THE GYM APP THAT
THINKS FOR YOU

Log your sets. RepStack handles progressive overload, detects PRs, and coaches you through every session — automatically.

Download for iOS
873 exercises · 5 programs · Works offline

Features

Everything You Need to Progress

AI Coach

Automatic progressive overload suggestions for every exercise, every session.

Strength Score

A single 0-999 score measuring your total strength across 5 compound lifts.

What-If Projections

See when you'll hit milestones based on research-backed progression models.

Program Import

Paste text or upload XLSX. AI parses exercises, sets, reps, and RIR instantly.

PR Detection

Every personal record caught and celebrated — e1RM, max weight, max reps, volume.

Offline First

SQLite on device. Works without internet, syncs via iCloud when connected.

Exercise Database

Browse 873 Exercises by Muscle

Step-by-step form guides, images, and muscle group data for every exercise in RepStack.

Quadriceps 148 exercises Shoulders 127 exercises Abdominals 93 exercises Chest 84 exercises Hamstrings 79 exercises Triceps 71 exercises Biceps 53 exercises Lats 38 exercises Middle Back 34 exercises
All muscle groups → | Full exercise database →

Available on the App Store

Free to download. AI coaching, strength scoring, and PR detection — all on your device.

Download for iOS