Frequently asked questions

FitSI is an AI training coach that works in Telegram. It keeps your goal, restrictions, current level, equipment and workout history in one profile and uses them to plan your week and each workout.

Telegram works on Android, iPhone and desktop, and most people already have it open. The chat is used for questions and quick reports; a Telegram Mini App shows the profile, plan, workout cards and timer.

Not yet. FitSI is in development and the first pilot is small and by invitation. You can leave a request on the home page; requests are reviewed by hand and do not give automatic access.

There is no public date. The first four-week pilot runs with the founder; invitations to other testers follow after that pilot is evaluated.

Pricing has not been decided. The pilot does not take payments.

The site is in English, Russian and Polish. The coach answers in the language set in your profile; the coach languages for the pilot will be confirmed before it starts.

Strength training with bodyweight, resistance bands, dumbbells, kettlebells or gym equipment; running and other cardio; HIIT and Tabata-style intervals; warm-ups, stretching and mobility. Goals can be a first 5 km, ten pull-ups or simply training three times a week.

Yes. A band is equipment like any other: you add it to your profile with its colour or stated resistance, and workouts use only what you confirmed.

Yes. Every workout starts with a warm-up matched to the main part. Stretching or mobility can close the session or be a short session on its own, counted as a light day.

Yes, that is one of the main pilot scenarios. Plans for beginners can alternate walking and running and progress based on how recent runs felt, not on a fixed calendar.

FitSI moves or adjusts the following sessions so the week still serves its goal, and explains the change. Past sessions are never rewritten; plan versions are kept.

Yes. A request like “20 minutes, a band and a mat” produces a session that uses your profile and restrictions. On a planned training day it replaces the planned session by default.

No. Tabata format describes the timing (for example 20 seconds of work and 10 seconds of rest). Intensity is set by your level, recovery and restrictions.

No. FitSI gives general training guidance. It does not diagnose, treat or interpret lab results. If you have a condition, pain or doubts, talk to a doctor before changing your training.

You describe them during onboarding. Each is stored with a date and source and checked against every workout. If a restriction is unclear, FitSI asks before giving a personal workout.

A request for more intensity does not cancel a restriction. FitSI offers a compatible alternative; changing the restriction itself is a separate conversation about what changed and since when.

FitSI does not raise the load, suggests stopping a potentially unsuitable exercise and recommends a professional assessment when appropriate.

No. Without device data FitSI asks a short check-in about sleep, fatigue and pain. Data from a device helps, but is not required.

Not yet. Official Garmin access requires an approved application to the Garmin Connect Developer Program. Until then you can send a screenshot of the workout summary.

Polar AccessLink is being tested. A Polar H10 chest strap records workouts; it is not used as a source of sleep data.

Profile and training data are stored in FitSI’s own database with per-user isolation. Messages pass through Telegram and the selected AI provider; only the context needed for a request is sent to the model.

Export and deletion of personal data will be available before the pilot is extended beyond the first users. Waitlist requests can be deleted on request; see the privacy page.