Your AI personal trainer · in your pocket
Train like you've got
a coach.
Pay like you don't.
It builds your plan, demonstrates every move, and watches your form as you lift — the things a good trainer does, without the £60 hourly rate or the 6am availability problem.
No card needed · cancel anytime · web & mobile
session.
Why Fit4Gains
A great coach costs a fortune.
A generic app costs your motivation.
Real personal trainers work — they program your sessions and keep you accountable. But they're never there at 6am, and you outgrow them. Most apps swing the other way: a one-size-fits-all PDF with a streak counter bolted on. Nobody's actually watching you lift. Fit4Gains does the parts that actually need a trainer present — programming the work, showing you the move, and checking your form — without you booking anything.
Personal trainer
Great feedback — but limited hours, never there at 6am.
All four jobs. One app.
Generic fitness app
A one-size-fits-all PDF with a streak counter. No feedback.
Everything in one place
Six systems that talk to each other.
Your training shapes your nutrition. Your form scores reshape your plan. Your progress unlocks your rewards. Each part feeds the next, so the app gets more useful the longer you use it.
A coach-grade program that rewrites itself as you improve.
Every move demonstrated by a 3D coach, any angle, any level.
Your camera watches every rep and corrects you live.
Deep analytics that don't just report — they re-plan.
Meals matched to today's training, logged by photo or voice.
Streaks, leagues and rewards that make showing up easier on the days you don't feel like it.
Pillar 01
A plan built around your goal, your kit, your week.
Tell Fit4Gains your goal, level, equipment and time. An AI trainer assembles a structured program from 5,000+ exercises — progressive overload, muscle-group rotation, periodization, planned deloads. Then it adapts after every session based on how you actually performed.
Programmed like a pro, not a playlist
4–12 week cycles, 3–6 sessions a week, session-by-session prescription, built-in rest and deload weeks.
It explains itself
Every plan comes with a plain-English rationale — why this exercise, this order, this rep range. You see the reasoning, not just the prescription.
Change anything, instantly
No equipment? Swap it. Shoulder tweaky? Sub it out. The AI re-balances the rest of the session around your change.
What can you train with?
Push / Pull / Legs. 4 weeks.
Hypertrophy block · 5 days / wk
You picked muscle gain + 5 days. Two push days, two pull days, one leg day — 12–18 sets per group per week, progressive overload, deload week 4.
It learns you · swap one move, the plan recalculates
Pillar 02
Never wonder “am I doing this right?” — watch it first.
Every exercise is demonstrated by a smooth, lifelike 3D coach — generated, not filmed. Perfect form, every angle, every variation, on demand. Your AI stitches the demos into one seamless guided session with coaching cues and rep counters.
A demo for every move, at every level
5,000+ exercises: setup, full-tempo execution, close-up form focus, correct-vs-incorrect, plus easier/harder progressions.
Multi-angle, slow-mo, on tempo
Multiple camera angles and tempo guides show exactly how fast to move down and up — the detail most apps skip.
The library only grows
Because demos are AI-rendered from a motion library, new exercises are added without a film crew — and you get them as soon as they ship.
Pillar 03
Prop up your phone. Get feedback on every rep.
Prop up your phone, and Fit4Gains uses computer vision to track 33+ points on your body in real time — counting reps, scoring form, and correcting you mid-set, out loud, before a bad rep becomes an injury.
A form score for every set
Movement quality graded on a clear scale, with a colored skeleton overlay so you can see what good (and bad) looks like as it happens.
Four kinds of cue
Preventive, corrective, motivational and safety cues — delivered as audio, on-screen visuals, and haptics.
Private by design
Form analysis runs on-device — your camera feed is processed locally for speed and privacy, never streamed to a server.
Replay the tape
After each set, scrub a slow-mo replay with a trajectory line tracing the bar path — the same video review pros use, automated.
How am I doing?
Your year so far.
Pillar 04
Numbers that don't just sit there. They re-write your plan.
Most apps show you charts. Fit4Gains shows you charts and acts on them. Every metric flows back into the planning engine, so progress isn't just measured — it's the input that makes tomorrow's session smarter.
See exactly how you're trending
Volume, sessions vs planned, sets, reps, time trained and best lifts — comparable across week, month, year or all-time.
Period-on-period, at a glance
“How am I doing?” compares May vs April with clear up/down deltas. Direction matters more than vanity numbers.
