PUMPZZ: Gym Workout Tracker

RepStack turns your lifting into one number — a Strength Score from 0 to 999 — and tells you exactly what to lift today. Exact weight. Exact reps. Log the set, and the next target is already picked.

No spreadsheet math. No "add weight or add reps?" debate between sets. You show up, hit the targets, and watch the number climb from Foundation to Elite.

PHYSIQUE SCORE

Your physique gets a number too. Take one photo and get a 0–999 Physique Score: every visible muscle group graded, with notes pinned right on your photo showing what's developed, what's lagging, and what to train to fix it. Add back and side poses for the full analysis, rescan later, and watch the score move. Photos are stored only on your device — scans are processed securely and never saved on our servers.

PROGRAM LIBRARY

Start a proven program in two taps: Wendler 5/3/1, nSuns, GZCLP, 5x5, Reddit PPL, PHUL, PHAT-style, upper/lower, full body, and more. Percentage-based programs set up your training maxes for you and handle week-to-week progression automatically — no percentage math between sets.

WHY LIFTERS USE REPSTACK

Know your next weight and rep target before every set
Adapt when the gym is busy: swap days, replace exercises, edit sets and reps — for today or for every week
Log real strength training: warmups, working sets, AMRAPs, drop sets, failure sets, RPE, RIR, and rest times
Import your own program from text, XLSX, or CSV instead of rebuilding it by hand
Load barbells faster with the plate calculator in kg or lbs
Search 873 exercises with images, muscle filters, and offline access
See PRs, e1RM trends, volume, Workout Rewind, and What-If Projections
BUILT FOR THE GYM

RepStack works offline and does not require an account. Your log stays available when the gym Wi-Fi is bad, your program changes, or you just want to start lifting.

FREE

Unlimited workout logging, 873 exercises, custom routines, free Program Library programs, rest timer, plate calculator, 30-day history, personal records, and your first full Physique Score analysis.

REPSTACK PRO

Unlock exact progressive-overload targets, Strength Score, Physique Score rescans and comparisons, the full Program Library, What-If Projections, Workout Rewind, full history, program import, iCloud sync, shareable progress cards, Live Activity, and advanced progress charts.

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