How it works
Three steps, about a minute, every morning
How it works
Three steps, about a minute
Tell Reva how you feel
In your own words. Knee surgery six weeks ago, a little stiff in the morning. Back went out last week, sore but no shooting pain. There is nothing to configure and no plan to pick, because Reva reads what you wrote and tunes to it.
The more honest you are, the safer the session. If something is sharp, worsening, or worrying, say so, and Reva points you to a professional instead.
Get a safe, gentle session
A short session built for today, tuned to your level. Clear form cues on every movement, a soft caution on each one, and a red-flag safety check that runs before anything is built. It always starts gentle and progresses slowly.
Before any session, Reva screens what you described. Anything that needs a clinician stops the session and points you to care instead of programming around it.
Reva adjusts as you go
After each session you tell Reva how it felt, in one tap. Felt good and it adds a little next time. Sore and it eases off. Something hurt and it eases right back and suggests checking in with a professional. Recovery is not a straight line, and Reva does not pretend it is.
Adaptive progress is part of Plus and Care. On the free daily session, you get a fresh gentle session tuned to how you feel that morning.
In more depth
The four stages
The trustworthy part of Reva is not the model call. It is what happens either side of it.
- 01Reading your state
The model reads your words, not your diagnosis
You do not fill in a form or pick a condition from a list. You write what is going on in your own words, the way you would tell a friend. Something like 'knee surgery six weeks ago, pretty stiff in the morning but no sharp pain' is enough. Reva reads the plain language and tunes to it. The more honest you are, the safer the session. If something is sharp, worsening, or worrying, say so, and Reva stops and points you to care rather than building a session around it.
- 02The safety screen
Deterministic code, runs before any model call
Before any session is built, a fast keyword check runs on what you wrote. It looks for chest pain, trouble breathing, numbness, tingling, a joint giving way, a recent fall or fainting, dizziness, calf swelling or warmth, fever, an infected wound, and sharp or worsening pain. This check is code, not a model, so it cannot be argued around. If it finds a red flag, the session stops there and you are told to see a professional. A false stop costs you one session. A missed red flag costs more.
- 03Building the session
Five elements per movement, validated before you see it
A session has three to five movements, always in session order: an easy warm-up first, the main gentle work in the middle, a calm finish. Each movement gets a plain name, a one-line purpose, two to four coaching cues, a dose in time or reps, and one specific soft caution. The model is told to never program anything high-impact, loaded, end-range, or ballistic. The output is validated against a strict schema before you see it. If the model returns something that does not fit the shape, it is discarded.
- 04Adjusting from feedback
One tap, then Reva decides the delta
After each session you tap one of four options: that felt good, tiring but okay, a little sore, or something hurt. That felt good and the next session adds a little more range or time. Sore and it eases off. Something hurt and it eases right back and adds a note to check in with a professional. Adaptive progress is part of Plus and Care, because adapting across sessions requires keeping the history of how each one felt. The free plan gives a fresh gentle session each morning, tuned to how you feel that day.
Questions