Answer a few questions
Goal, experience, days a week, session length and the equipment you have, then a few follow-ups from the AI. It builds a full program from the exercise library.
Gym Book Pro · free for nowYour plan, changed
Your plan, changed
in one sentence.
Tell the AI coach you've only got 40 minutes, the barbells are taken or you want bigger arms. It changes the plan, and every week it reviews how training went.
iPhone·Android·Wear OS·Mac·Windows
How it works
A coach that knows your training.
Ask for changes
Swap exercises, shorten a day, add a muscle group or work around an injury - in plain words.
Get weekly reviews
The coach looks at your logged workouts and tells you what's working and what to change.
AI-built plans
Made for your goal, schedule and equipment, with progression built in.
Import any plan
Paste text, share a link, snap a photo or open a PDF, and it becomes a plan you can log.
Chat to change it
Ask in plain words and the plan is updated straight away, and the coach tells you what it changed.
Workout reviews
After each workout and each week: what went well, what to fix and what to try next.
Food estimates
Describe a meal or take a photo of it and get its calories and macros.
Plan with AI
Turn on calendar booking and AI fits your workouts into the free time in your calendar.
Physique check
Take a photo or three and AI estimates your body fat, what changed since last time and what to work on.
Still free without Pro
Everything else stays free.
Logging, signature programs, recovery, progress, nutrition and sync never need a subscription. The AI features are free for everyone for now, too.
Pricing
Free to train. Pro for AI.
Everything you need to plan, log and track is free, with no ads. Gym Book Pro adds the AI features.
Gym Book
Free forever
- Unlimited workouts, plans and history
- 20+ signature programs and 850+ exercises
- Muscle recovery, progress, records and ranks
- Food log, macros and goal weight (barcode scan on Android)
- Sync across phone, watch, Mac and PC
- Friends, feed and challenges
Gym Book Pro
Free for everyone, for now
- Everything in Gym Book, plus:
- AI plans built for your goal, schedule and equipment
- Import any plan from text, a link, a photo or a PDF
- An AI coach to change your plan by chatting
- Weekly AI reviews of how your plan is going
- Estimate any meal with AI from a description or a photo
- AI coach reviews of your workouts and your eating
- Physique checks: body fat estimated from your photos
- Fill in an exercise's weights and reps with AI
The AI features are free for every account right now. If that changes, the app shows Gym Book Pro's price and asks before charging anything.
Try the AI coach
Download Gym Book: Gym Book Pro is free for everyone for now.
FAQ
Questions, answered
How do the AI features work?
When you ask for a plan, chat with the coach, import a plan, estimate a meal or check your physique, and for the weekly plan review and the coach's looks at your food and workouts, the details it needs (like your goal, experience and the plan) are sent to OpenAI to write the answer. Your name and email are never sent. See the privacy policy for exactly what each feature sends.
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.
Can I bring my data from another app?
Yes. Import your workout history from a Strong or Hevy CSV export, free. With Gym Book Pro you can also import any plan from text, a link, a photo or a PDF.
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.