GainBook

Local-first strength training for iOS and Android.

Log sets, build workout templates, and review your training history — all stored on your device. No account required. No cloud sync. Your data stays yours.

A look inside

Swipe through the app.

Live workout: a superset of side lateral raises and rope triceps pushdowns, last workout's numbers above each exercise, and a bar with elapsed time, heart rate and rest countdown. — Log a workout live — supersets, rest timer and heart rate in one place.

A just-started Push workout opening on its check-in card: fatigue, sleep quality and shoulder pain rated before the first set. — Rate how you feel before you lift — pain, sleep, fatigue.

Templates screen: a Push Pull Legs plan with three scheduled workouts, the next one highlighted, and a Travel plan. — Plans and templates, scheduled by weekday, with the next workout marked.

Muscle recovery card: a front and back body map shaded by how rested each muscle is, with a per-muscle readiness list. — See which muscles are rested and ready to train again, and get a nudge when you are.

Session summary: sets, volume, duration and heart rate, a front and back muscle map lit by the work done, and each exercise's sets. — Every session broken down, down to where the volume landed on your body.

Progress analytics: workouts, volume, sets, average time, streak and best gain for the last twelve weeks, above a weekly training volume chart. — Progress over weeks and months — volume, streaks and your best gains.

Symptoms analytics: trends for shoulder pain, sleep quality and fatigue across recent sessions. — Track pain, sleep and fatigue next to your training.

Exercise detail for barbell bench press: demonstration photos, muscles worked and a muscle volume map for its history. — Nearly 900 exercises, each with photos, instructions and your own history.

History: a month calendar with trained days marked, a progress card, and this week's sessions. — Your training history as a calendar, one tap from any session.

Workout editor for Legs: weekday schedule, a muscle volume map of the plan, and each exercise's sets with last workout's numbers. — Build templates with warm-ups, supersets and per-set rest.

Get GainBook

Available now on Google Play and the App Store.

Android

GainBook is free on Google Play. Install it with your usual Google account — no tester signup required.

Get it onGoogle Play

iPhone

GainBook is free on the App Store. Install it with your usual Apple ID — no tester signup required.

Download on theApp Store