AI personal trainerAndroid beta
Just talk.Kai doesthe logging.
Kai is the AI personal trainer you talk to. Say your sets, meals and water out loud, snap your plate for calories and macros, and let your watch fill in what you burn. Kai plans your training and coaches your next set. No forms, no typing between sets.
- SpeakSets, meals, water
- SnapPlate or barcode
- SyncYour watch, automatic
Tap an object to morph the orb · hover or drag the orb to hold and turn it
Say it like you’d say itto your spotter.
- “Bench 80 for 8”
- “Same again”
- “Rest 2 minutes”
- “Chicken adobo with two cups of rice”
- “I weigh 55 today”
- “Drank a bottle of water”
- “Start push day”
- “Make that one cup”
- “What’s left for today?”
- “Squats, 100 kilos, walo reps”
- “How was my week?”
- “Undo that”
- “What should I lift next set?”
- “Two eggs and toast for breakfast”
- “Show my weight trend”
- “Finish the workout”
Voice first
Your voice is thewhole interface.
Tap the mic, or hold it to scan a meal. Kai listens, logs, answers out loud, and shows you a card for everything it did.
- 01
Log a set without breaking your rhythm
Common gym phrases are understood right on the phone, so the set is in before you rack the bar. Everything else goes to Kai’s AI, which knows your workout in progress: “same again” just works.
- “Bench 80 for 8”
- “Same again”
- “Rest 2 minutes”
Bench 80 for 8Set 3 logged. Same weight next set?Bench press80 kgWeight8Reps3SetRest 2 minutesRest 2:00+30sSkip - 02
Describe meals the way you’d tell a friend
Kai breaks a meal into items and estimates portions, calories and macros for each, Filipino favorites included. Talk in English or Taglish.
- “Chicken adobo with two cups of rice”
- “Two eggs and toast”
- “A large iced latte”
Chicken adobo with two cups of rice and a boiled eggLogged 838 kcal for lunch. You have 1,062 left today.Lunch838 kcal- Chicken adobo1 cup350
- White rice2 cups410
- Boiled egg1 large78
Protein 45 gCarbs 95 gFat 28 g - 03
Fix anything by just saying so
Corrections are part of the conversation. Change a portion, fix the last set, or undo whatever Kai just did. No digging through history to edit a row.
- “Actually it was one cup”
- “Make that 85 kilos”
- “Undo that”
Actually, it was one cup of riceDone. Rice is now 1 cup, and lunch is 633 kcal.White rice → 1 cup · −205 kcalUndo thatRice change undone - 04
Ask about your progress, out loud
Kai answers from your own logs: weekly volume, calories against your target, weight trend, best lifts. Ask a follow-up and it keeps the thread.
- “How was my week?”
- “What’s left for today?”
- “Show my weight trend”
How was my week?5 workouts and 41,600 kg moved. Volume is up 12% on last week. Legs got one session; maybe add another?Training volume
- Chicken adobo1 cup350
- White rice2 cups410
- Boiled egg1 large78
AI photo scan
Snap your plate.Done.
No barcode hunting, no searching a database for “adobo, home-style”. One photo and Kai logs the whole meal.
Tap the camera, or hold the mic
Point at your plate. Kai finds each item and estimates the portion.
Calories and macros per item
Protein, carbs, fat and fiber for every part of the meal, added to today in one go.
Correct it out loud
“That was one cup of rice.” The meal updates and your totals follow.
Photo calories are estimates. Kai shows every item so you can see what it counted.
Galaxy Watch · Health Connect
Your watch already knows.Now Kai does too.
Your Galaxy Watch syncs to Samsung Health, Samsung Health shares with Health Connect, and Kai reads it once you say yes. What you burn lands in today’s calorie budget on its own.
- Calories burned486 kcal
- Steps8,412
- Distance6.1 km
- Heart rate128 bpm
- Resting heart rate58 bpm
- Heart rate variability42 ms
- WorkoutsStrength · 52 min
- Sleep7 h 12 m
- Weight68.4 kg
- And back the other wayMeals you log in Kai are written to Health Connect as nutrition, so other health apps see them too.
Health Connect is built into Android 14 and later, and a free Google Play download on older versions. Other watches work too, as long as their app syncs to Health Connect.
AI coach
A coach that remembersevery rep.
Everything you say becomes data Kai can coach from: what to lift next, what is left to eat, how the week went, and when you have earned a new record.
