A stronger, brighter you

Training that fits your whole life.

Walk, run, ride and lift in one progressive, science-backed plan.

Coming soon on the App StoreSee how it works ↓

You decide what to accept.

Kasvu's white walker, runner and cyclist, and blue lifter

WalkRunRideLift

Kasvu design concept with a morning summary, upcoming lift, Talk to Coach and training calendar
Design concept · illustrative data

How it works

Your data. Your own AI coach.
You stay in control.

1

Talk in your own AI app

Connect Kasvu to Claude or ChatGPT. Talk to Coach opens your chosen app, where you can discuss your training and ask for a change.

Context for the conversation

Your connected assistant can read your training data and use Kasvu's training guidance. Tell it what you want to work toward and what fits your schedule.

Connection instructions →
2

Review the proposal

A suggested activity or program arrives in Kasvu for your decision. Asking your AI for a plan does not activate it.

A day or a whole program

For an added activity, choose Add it or Not today. For a program, review its validation and changes against your current plan before choosing Accept & activate or Reject.

3

Train and see your progress

Start an accepted activity from Today or Plan. Record your session, then open its details to see what you completed.

Details that fit the activity

Log weights, sets and reps for lifting. Track time, distance and available heart-rate data for endurance sessions, with GPS routes for outdoor activities. Review your training in Progress.

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Progressive by design

Your plan builds from what you actually complete.

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Offline first

Your training remains available on your phone.

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Your plan stays yours

Your AI proposes. You decide what to accept.

Support

Train with the tools you have.

Kasvu works locally without an account. An account enables backup and sync; Circle and the AI connector require Kasvu Pro.

Compatible heart-rate straps
Polar H10 is the reference. Bluetooth straps that send beat-to-beat intervals can record heart rate; sensor quality affects HRV.
Your recovery baseline
Kasvu needs 5 mornings before showing a score and labels it calibrating until 14. Your plan stays unchanged during calibration.
Your data
Export or delete your data from the Me tab. Full details are in the Privacy Policy.