Your year, in one heatmap
A consistency heatmap of every training day, plus an automatic feed of recent PRs and milestones — your data is the steering wheel, not the dashboard.
Pillar 05
Eat for the session you just did — and the one you're about to.
Training and food aren't separate problems. The AI builds meal plans around your goals, tastes, budget and — uniquely — your actual training load, dialling calories and macros up on heavy days and down on rest days automatically.
Plans that fit your real life
Personalised by goal, diet style, allergies, cooking time, budget, family size and cuisine. Precise macro targets, not vague advice.
Logging that takes seconds
Snap a photo and AI identifies the meal; or say it; or barcode-scan; or one-tap your usual. Plus water tracking with reminders.
Recipes + a shopping list that writes itself
AI-generated recipes from your preferences, imports from cooking sites, and automatic grocery lists with cost estimates.
Pillar 06
The hardest part of training isn't the workout — it's showing up on the days you don't feel like it.
Streaks, leagues and rewards give you a reason to. Every rep, every good-form set, every logged meal earns progress — and consistency stops being something you have to white-knuckle through.
Earn it
XP, visual levels, daily & weekly streaks with bonus multipliers, and weekly leagues with promotion and relegation.
Collect it
100+ achievement badges and an avatar that visibly evolves as you progress, with celebration animations.
Real rewards, not just confetti
Unlock exercises, programs and analytics — plus real-world perks: partner discounts, gym day-passes and event tickets.
From zero to first session in ~10 minutes
Set up once. It remembers everything after that.
Set your goal
Weight loss, muscle, general fitness or sport. A quick level check (push-ups? a mile?).
Personalise
Age, body stats, equipment, time per session, preferred styles, and any injuries.
Dial in food
Diet preferences, cooking time, budget and meal-plan cadence.
Try your first move
Try one exercise with live form tracking and an instant assessment, then confirm or tweak difficulty.
Make it a game
Create your avatar, pick your first challenge, invite a friend, set your nudges.
Then — every day
session.
Chest & Triceps,
done.
Under the hood
One AI coach. Six jobs. Zero appointments.
One model plans your training, another generates the demos, a third watches your form on the camera, a fourth feeds your nutrition. Every number you log changes what the system asks of you next.
Most apps record what you did. Fit4Gains uses it.
The honest comparison
Coach-grade intelligence. App-grade price.
| Fit4Gains | Personal trainer | Typical app | Smart-gym hardware | |
|---|---|---|---|---|
| Personalised, adaptive plan | ||||
| Demo video for every exercise | 5,000+ | |||
| Real-time form correction | camera | |||
| Rep counting & form scoring | ||||
| Integrated nutrition | ||||
| Gamified accountability | ||||
| Available 24/7, anywhere | ||||
| Hardware required | Just your phone | n/a | None | Expensive unit |
| Typical cost | ≈ coffees / mo | ££££ | £ | £££££ |
Camera-based form trackers prove the tech works. Fit4Gains is the first to put all six trainer jobs behind one subscription — no hardware lock-in, no four-figure machine, no hourly booking.
Web · iOS · Android
Plan on your laptop. Train from your pocket.
Build and review programs on the spacious web app; take live form tracking, demos and logging into the gym on mobile. Everything syncs instantly — your plan, your numbers and your streak are the same on every device.
Chest & Triceps.
Prop your phone anywhere for hands-free form tracking — no special mount or accessory required.
Simple pricing
Start free. Upgrade when you want more.
Everything you need to start training smart.
- AI workout planning
- Full exercise video library
- Workout logging & history
- Streaks, XP & basic achievements
- Nutrition logging
Charts, calculators, and unlimited everything.
- Everything in Free, plus:
- Real-time form tracking & form scoring
- Charts & insights — 1RM trends, volume, best sets
- Smart warm-up — auto-calculated warm-up sets
- Plate calculator — multiple bar types & custom plates
- Unlimited templates — save & sync as many as you want
- Full AI nutrition planning & adaptive meal plans
- Advanced analytics, body-scan tracking & reward perks
- Export your data — CSV · Apple Health · anywhere
Cancel anytime · No card needed for trial
What early members say
Real people. Real gains.
Genuine member stories drop here at launch. Until then — join 2,000+ on the early-access waitlist.
Questions, answered
Everything else you're wondering.
Start your first plan today.
Sign up free, answer five quick questions about how you train, and have a structured week-one plan in under ten minutes.
Web & mobile · No card needed for trial · Cancel anytime