An AI personal trainer
built by a real one.
PTrAIn combines 8 years of real coaching experience at Gymbox London with AI — giving you a complete personalised programme, nutrition plan and coach on call, for less than 10 minutes with a human PT costs.
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First week's programme & nutrition plan free · No card needed · 60 seconds
What makes a good
AI personal trainer?
Anyone can ask an AI for a workout. The difference is whether the answer follows real coaching principles. PTrAIn was built by a certified PT, and every programme it generates follows the same structure used with real paying clients:
- Progressive overload — weights and volume that build week on week
- Proper exercise selection and order for your goal
- Recovery built in — not just maximum volume every day
- Nutrition matched to your training, not generic macros
- Plans that adapt based on what you actually lifted last time
It remembers.
It adapts.
PTrAIn tracks every session you log — weights, reps, personal bests, how hard it felt. Your next programme is built on that data. Too easy? It progresses you faster. Struggled? It adjusts. That's what a real PT does, and it's what most fitness apps completely miss.
The AI coach is available 24/7 for questions about form, nutrition, recovery or motivation — with answers grounded in real coaching experience, not generic internet advice.
Common questions
How much does an AI personal trainer cost?
PTrAIn starts free — your first week's programme and nutrition plan cost nothing. Pro is £6.99/month for unlimited plans, tracking and the AI coach. A human PT in London costs £60-100 per session.
Can an AI replace a personal trainer?
For programming, nutrition guidance and progress tracking — genuinely yes, for a fraction of the cost. For hands-on form correction and in-person motivation, real PTs still matter. PTrAIn handles everything between sessions.
What training styles does it cover?
Gym and weights, CrossFit, Hyrox, calisthenics, sport-specific (boxing, football, anything), yoga and mobility, endurance and HIIT.
Does it work for beginners?
Especially well. Beginners get clear, safe, structured programmes with exercise demos — no guesswork about what to do in the gym.