Functions

Everything it does.

The whole app, area by area. What you say, what Kata does with it, and what you get back.

Wherever you are

Made for the phone
in your pocket.

Your health happens away from a desk, so Kata is built for your phone first: full screen, with the nudges that keep a routine going.

iPhone

Notifications where you expect them, home and lock screen widgets and an Apple Watch app. Apple Health brings your steps, workouts and sleep in on its own.

Android

The same app, the same data, the same notifications. Google Health Connect brings in your steps, activity and workouts from whatever you already wear.

And on your computer

Kata works at a desk too. Sit down at a laptop and it is the same account, the same data, the same conversation you left on your phone. Coming soon, like the apps.

The coach

Questions in. Decisions out.

Type it, say it, or photograph it. Everyday words become structured data, the coach answers with your own numbers in mind, and nothing is saved until you say so.

Talk, speak, photograph
Write a line, tap the mic, or send a photo of your plate. Replies can be read back aloud, in the tone and the language you choose.
Knows the whole picture
Recovery, training, nutrition, weight and phase are read before every answer, with cited links when the facts matter.
You stay the editor
Confirm every card yourself, or let Kata save the obvious ones. A setting, not a surprise, and always undoable.
Yesterday counts too
Name a weekday or a date and it lands on that day. Kata never guesses a date: if it cannot tell, it asks instead of saving.
Scope-locked
A health coach, deliberately. It will not write your emails, and it says see a doctor when that is the right answer.

Getting started

Two ways to begin.

Set up in minutes either way, and everything stays editable later.

Start with the AI

A short conversation sets you up: your goal, your phase, your day. Already tracking elsewhere? Paste what your old app knows and Kata turns it into a sheet you approve line by line.

Enter it yourself

Prefer forms? A classic profile flow instead: your metrics, your goal, your training and your preferences, step by step and at your own pace, with nothing to talk through.

The whole picture

Every part of your health,
in one place.

Six places hold all of it: Today, Focus, Activity, Nutrition, Sleep and Mind. Stay in the conversation, or open the data view and edit by hand. Same app, one tap apart.

Chat view

Talk, log and ask. Kata handles the structure behind your words.

Data view

Open the numbers: profile, entries, charts and history, all editable by hand.

Every day

Nutrition

Log meals by text, by voice or by photo. Calories and the full macros on clean charts, your recent meals one tap away, fiber and salt in view when you want them.

Activity

Sets, weights and reps in a real workout player, prefilled from last time, with strain and a progression that reads your own history to suggest the next step.

Water

A target computed fresh each morning from your weight and your training load. Log a glass in three words and watch the day fill up.

Sleep

Hours, stages, sleep debt, night waking and naps, pulled in from your wearable or logged by hand. Kata reads how you slept before it plans your day.

Recovery

Recovery, HRV and resting heart rate arrive from your connections overnight and shape what Kata asks of you today.

Supplements

A section inside Nutrition, where everything that goes in belongs: morning and evening stacks, one-tap take-all, intake times and a clean adherence chart.

Your day, and the long line

Your day

One live day score from equal parts, a short line from your coach in the morning, a timeline of everything you logged, and a one-tap review that closes the day.

Trends & charts

Weight, calories, macros, sleep, strain, water and adherence as live charts. Weight reads as a smoothed trend, so one heavy dinner never counts as failure.

Physique

Guided progress photos at the same angles and the same light, laid side by side, next to the weight and protein trends behind the change.

Measurements

Waist, hips, arms, chest and more, captured with guided prompts and charted over time, so the tape tells the same honest story as the scale.

Focus areas

Name what matters right now and track it your way: a plus for more, a minus for less, and honest reduction trackers like cigarettes that count down.

Any day, reopened

Page back to any day you have ever logged. Weight, water, food, training, supplements, sleep and Mind are all editable there, your wearable figures beside them.

Handled with care

Medications

Schedules, intake and refills, treated as especially private: the names stay with you, and one refill reminder arrives about a week ahead.

Cycle

An opt-in cycle tracker with phase-aware coaching built on your own logged cycles. The log itself never leaves your device.

All of it stays one question away: ask what happened, what changed, or what to do next, and Kata answers from your own numbers.

Mind

How you are.
Not what you tracked.

You never rate your mood on a scale. Kata asks about your day in ordinary words, reads your answer beside your sleep, your training and your wearable, and gives your mind a reading of its own.

Four pillars

Focus, Energy, Stress and Calm, answered in your own words in a short check-in and drawn as four dials. A pillar with nothing behind it stays empty.

Stress, read twice

What you said and what your body measured sit side by side and are never averaged. When the two disagree, that is the interesting part, and Kata says so.

Mind recovery

All four pillars become one recovery reading with a plain line under it: recovered, steady, protect today, ease off. Recovery for your head, not your legs.

Inner weather

Clear, balanced, busy, overloaded or storm, drawn as a Kata mark and never an emoji. It appears only when your sleep, a session or a signal backs it up.

What changed

One observation in the morning, and only one: a run of calm days, a pillar that genuinely moved. If there is nothing true to say, the panel is not there.

