Pick your aim
Lose fat, maintain or build muscle, at a relaxed, steady or fast pace. Gym Book works out calories, protein, fat and carbs.
Calories · Macros · Goal weightEat for the body
Eat for the body
you're training for.
Gym Book sets your calories and macros from your aim, logs every meal in seconds and shows the day you'll reach your goal weight - right next to your workouts.
iPhone·Android·Wear OS·Mac·Windows
How it works
Set it once. Log in seconds.
Log what you eat
Search, log something you've had before in a tap, quick-add the numbers or, on Android, scan a barcode. Plan the rest of the day ahead and tick it off.
Watch the date
Your goal weight shows when you'll get there, and every day you log moves it sooner or later.
Barcode scanning
On Android, point the camera at the pack and the food's in, with its serving sizes.
Targets that keep up
The adaptive goal checks every week what you ate against how your weight moved and updates your calories, or set your own numbers.
Meals planned ahead
Put tomorrow's food in the day, see the totals with it, and mark each as eaten.
Supplement reminders
One tap per dose, and a reminder at the time you pick on the days each one is due.
Never run out
Enter how much you have and Gym Book counts it down, showing it's running low a week before it runs out.
AI estimates (Pro)
Describe a restaurant meal or take a photo of it, and AI fills in the calories and macros.
Training + food
One app for the gym and the kitchen.
Your workouts and your food live together, so the coach, your streaks and your trends see the whole picture. On Android, connect Health Connect or Samsung Health to bring in your burn.
Start tracking free
Free on Android, Wear OS, iPhone, iPad, Mac and Windows.
FAQ
Questions, answered
How do I log food?
Search the food database, pick something you've eaten before or type in calories and macros. On Android you can also scan a barcode. With Gym Book Pro you can describe a meal or take a photo of it and let AI estimate it. You can plan meals ahead and tick them off when you eat them.
How does it work out my calories?
From your height, age, sex and activity (or, on Android, the burn measured by Health Connect or Samsung Health), plus your aim: lose fat, maintain or build muscle, at a relaxed, steady or fast pace. It can check every week what you ate against how your weight moved and adjust the goal, or you can set your own numbers.
Is Gym Book free?
Yes. Logging, plans, recovery, progress, nutrition and sync are all free, with no ads. Gym Book Pro adds the AI features (AI plans, the AI coach, AI plan import, physique checks and AI food estimates from a description or a photo), free for everyone for now.
Do I need an account?
Yes, a free one: sign up with your email (or Google on Android, iPhone, iPad and Windows) when you first open the app. It backs up your training and syncs it between your devices. Everything is also kept on the device, so once you're signed in the app works without a connection.
Which devices does it run on?
Android phones, Wear OS watches, iPhone and iPad, Macs and Windows PCs. Your data syncs between all of them. The watch app can run a workout of its own or follow the one on your phone.