Plan. Train. Adapt.
trainerX is the AI personal trainer for iPhone. It writes every session around your goal, your gym and your week, sets the weights from what you actually lifted last time, and rewrites the plan when life gets in the way.
7 days free · No card needed · iPhone
One plan for the body you have now. Not the one you had at 25.
Your first session is written before you get there.
Download it, answer a few questions about your goal, your days and what you're working around, and the plan is ready. From then on, it changes as you do.
Tell it about you
Your goal, the days you can train, how long you've got, your equipment, and anything you're working around. About two minutes, in the app.
Get your plan
Every session written for you: the exercises, the pairings, the sets and reps, and a suggested weight for every set. Nothing to design.
Log a set. The plan updates.
Enter what you lifted and how hard it felt. The next session moves up when you're flying and backs off when you need the recovery.
Log a set.
The plan updates.
Enter your weights, reps and how hard it felt. TrainerX reads all of it and adjusts the next session — heavier when you're flying, lighter when you need the recovery. You never have to think about programming again.
Every part of the app.
Your plan, your sessions, your coach, your numbers. Swipe through what TrainerX actually does, screen by screen.
Just ask.
Tell it what hurts, what you skipped, what you'd rather do. The plan changes, not your excuses.
At a glance.
Where you are in the phase, what's next, and what you've already banked this week.
Your story.
Every lift tracked over time — estimated 1RM, weekly volume and where the trend is actually heading.
Every set.
A keypad built for chalky hands mid-session. Weight, reps, RPE — three taps and you're back under the bar.
Built like a real trainer.
Yours from day one.
Not a template with your name on it. Your goals, your equipment, your schedule, your history — the plan is generated against all of it before you train once.
Changes as you do.
Every logged set feeds back. Load, volume and exercise selection move with your actual performance instead of a fixed 8-week block.
Real training science.
Progressive overload, managed volume, planned deloads. The principles serious lifters use, applied without you having to run the spreadsheet.
Smart training.
Sensible price.
Start free. Cancel any time. No lock-in.
- Full setup: goal, days, equipment, injuries
- One complete AI-built workout
- In-session coaching & set logging
- Unlimited personalised plans
- Adaptive progression every session
- Unlimited AI coaching & chat
- Progress analytics & body tracking
- Weekly summaries & milestones
- Cancel any time
No card needed to start
- Fixed session times only
- No guidance between sessions
- No automatic plan adaptation
- £60–100 per session
People who got tired of guessing.
"I've tried every fitness app going. TrainerX is the first one that actually adapts to me — I had a rough week and it lightened the load on its own. That's never happened before."
"I cancelled my PT after the first month. I'm getting better programming, I train when I want, and I'm paying about 95% less. No brainer."
"Forty-six, two dodgy knees, hadn't trained properly in eight years. It built around the knees instead of pretending they weren't there. Three months in and I'm hooked."
Questions, answered.
Most apps hand you a static programme — the same plan for every user, unchanged for eight weeks. TrainerX generates a plan around your specific goals, equipment and schedule from day one, then adapts it after every single session based on what you actually lifted. It behaves far more like a trainer than an app.
No. When you set up the app you say exactly what you have access to — a full gym, a pair of dumbbells in the spare room, or nothing but bodyweight. The plan is built around what you've actually got.
Yes — it's one of the things the app asks about when you set it up. TrainerX substitutes exercises that load the same pattern through a friendlier range, and you can flag a flare-up mid-plan at any time. The programme reshapes around it rather than telling you to push through.
After each session you log sets, weights and RPE. TrainerX reads how you're responding: handling the load easily means intensity goes up; a hard week means it backs off. Over time it also adjusts total volume, exercise selection and when to schedule a deload.
After 7 days your subscription starts at £19.99/month. You're reminded before the trial ends, so there are no surprises. Cancel before then and you're not charged anything — it takes about thirty seconds in your App Store settings.
Yes. No minimum term, no cancellation fee, no retention maze. Cancel from your iOS subscription settings whenever you like and keep access until the end of the billing period.
Your first session is already written.
Download trainerX, answer a few questions, and walk into the gym with a plan built for your body, your gym and your week. 7 days free, no card needed.
7 days free · iPhone