Patterns, honestly

Calmer days after early nights, sharper focus on the days you trained. It needs weeks before it speaks, and counts days instead of inventing percentages.

Part of your day

A mind check-in is one of the equal parts your day score is made of. It shows on Today, on any day you reopen, in your week and in the Sensei letters.

Your words stay here

The four answers are what Kata reads. The note you write beside them never leaves your phone: not to the coach, not into a summary, not into a letter.

Practices stay in Focus

Meditate, Journal, Breathwork and the breathing pacer are things you choose and count, so they live in Focus. Focus is what you work on. Mind is how you are.

Kata is a coach, not a medical or crisis service. It observes patterns, never diagnoses, and always points you to real help when you need it.

Blood work

Kata can read paper.

Photograph a lab report and the coach reads it with you, marker by marker: value, unit and the reference range exactly as printed. Nothing is stored until you have checked every line.

Find a test near you

Real labs and check-up centers on a map, sorted by distance. You book with the provider yourself. Zurich is live, more cities follow.

The review sheet

Every value comes back as an editable row you confirm, correct or drop. Blood work always waits for you, even with automatic saving on.

Doctor's letters

A findings or referral letter is never mined for numbers. You get the forward-looking context in plain words, and the reading stays your doctor's.

Menus, read in the moment

Photograph a restaurant menu and get advice against your phase, your goals and today's numbers. Nothing from a menu is stored.

The hard rules

In range and out of range come only from the report's own printed ranges. Kata never supplies one from memory.
Contextualize, never diagnose. An unusual value is framed in context, and your doctor owns the reading.
Your values live on your phone, never in the daily sync and never in analytics. They leave only by your explicit choice.

Find a blood test near you

The scanner

A score that is yours,
not the internet's.

Open the scanner and the camera is already reading. The facts come from Open Food Facts, the score is computed on your phone against your goals and your phase, so the same product reads differently for two people.

The camera is the screenA live frame does the reading. No barcode, or one too worn to catch? Photograph the label instead, or type the digits.
Why, for youEvery score arrives with a handful of plain reasons written for your situation, not a badge you have to interpret.
Allergies come firstAnything you have told Kata you react to outranks everything else in the read, and says so in the first line.
Straight into your dayHappy with it? Log it as food in one tap, macros already filled in. Your recent scans stay on your phone.

Personal and adaptive

One system.
Shaped to you.

The 型 idea made literal: everyone gets the same reliable coach, and no two people get the same one.

Built for the everydayTuned for routines, phases and real life, not general chat. Several large models behind the scenes, the right one picked for the moment.
It mirrors youTwo dry words get two sharp lines back. Ask it to be shorter, or to stop suggesting runs, and it holds, across sessions.
Knows you, privatelyYour logs, chats, memory and photos live on your device. Messages go to the AI only to make the reply, and no one keeps them.

Reminders from your own data

Ask for a nudge in plain words and Kata schedules a real notification. It also suggests one when your last 30 days genuinely show a pattern.

Your language, spoken

English, German, French, Italian, Spanish and Swedish, in writing and by voice. Units follow your region, metric or imperial, and switch any time.

Memory you can read

What the coach remembers about you is a list, not a black box. Correct it, add to it, or tell it to forget, and it holds from then on.

Locked in

Every confirmed card lands in your Locked in log, with its category and date. Read it, edit it, undo it. Nothing changes without a trace.

What Kata knows about me

One page lists every fact the coach holds about you, each with where it came from: told, imported, observed. Delete any of it on the spot.

Your archetype

Your recent weeks read into one orbital picture and one archetype, computed on your device. Tap any node to jump to the area behind it.

Rituals

A week that closes.
Chapters that keep.

Practice needs rhythm. Weeks close, phases become chapters, and rare letters mark what is genuinely earned.

The Weekly Kata

Sunday evening the week closes: your days, sessions, protein, sleep and mind in one picture, one honest insight, and one intention you carry into the next.

Seasons

When a phase ends it becomes a kept chapter: a cut, a build, a hold, a peak, with its honest numbers frozen at close. Your year gets a shelf.

Sensei letters

Rarely, when something is truly earned, a letter arrives: written for you, in your language, never routine. At most a handful a year, and it stays on your device.

In Mégane's voice

The founder
checks in.

Mégane, who built Kata, lends her real voice to a hands free conversation and to the moments that matter. The premium coach, with a pulse.

Talk to Kata

Start a hands free conversation and talk out loud, the way you would with a person. Your voice is transcribed on your phone, so what leaves is words, not audio.

A note from Mégane

Reach a real milestone, a weight goal, a strength PB, a month smoke free, and a short voice note lands in your chat. Rare by design, never spam.

Your week, read aloud

One tap and your Weekly Kata or a Sensei letter is read to you in Mégane's voice: unhurried, and yours to play whenever you want it.

Kata voices come with Kata Plus and Kata Unlimited, always fair use. Every account starts with 30 days of Plus, and everything you track stays free forever.

See the plans

Kata Duo

Practice is easier
together.

