The API that gives you strength scores, level progression, percentile rankings and more. One endpoint, no data stored, no setup overhead.
Works with any HTTP client. No SDK required.
From raw workout data to gamification metadata in a single POST request.
POST the exercise name, an array of sets with reps and weight and optionally, for more precise statistics, the athlete gender and age.
We estimate the 1-rep max, map it to established strength standards, and compute a population percentile.
Receive a structured JSON response with strength score, level, percentile, progress fraction, and the exact gap to the next level — ready to render.
One endpoint. All the data your app needs to turn reps into progress.
Estimates your one-rep max from any set using the Epley formula, taking the best across all sets.
Maps estimated 1RM to progression levels — novice, beginner, intermediate, advanced, elite — based on established strength standards.
Tells users exactly where they stand among the general lifting population — a number that makes progress tangible.
No accounts, no database, no sessions. Every request is self-contained — ideal for privacy-first apps or edge deployments.
Returns exact gap to the next level in terms of weight and percentage, giving users a concrete goal to chase — not just a label.
Clean JSON, typed response shapes. Drop it into your stack with a single fetch call.
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