Gymex vs Fitness AI: Which Wins in 2026?
Fitness AI and Gymex both help you train — but they solve different problems. Fitness AI is ai generator; Gymex is a full AI strength coach. Here's an honest head-to-head on programming, coaching, price and who each one is really for.
Disclosure: Gymex publishes this comparison and appears in it. This is documentation-based research, not an independent review. Product claims were rechecked against official vendor pages on 20 October 2026; local prices can vary. See our editorial policy.
The short answer
Fitness AI suggests weights; Gymex coaches your whole training block. Gymex does more, for less, with a real free tier.
What is Fitness AI?
Fitness AI generates gym workouts using AI trained on lifter data, adjusting weights as you log. Its biggest strength is simple AI-generated gym workouts with automatic weight suggestions.
Side-by-side comparison
| Gymex | Fitness AI | |
|---|---|---|
| Category | AI strength coach | AI generator |
| Writes & adapts your program | Yes — adapts weekly | Suggestions |
| RIR autoregulation | Yes | No |
| Plateau & overtraining detection | Yes | No |
| Voice set logging | Yes | No |
| Nutrition tracking | Yes | No |
| Free tier | Yes | Trial |
| Price | Free, £7.49–£20/mo | Free trial–£13/mo |
| Platforms | iPhone, Android | iOS |
Where Fitness AI wins
Fitness AI is a straightforward way to get AI-picked weights each session. It's the right pick for people who want quick AI weight suggestions.
Where Gymex wins
Fitness AI mainly picks weights; Gymex writes and adapts full periodised blocks, coaches conversationally, reads RIR, logs by voice and tracks nutrition. That's the difference between an app that records or suggests training and one that actually programs and autoregulates it for you — for a fraction of the price of a human coach.
Bottom line: Fitness AI suggests weights; Gymex coaches your whole training block. Gymex does more, for less, with a real free tier. You can try Gymex free on iPhone or Android and decide for yourself.
Frequently asked questions
Is Gymex better than Fitness AI?
It depends on what you want. Fitness AI is best known for being ai generator — Fitness AI is a straightforward way to get AI-picked weights each session. Gymex is a full AI coach: Fitness AI mainly picks weights; Gymex writes and adapts full periodised blocks, coaches conversationally, reads RIR, logs by voice and tracks nutrition. For most lifters who want the app to program and adapt their training, Gymex does more.
Is Fitness AI or Gymex cheaper?
Fitness AI costs Free trial–£13/mo. Gymex is free to start; Core is £7.49/month without AI, Premium adds AI coaching at £15/month, and Pro Premium is £20/month. Store prices can vary by country.
Can Gymex replace Fitness AI?
For most people, yes. Fitness AI mainly picks weights; Gymex writes and adapts full periodised blocks, coaches conversationally, reads RIR, logs by voice and tracks nutrition. The main reason to keep Fitness AI is if you specifically need what it is best at: people who want quick AI weight suggestions.
What does Gymex do that Fitness AI doesn't?
Gymex writes and adapts multi-week programs, uses Reps in Reserve context to guide loads, detects plateaus and overtraining, logs sets by voice, and tracks nutrition on iPhone and Android. Fitness AI mainly picks weights; Gymex writes and adapts full periodised blocks, coaches conversationally, reads RIR, logs by voice and tracks nutrition.