Share your form with someone you trust. One small dot a day each: kept the day, or not. Never your logs, never your numbers, no feed and no nudges. Up to five duos at once, and either side can end one at any time.

How Kata Duo works

Kept the day
Not this time
Nothing logged

Apple Watch

Raise your wrist.
Say it.

A native watch app, not a mirrored screen. Home is the breathing Kata circle with one invitation under it: tap and talk.

Tap to talkOne tap on the circle opens dictation. Say it, and the question goes straight to the coach, which answers short because a wrist is a glance.
The same conversationThe watch opens on the thread you left on your phone, and every exchange from your wrist lands back in it. Replies can be read aloud.
ComplicationsYour day score, your protein, your water, or one inline line on the face. Tap any of them and you land in the right place.
Your day, at a glanceScore, move, exercise and protein, today's water and training, and your vitals. Turn the crown to scrub the last six hours.

The watch app signs itself in from your paired iPhone, so there is no second login, and it reads your health data only, never writes to it.

Connections

Bring your wearables in.

Connect your devices and their data flows into your day on its own. Your own entries always win: log something by hand and no importer will touch it. A workout that arrives shows up as a detected activity you log with one tap.

WHOOP

Recovery, resting heart rate, HRV, blood oxygen, sleep stages and strain sync overnight and shape today's plan.

Apple Health & Health Connect

On iPhone, Apple Health brings steps, energy, workouts, sleep and weight. On Android, Google Health Connect brings steps, activity and workouts.

Strava

In the works

Not connectable yet. When it lands it will be read only, so your runs and rides flow in and Kata never writes anything back.

Your data

Yours, and built
to stay that way.

Kata is local-first. Your logs, your chats, the coach's memory, your photos and your seasons live on the device you use them on. No ads, no reselling, no exceptions.

On your device

Everything personal stays where you put it. The coach endpoint forwards your message to make the reply and keeps no copy of it.

Backup & restore

An encrypted backup you own: your own private iCloud on iPhone, your own account backup elsewhere. Sign in on a new phone and it is there.

Export, any time

Take everything with you as CSV files or a clean PDF report, rendered on your device. Your data is yours to walk away with.

The secured share

Send a doctor a summary you previewed yourself: encrypted before it leaves, so our server only holds ciphertext, and it expires on its own.

FAQ

Fair questions, straight answers.

How does voice input work?

Tap the microphone, talk, done: your words are transcribed on your device and handled exactly like a typed message, so “big glass of water and 20 minutes on the bike” becomes two entries to confirm. People use it while cooking, walking or driving. Replies can also be read aloud: you set the tone Kata speaks in and your language, and the voice follows from that.

Which AI model runs Kata?

Kata runs on our own coaching intelligence, Kata AI, included free during the launch phase. Behind the scenes it uses several large language models and picks the right one for the moment. It reads your data on your device, can render charts from your own numbers in the chat, and checks the web when facts matter.

Does Kata adapt to how I write and live?

Yes, and that is most of its value. It learns your shorthand (“the usual shake” means your shake), your schedule, your lifts, the way you talk about hard days. Decisions land in a memory you can read and edit, so Kata gets more yours over time without ever guessing in the dark.

Which integrations does Kata support?

WHOOP and Apple Health. From WHOOP: recovery, HRV, resting heart rate, sleep stages and strain sync overnight. From Apple Health, or Health Connect on Android: steps, active energy, workouts, sleep and weight. Your own entries always take priority, the connection stays on your device, and Kata never keeps a copy. Details in the integration docs.

Is Kata a mobile app?

Yes, and it is built for the phone first: notifications, nudges and your whole day where you expect them, plus the widgets and the Apple Watch app. Kata will also open in your browser on any computer, on the same account and the same data. iPhone, Android and the web are all coming soon.

How do I get Kata on my phone?

Not yet, and we will not pretend otherwise. The App Store version, the Google Play version and the web app are all built and all coming soon. Join the waitlist and we will tell you the moment yours lands. Step-by-step help lives in the docs.

How do I back up my data?

Three ways, and they stack. Signed in, Kata keeps one restore snapshot of your account, sealed on your device before it goes: into your own private iCloud on iPhone, into one row in our database on Android and web. Sign in on a new phone in the same ecosystem and the key travels with your Apple or Google account, so Kata offers your history straight back. In a new browser, or crossing from iPhone to Android, your recovery code is what opens it, so keep it somewhere safe. Your Kata data also rides along in the normal encrypted device backup of your iPhone or Android. And the built-in JSON export gives you one complete file any time, to keep wherever you like.

Which devices and browsers work?

Kata is built for iPhone and Android, and for any computer in Chrome, Safari, Edge or Firefox. All three are coming soon. Switching to a new phone is one step: sign in, and Kata offers your encrypted snapshot back. What that is not is live sync. Your data lives on the device you are using, the snapshot refreshes at most every few hours, and two devices used side by side will not merge. Proper sync is on the roadmap and will be announced honestly.

All questions

Try them all.

Free during the launch phase, every function included, set up in one conversation. It grows by invitation too: 3 Months of Kata AI for every friend who joins, and 1 free Month for them.

Join the waitlist Read the product story