Progressive overload, handled
Kai keeps your history for every lift and suggests the next set from how the last sessions went. Ask “what should I lift?” any time.
Bench presse1RM 101 kg- Oct 680×8 · 80×8 · 80×8
- Oct 280×8 · 80×8 · 80×7
- Sep 2877.5×8 · 77.5×8 · 77.5×8
Next time82.5 kg × 88 clean reps two sessions running. Add 2.5 kg.What’s left today
Calories and macros against your target, live as you log.
- Calories1,062 left
- Protein62 g to go
- Carbs131 g to go
Rest timer by voice
“Rest two minutes” starts a countdown that floats above every screen, with +30s and Skip one tap away.
2:00A plan from one conversation
Tell Kai your age, height, weight and goal. It sets calories, macros and water, and updates them when things change.
Your daily plan2,150Calories130 gProtein245 gCarbs70 gFatTrends that tell the truth
Weight, volume and calories over weeks, so one bad day stays one bad day.
68.4 kg −2.8 kg in 8 weeksRecords, noticed
Beat your best estimated one-rep max and Kai calls it out.
Back squatNew PR120 kgWeight5Reps2Set140 kge1RMSpeaks the way you do
English or Taglish, kilos or pounds, numbers in words or digits. Kai works out what you meant.
English (US)English (Philippines)Filipino / Taglish“Squats, 100 kilos, walo reps”→Back squat · 100 kg × 8
Make it yours
Your color. Your face.Your Kai.
Twelve accent lights recolor everything, from the buttons to the orb to the room behind the glass. Pick one below: this page follows along, just like the app.
Kai morphs on its own when idle. Pick a shape to hold it.
App color
VoltAvatar
32 presets, or build your ownGetting started
Up and lifting in a minute.
- 01
Sign in with Google
One tap. No new password to remember.
- 02
Talk through a one-minute setup
Kai asks your name, age, height, weight, goal and how often you train, then builds your daily targets.
- 03
Train, eat, talk
Log by voice or photo, connect your watch when you are ready, and ask Kai anything along the way.
Privacy
Your body.Your data.
Health data is personal. Kai only reads what you allow, keeps it to your account, and lets you take it all back.
You choose what syncs
Health Connect asks you for each kind of data, and you can turn any of it off at any time.
Private by default
Your logs and meal photos are only readable by your account.
Delete it all in one tap
Workouts, meals, photos and your plan are permanently removed from Settings, whenever you want.
Guidance, not diagnosis
Kai gives fitness and nutrition guidance, not medical advice. AI estimates can be wrong, and fixing one takes a sentence.
FAQ
Good questions.
What is Kai?
Kai is an AI personal trainer and calorie tracker you talk to. Say your sets, meals and water, snap your plate, and Kai logs it, builds your training plan, and coaches your next session using your own numbers and your watch data.
Can Kai make me a workout plan?
Yes. Tell Kai your goal, how many days you can train and what equipment you have, and it builds a weekly plan, shows how each exercise is done with the muscles it works, and suggests the weight for your next set.
Is Kai free?
Yes, during the Android beta. Request a beta key on the download page and you’ll get your personal key by email.
Which phones does Kai work on?
Kai is built for Android first. An iPhone version isn’t available yet.
Do I need a smartwatch?
No. Voice and photo logging work on their own. A watch adds the calories you burn, your steps, heart rate, sleep and workouts automatically.
Which watches work?
Galaxy Watch through Samsung Health, and any other watch whose companion app syncs to Health Connect. Kai finds a paired watch and tells you which app to connect.
How accurate are photo calories?
They are estimates, like any photo-based tracker. Kai lists every item and portion it counted, so you can see its working, and you can correct anything by voice: “that was one cup of rice.”
Can I talk to it in Taglish?
Yes. Pick English (US), English (Philippines) or Filipino / Taglish for speech recognition. Numbers in Filipino, like “walo reps”, work too.
What if I would rather type?
Kai’s chat has a text box too. Typing goes through the same AI, so “bench 80 for 8” works either way.
Can I delete my data?
Yes. Settings → Delete my Kai data permanently removes your workouts, meals, photos and plan.
Get Kai
Your next set isa sentence away.
The Android beta is free and invite-only while we tune it. Ask for a key below; it comes by email with your download link.
Signed by Kai. Your key unlocks the download on the next page.