kgsteadier energy · 12 weeks
In your data
Yours, and built to stay that way.
Everything above runs on data that lives on your phone, not on a server. Four things are true by construction, not by promise.
On your phone
Your logs, chats, photos and Kata's memory live on the device you use them on.
Sealed when it moves
The one backup we hold, for the web app and the Android app, is encrypted on your device under a key we never receive.
Never sold
No ads, no reselling, no data brokers. There is no business here that needs it.
Only on your word
Your logs, chats and photos leave only when you ask. A few small things sync on their own, like your notification settings, a daily heartbeat and a coarse sketch of your habits, and everything travels encrypted.
Everything it does
That was the story.
Here is the map.
A hundred small things you will actually use, in one app.
- Kata AI. A live, spoken conversation, the way you talk to a person, and Kata receives your words, never a recording. Comes with Kata Plus.
- Nutrition. Photograph your plate and Kata estimates the calories and macros, ready for you to confirm or adjust. Comes with Kata Plus.
- Sleep. Hours, stages, sleep debt and naps, from your wearable or logged by hand. Kata reads your night before it plans your day.
- Today. One live score made of equal parts of your day, a short line from Kata each morning, and a one-tap review that closes the day.
- Activity. Sets, weights and reps, prefilled from last time, with a next step suggested from your own history.
- Mind. Focus, energy, stress and calm, answered in your own words and drawn as four dials. The note you write never leaves your phone.
- Focus. Name what matters right now and count it your way: a plus for more, a minus for less.
- Nutrition. Point the camera at a pack and get a score with plain reasons written for you, your allergies first. Log it in one tap.
- Kata AI. Tap the mic and say it instead of typing. Kata turns everyday words into entries for food, training, water, sleep and more.
- Profile. Waist, hips, arms, chest and more, charted over time, so the tape tells the same honest story as the scale.
- Connections. Raise your wrist and ask. Score, protein, water and vitals at a glance, and every exchange lands in the same conversation.
- Nutrition. Morning and evening stacks, one tap to take them all, intake times and a clean adherence chart.
- Profile. Photograph a lab report and every value comes back as a row you confirm, correct or drop. Comes with Kata Plus.
- Sleep. Recovery, HRV and resting heart rate arrive overnight from your connections and shape what Kata asks of you today.
- Kata AI. What Kata remembers about you is a list, not a black box. Correct it, add to it, or tell it to forget.
- Focus. A calm pacer for a few slow breaths whenever you need one, in Focus and before sleep.
- Profile. Guided photos at the same angles and in the same light, laid side by side. They stay on your device.
- Nutrition. A target worked out each morning from your weight and training load. Log a glass in three words.
- Today. Every Sunday evening, your week closes in one picture, with one honest insight and one intention to carry into the next.
- Connections. Steps, workouts, sleep, weight and heart rate, read from Apple Health on iPhone or Health Connect on Android. Kata only reads and never writes back.
- Today. Weight reads as a smoothed trend, so one heavy dinner never counts as failure. Calories, sleep, strain and water sit beside it.
- Focus. Honest reduction trackers, for things like cigarettes, that count down day by day instead of up.
- Kata AI. Confirm every card yourself, or let Kata save the obvious ones. Every save lands in your Kata log, and you can undo it.
- Nutrition. Calories, protein, carbs and fat on clean charts, your recent meals one tap away, fiber and salt when you want them.
- Today. Page back to any day you have logged and edit it, with your wearable figures beside it.
- Focus. An opt-in cycle tracker with coaching that follows your phase, built on your own logged cycles. The log never leaves your device.
- Mind. Your four check-in answers become one recovery reading for your head, with a plain line under it: steady, protect today, ease off.
- Nutrition. Schedules, intake and refills, kept especially private. A refill reminder arrives about a week ahead.
- Profile. When a phase ends, it becomes a kept chapter, a cut, a build or a hold, with its honest numbers frozen at close.
- Connections. Connect WHOOP and recovery, strain, sleep and workouts arrive on their own.
- Kata AI. English, German, French, Italian, Spanish and Swedish, in writing and by voice. Units follow your region.
