How me. decides what you do. Short version: a rules engine built on published research sets every number, and the AI only puts them into words.
A rules engine (plain code that gives the same answer every time, never a language model) sets every weight, rep, set, rest and progression step. It uses how hard your last sets felt (reps in reserve) to set your next weights, spots records with an estimated one-rep max, tracks day-to-day fatigue with a readiness model (a Kalman filter), keeps your weekly sets in research-based ranges, and sets calorie targets with the Mifflin-St Jeor equation.
A language model writes the engine’s decisions out in calm, plain words. It explains; it never decides or picks a weight.
Ask why your bench press is at 65 and it shows its reasoning: your recent sets, the step from last session, the range it keeps you in.
Import your history from the app you use now and it plans from your real numbers on day one. Export anytime. Delete your account and your training data goes with it. It only reads wearable data, except that it saves each finished session to Apple Health. Details in the privacy policy.
me. adapts exercise selection and estimates targets — it is not physical therapy, medical advice, or a diagnostic tool.
Read the medical disclaimer →