CurveFit — learn your strength curve
CurveFit is a local-first weightlifting tracker. It fits a personal strength curve from the sets you log and suggests the right weight for your next set, using Reps in Reserve (RIR) and a bounded power-curve model derived from established sports-science literature.
This site requires JavaScript to run. With JavaScript enabled you can read the full methodology on the home page, browse the FAQ, or learn more on the about page. Privacy details are on the privacy page and the terms of use are on the terms page.