Paste your logged lift numbers (date, exercise, weight, reps) and see which lifts have actually stalled, from a rolling-regression slope, not vibes.
Plateau is a plateau detector for people who lift and log their training. You paste the numbers you already keep in a spreadsheet or notes app (date, exercise, weight, reps) and it tells you which lifts have genuinely stalled and which are still moving. The point is to replace a guess with a test. Comparing this week's top set to last week's is a single noisy sample: sleep, stress, bar speed, and rep quality push your estimated one-rep max around enough that one comparison produces both false alarms and false comfort.
Instead, Plateau converts each session to an estimated one-rep max (Epley formula), fits a rolling linear regression over each exercise's recent history, and checks whether the slope is statistically distinguishable from zero at 90% confidence. If zero sits inside that confidence interval, the lift is flat within its own noise and gets flagged as plateaued, with a count of how many weeks the flat window spans. If the interval clears zero, the lift is trending up or down. Lifts with fewer than four logged sessions are marked insufficient data rather than guessed at.
date, exercise, weight, reps. Commas
or tabs both work, and a header row is fine.YYYY-MM-DD or MM/DD/YYYY. Rows that don't parse are skipped and
reported, so a couple of typos won't block the rest of your log.