Free, open source, no ads

Know what to lift today. Log it in seconds.

A workout log for people who lift. It fills in last time’s weights, tells you when to add more, and has a coach that knows your history. Your data stays yours.

Start trainingStart trainingTry it without signing upTry it without signing up

Start as a guest, with no email and no password. Sign up later to keep your workouts on every device.

Build me a 3-day program

A few quick questions, so the program fits you:

What’s your main goal?

Where do you train?

Try it: pick your answers and send them.

Coach

A coach that knows your training.

Ask why your bench press stalled, what to train today or how last week went. The coach answers from your own workouts, in your language.

Finds out why a lift has stalled
Builds a program around your goal and equipment
Changes nothing until you approve it
Remembers your goals and injuries until you ask it to forget

Pick your coach: 17 characters, each with its own way of talking.

The coach can be wrong. For pain or injury, see a professional.

The coach runs on credit, and every account starts with some. The rest of the app is free.

What you can ask

Explains a stalled lift

Why has my bench press stalled?

Checking how hard you trained

Drawing a chart

Finds what you skip

Am I training my back enough?

Checking muscle balance

Comparing your main lifts

Picks today’s workout

What should I train today?

Checking recovery

Checking today’s plan

Edits your routines

Swap barbell rows for pull-ups in Pull

Reading your routines

Preparing a change

Logs it for you

Log squats: 3 × 8 at 100 kg. I weigh 82.4 kg today.

Logging sets

Logging body weight

Remembers what matters

My left shoulder hurts on overhead presses.

Saving that for later

Searching exercises

Features

Made for the minute between sets.

Each screen answers one of two questions: what should I lift next, and is it working?

Routines ready on any day

Save a ready-made program or build your own routines. Start any of them on any day; the folder shows which one comes next.

Push5 exercises

Pull5 exercises · Next

Legs5 exercises

Log a set in one tap

Last time’s weight and reps are filled in. Tick the set and the rest timer starts.

PreviouskgReps

180 kg × 682.56

280 kg × 6856

380 kg × 6856

Tick a set to start the rest timer.

Knows when to add weight

Choose a progression for a routine or a single exercise: linear, double, Greyskull LP or time. When a target changes, gymgym says why.

Barbell Bench Press82.5 kg80 kg × 6

Every rep last time — 2.5 kg more.

Barbell Seated Overhead Press40 kg40 kg × 4

Missed reps last time — same weight.

See which muscles you’ve trained

Balance shows how your sets are spread across your muscles, Fatigue what is still recovering, and Strength what you haven’t trained for a while.

FrontBack

5,632 exercises

Filter by the equipment you have, with names in 17 languages. Add your own exercises, with a photo.

Dumbbell Bench PressChest · Dumbbell

Dumbbell Goblet SquatUpper legs · Dumbbell

Dumbbell Bent Over RowBack · Dumbbell

Body weight, without the daily noise

Weekly averages show the real trend, and a goal line shows how far there is to go.

82.580.578.5

Goal 79

Jul 31Oct 23

Six months at a glance

Every workout from the last six months, shaded by time or volume.

MayJunJulAugSepOct

LessMore

Also included

Supersets

Two exercises back to back, then rest.

Warm-ups and drop sets

Logged, but kept out of your records.

Plate calculator

Which plates to load, from the ones you own.

Works offline

Log sets with no signal; they sync later.

Import your history

From Strong, Hevy, FitNotes or Apple Health.

In your language

Including Arabic, right to left.

Workout reminders

Optional, on the days you choose.

Passkeys

App

Phone, tablet or computer.

The same four tabs on your phone and your computer. Install it from the browser, no app store needed.

Profile

AI assistants

Or bring your own assistant.

The coach is built in. If you already use Claude, ChatGPT or another assistant that supports MCP, connect it instead: it can build a routine, log a workout or review your progress, and it sees only the account you allow.

Connect an assistant

https://app.gymgym.club/mcp

Add this address to your assistant.
Sign in and choose the account it may use.
Choose Allow.

Works with Claude, ChatGPT, Claude Code and Codex. Developers can also use the gymgym command line.

Compare

How gymgym compares with Strong and Hevy.

Strong and Hevy are good apps. Here is how gymgym differs, based on their own pricing and help pages.

gymgymStrongHevy

Price

gymgymFree, no ads

StrongFree plan, paid upgrade

HevyFree plan, paid upgrade

Routines on the free plan

gymgymNo limit

Strong3

Hevy4

Charts and history on the free plan

gymgymAll of it

StrongSome charts, the rest paid

HevyGraphs for 3 months

Source code

gymgymOpen source, AGPL-3.0

StrongClosed source

HevyClosed source

Host it yourself

gymgymYes, on Cloudflare

StrongNo

HevyNo

A coach that builds your program

gymgymA chat; you approve every change

StrongNo

HevyA program builder, paid

Phone and watch apps

gymgymA web app you install from the browser; Android, iOS and watch apps are planned

StrongiPhone, Android, Apple Watch

HevyiPhone, Android, Apple Watch, Wear OS

Social feed and leaderboards

gymgymNo

StrongNo

HevyYes

Checked in October 2026 against each app’s public pricing and help pages. Plans change: if something here is out of date, open an issue on GitHub and we will fix it.

Questions

What people ask first.

Is gymgym really free?

Yes. There are no ads and no paid plan, and nothing is held back: routines, exercises, history and charts are all included.

Does the coach cost anything?

Every account starts with a small credit, and each answer shows what it cost. Topping up is not available yet. On a copy you host yourself, answers are billed to your own OpenRouter key.

Is there an iPhone or Android app?

Not in the app stores yet. gymgym is a web app: open it on your phone, add it to the home screen, and it works like an app. Native apps for iPhone, Android and watches are planned.

Does it work offline?

Yes. Sets you log with no signal are kept on your device and sync when you are back online.

Can I bring my history from another app?

Yes. Import it from Strong, Hevy, FitNotes or Apple Health in Settings.

What can the coach see and change?

It reads your workouts, routines and the notes you ask it to keep, and sends them with your message to a model provider (OpenRouter) to write an answer. It proposes changes as a card and changes nothing until you tap Apply. Before it deletes anything, it asks.

Can I host it myself?

Yes. It runs on your own Cloudflare account, for you, your clients or your gym. The self-hosting guide has every step. You pay only Cloudflare for hosting.

Can I take my data and leave?

Yes. Export everything as one JSON file whenever you like, or delete your account in Settings.

Get started

Use our app, or host your own.

It’s the same app either way. Most people open app.gymgym.club; trainers and clubs can run their own copy on Cloudflare.

app.gymgym.club

Free. Start as a guest and keep your workouts when you sign up.

Syncs across your devices
Installs on phones and computers
Logs sets offline in the gym
Export everything, any time

Start training

Host your own

On your own Cloudflare account, for you, your clients or your gym.

One command builds and deploys it
Invite-only or open sign-ups
An admin page to manage users
Your data in your own database

Self-hosting guide

Open source

Open source, and it stays that way.

The code, the design and the exercise data are public under the AGPL-⁠3.0 licence. Run your own copy for free.

Licence

AGPL-3.0

Exercises

5,632

Languages

Ads

gymgym on GitHub How to contribute