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.
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, £7.50–£20/mo | Free trial–£13/mo |
| Platforms | iOS, iPad, Android, Apple Watch | 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 iOS and decide for yourself.
Frequently asked questions
Is Gymex better than Fitness AI?
Fitness AI does one thing — suggests weights for each session — and does it simply. Gymex treats weight selection as one small part of coaching: it writes entire periodised blocks, adjusts from your RIR, answers questions, logs by voice and tracks nutrition.
Is Fitness AI or Gymex cheaper?
Fitness AI runs up to about £13/month after a free trial; Gymex is free to start with paid plans from £7.50/month. Gymex costs less at the entry tier while doing substantially more than suggesting loads.
Can Gymex replace Fitness AI?
Yes, comfortably. Everything Fitness AI does — picking sensible weights from your logs — Gymex does inside a full adaptive program with coaching, voice logging and nutrition. Gymex also runs on Android, whereas Fitness AI is iOS-only, so Gymex is the only option of the two if you're on an Android phone.
What does Gymex do that Fitness AI doesn't?
Gymex decides the whole session, week and block — exercise selection, volume, progression and deloads — rather than just the number on the bar. It also explains its reasoning in chat, detects plateaus, logs by voice and tracks nutrition, none of which Fitness AI attempts.