Goal, plan, week after week
A personal AI coach who is always there
Your goal, their job: what to do today and what to build the workout from — a band and a mat, the gym or a hotel room. They remember your records, limits and everything you have already done.
Slept 5 hours. 25 minutes, a band and a mat.
Intervals move to Thursday. Today: easy strength and stretching.
- Warm-up5′
- Band strength, 3 rounds14′
- Hips and back stretch6′
25′
A day with your coach
A gym trainer sees you twice a week. Yours answers at 6 am and at 11 pm and remembers everything you told them.
My back hurts. What today?
No bends or jumps today. 20 minutes: mobility and light strength with the band.
Remembers: back, band at home
In a hotel, only a band with me
Built 25 minutes: band and bodyweight, no jumps.
Remembers: knee, no jumps
Done. Last round was hard.
Noted. Tomorrow is an easy day; intervals move to Thursday.
Noted: easier tomorrow
The name and tone are yours. Safety rules and health restrictions do not depend on the name.
What FitSI does
One coach that remembers everything about you and adapts the week instead of handing you a template.
You name a goal: run 5 km without stopping, do 10 pull-ups, or simply train three times a week and keep going. FitSI takes your free days, the gear at home and at the gym, what hurts and the watch on your wrist, and builds a plan around your real life.
Missed Tuesday? The plan survives
Intervals move to Thursday, the easy run stays on Wednesday, the week still lands on the same goal. FitSI tells you what moved and why.
Slept badly? Today gets lighter
Sleep, resting heart rate and HRV come from your watch. After a short night FitSI lowers the load and shifts the hard session. No watch? Two questions in the morning.
“I have 20 minutes, a band and a mat”
A full session for what is in reach. It counts toward the week in place of the planned one, not on top of it.
Your knee dislikes jumping? FitSI won’t forget
A restriction is stored as a dated fact. “Let’s go harder” doesn’t cancel it: you get a compatible swap instead of jumps.
One plan for everything
Strength, running, cardio, intervals, warm-up and stretching in one week. The load is counted as a whole, without overload.
All in Telegram
The bot asks, reminds and takes your report as text or a watch screenshot. The Mini App shows the week, the card and the timer.
- Strength
- Bands
- Running
- Cardio
- HIIT and VO2 max
- Warm-up
- Stretching
- Mobility
Bot and Mini App in Telegram
- Android
- iPhone
- Desktop
- Web
Missed Tuesday?The week moves, the goal stays
- MonStrength30′
- TueIntervals20′missed
- WedEasy run30′
- ThuIntervals20′moved from Tue
- FriStretching15′
- SatLong easy run45′
- SunRest
Intervals moved to Thursday: no two hard days in a row, and Saturday stays easy.
Your watch knows how you slept. FitSI knows what to do about it
Garmin, Polar, Apple Watch or an Android phone: every morning FitSI will pull sleep, overnight HRV, resting heart rate, Body Battery and the week’s load, and pick today’s workout for how you actually are, not for the calendar.
- GarminChecking access
- PolarChecking access
- Apple HealthPlanned later
- Health ConnectPlanned later
What FitSI will take into account
- Sleep
- HRV
- Resting HR
- Body BatteryGarmin
- Load
- VO2 max
For example
- Slept well, HRV in rangeIntervals as planned, full effort
- Short sleep, Body Battery 34Easy day, hard session moves to Thursday
- Goal: raise VO2 maxIntervals 4 × 4 min, progress by the watch estimate
Garmin and Polar come first; API access is being checked. Apple Health and Health Connect follow after the pilot. No watch? FitSI asks two questions about sleep and how you feel each morning and does the same job.
How FitSI works
- 1
Tell FitSI about yourself once
Goal and deadline, experience, free days, past injuries and what you can do now. Fill it in parts in the chat, fix it later in the Mini App. A three-year-old race time is stored apart from what you can do today.
- 2
Show your gear
As a list or a photo: home, gym, country house, a travel kit. FitSI suggests what it recognised; you confirm weights and band resistance. It never guesses from a picture whether that bar is safe to hang from.
- 3
Get your week
Not random workouts but a plan built from the goal: stages, weeks, sessions with warm-up, work blocks, rest, swaps and a cool-down. The card opens in the Mini App with the timer already set.
- 4
Train and report
Text, a watch screenshot, or automatically from a connected device. FitSI shows what it extracted; you correct it. One workout from two sources is never counted twice.
- 5
The week adapts
A missed day, a short night, pain, a trip, an extra gym session: the plan is rebuilt with an explanation, and you see what changed. Changing the goal or rebuilding the program happens only with your confirmation.
Week after week you just train, and FitSI takes the planning.
What is built, what is planned and what FitSI will not do: Full description of the service →
Questions about FitSI
Is FitSI available now?
Not yet. FitSI is in development. The first pilot is small and by invitation. You can request access with the form on this page; each request is reviewed by hand and does not give automatic access.
What kinds of training does FitSI plan?
Strength training with bodyweight, resistance bands, dumbbells, kettlebells or gym equipment; running and other cardio, including walk-run plans for beginners; HIIT and Tabata-style intervals; warm-ups, stretching and mobility. Goals such as ten pull-ups or a first 5 km are planned around your equipment.
Do I need a smartwatch or fitness tracker?
No. Without a device FitSI asks a few short questions about sleep, fatigue and pain before training. Garmin and Polar connections are being checked; until access is confirmed, FitSI works with manual reports and screenshots.
How does FitSI handle injuries and health restrictions?
You describe them in your own words during onboarding. FitSI stores them with a date and source and checks every workout against them. If a restriction is unclear, it asks before giving a personal workout. FitSI does not diagnose or treat.
Can an AI personal trainer replace a human coach?
In one way it is stronger: it is there at any hour, remembers your goal, restrictions, equipment and every past workout, and rebuilds the week after a missed day. It does not correct technique from video or make medical decisions; with an injury or competition prep a human coach is still needed.
Request access to the closed pilot
Leave your email and your goal. We review every request by hand and invite testers in small groups.