- Together. Share your form with someone you trust: one small dot a day each. Never your logs, never your numbers.
- Kata AI. Set your own reminders, or, with Kata Plus, ask Kata for a nudge in plain words. Quiet hours always hold.
- Mind. Clear, balanced, busy, overloaded or storm, shown only when your sleep, a session or a signal backs it up.
- Profile. Your recent weeks read into one orbital picture and one archetype, computed on your device.
- Today. Your day on the Home Screen and the Lock Screen, one tap from the right place in the app.
- Kata AI. Replies, the Weekly Kata and Sensei letters read aloud in Mégane's voice or another Kata voice. Comes with Kata Plus.
- Privacy. Your logs, chats, photos and Kata's memory live on your phone. No ads, no reselling, ever.
- Kata AI. One page lists every fact Kata holds about you and where it came from. Delete any of it on the spot.
- Privacy. A backup file your phone's own backup carries, iCloud on iPhone or Google on Android, and CSV or PDF exports whenever you want them.
- Kata AI. Rarely, when something is truly earned, a letter arrives, written for you. At most a handful a year.
- Profile. Real labs and check-up centers on a map, sorted by distance. Zurich is live, with more cities to follow.
Hover over any of them, or tap one, to read what it does.
FAQ
Fair questions, straight answers.
What is Kata, in one paragraph?
Kata is a personal health coach with a full system behind it. You talk: chat, voice, or a photo of your plate. The system does the rest: it logs weight, food, water, training, sleep and supplements, keeps your charts and streaks, remembers your decisions and plans your day around phase goals like Cut or Build. All of it lives on your device.
Do I still have to fill out forms and search food databases?
No. You say “weighed 101.6, whey shake after training” and Kata turns it into structured entries you confirm with one tap. With Kata Plus, photos work too: point the camera at a plate and get a calorie and macro estimate. Classic quick-log buttons exist for the days you would rather tap than talk.
Is Kata a medical product?
No. Kata organizes your own health routine and offers general, AI-assisted coaching. It does not diagnose, treat or replace a doctor, physiotherapist or dietitian. For medical questions, see a professional; Kata will tell you the same.
Does Kata replace my trainer or my doctor?
No, and it does not try to. Kata is the daily layer: it carries a plan through the week, keeps the numbers honest and answers at 22:00 when nobody else does. A good trainer, physio or doctor stays exactly as valuable; many users bring their trainer’s program into Kata and let it hold them to it. For anything medical, see a professional; Kata will tell you the same.
What are phases?
A phase is your current goal, stated plainly: Cut, Build, or your own variant. The phase sets the targets (protein, water, training focus, bedtime), and every module and every answer from Kata works toward it. Change the phase, and the whole system re-aims.
How do I sign up and create my profile?
Kata is in early access, and the doors open soon. Join the waitlist with your email and confirm it: your place is held, and invites go out in order. Every friend who joins through your personal link moves you forward. When your invite arrives, creating your account and setting up your profile takes a few minutes.
Which languages does Kata speak, and where is it available?
Kata works worldwide, wherever you can reach the app. The app is in English, German, French, Italian, Spanish and Swedish, and so are its voices; Kata replies in the language you write in, and this site speaks the same six. Prices adapt to your region in CHF, EUR, USD or SEK.
How do I reach support?
Through the contact form, or by email to contact@yourkata.com. A human reads every message and replies personally, usually within a day or two.
Does Kata work offline?
Partly, and it says so. Your data lives on the device, so you can log, look back at your day and open your charts without a connection: a small Offline label shows when you are, and what you log stays on the phone. Kata AI needs a connection, so Kata answers again once you are back online.
What is the waitlist, and when do the doors open?
Kata opens in early access. Join the waitlist with your email and confirm the address: that holds your place, and invites go out in order. The doors open soon, with no date set yet, for the iPhone app, the Android app and the web app on the same day.
Talk to it.
Start free: everything is included until 15 November, then every account gets 30 days of Kata Plus. It grows by invitation too: earn 3 months of Kata Plus for every friend who joins, up to 12 a year, and give each friend 1 free month.