Yes. No expiration, no credit card required.

HTTPS, bcrypt, encrypted emails at rest, E2E messages. EU servers, GDPR compliant.

v2.4 · May 2026 Made in Spain Android · 20 MB

Train with AI.
Progress with data.

A personal AI coach, automatic periodization and an allometric ranking. The Android gym app that organizes your training so you actually build muscle — with evidence, not guesswork.

Get it on Google Play → See how it works Free · No credit card

20MB

Install size

4/yr

Ranking seasons

Social layers

Volume / week +12%

18,420kg

9:41

01 80kg 8 reps ✓

02 85kg 7 reps ✓

03 87.5kg — — ○

04 90kg — ○

AI Coach

RPE on set 2 was high. Try 87.5 kg × 6 to keep technical quality before reaching failure.

Rank · 75-80 kg ↑ 14

#247

Spainof 8,412

01 — Product

Six systems, one routine that progresses itself.

Each feature solves a concrete problem of serious training: plan, execute, measure, compete. No shortcuts, no hype.

Premium

Smart hints — configurable. Per set, per exercise, or on demand.

The coach reads your history, your RPE and your progression. Choose how often it speaks: a hint after every set, a summary after every exercise, or on demand only — a tap when you want a second opinion. Same engine, three rhythms.

02 Set 2 of 4 · detected RPE 8.5
03 Suggestion: 87.5 kg × 6 (preserve technique)
08 Set 3 completed · +2.5 kg vs. last week
09 Next session: subtle deload on triceps

02 — Onboarding

Three steps. Two minutes.

Download and install

Available on Google Play. The app weighs 20 MB and the base plan is free forever — no card, no expiration, no trial trap.

Android 8+ 20 MB

Set up your profile

Level, goal, available equipment and injuries. The routine and exercises adapt from the very first set — no generic templates.

4 questions ~2 min

Train and measure

Log each set. The app calculates volume, estimates your 1RM and proposes the next progression. You just lift.

Auto-tracking Real-time

03 — Plans

Pay for what you use. Once.

Free never expires. Premium is a one-time payment — no subscription, no renewal. Profile Boost is the only recurring plan currently live; Chat AI is still in development.

Free

Forever

€0

No card · No expiry

Unlimited routines + custom exercises
Full session history & ranking
Import CSV history · Hevy, Strong, FitNotes, Repcount
Equipment-aware · pick your gear, only compatible moves are proposed
Health Connect · Samsung, Fitbit, Google Fit
Linear periodization
AI routine generator · 2/week · respects injuries & equipment
Follow anyone · public or private profile
Activity feed from people you follow
Share routines · followers can copy (with custom exercises)
Achievement cosmetics · medals, frames, backgrounds unlocked by challenges

Analytics

One-time · Charts only

€3.99

For data-only users

Everything in Free
Body heatmap
Historical PRs
Progressive overload detection
Volume per muscle group
Fatigue control · ACWR (acute:chronic workload ratio)

Coach-grade data — heatmap, PRs, overload, ACWR.

Pay once — no renewal, no price hikes.

Premium

One-time payment

€7.99

Pay once · Keep forever

Everything in Free
Everything in Analytics — heatmap, PRs, overload, volume, ACWR
AI Coach · configurable: per set, per exercise or on demand
Wendler 5/3/1 periodization
AI routine generator · 12/week (vs 2) · respects injuries & equipment

€7.99 once vs €60–100/yr in typical AI gym subs.

Bundles Analytics (€3.99) + AI Coach + Wendler — more value, less stack.

All future Premium updates — always included.

Chat AI

Subscription · In development

€2.99/mo

Conversational coach · Coming soon

Conversational AI coach
Ask anything: technique, programming, recovery
Context-aware (knows your history)
Separate from the auto Coach in Premium

Early-bird price — €2.99/mo locked for the first launch wave.

Profile Boost

Subscription

€3.99/mo

Visibility & community

Appear in national + global rankings (otherwise followers only)
Special medals from public rankings
Promoted profile in user search
Distinctive avatar mark · Featured badge
E2E encrypted chat with other featured users

Seasonal medals stay on your profile forever — even after you cancel.

Cancel anytime — 30 days continued access after last payment.

Cosmetics

One-time · Personalization

€4.99

For the show-offs

Animated medals
Legendary profile frames
Exclusive titles
Particle effects on profile

Pay once — animations exclusive to this pack, never in achievements.

Equivalent of months of challenge grinding.

All prices include VAT · Paid via Google Play

Feature	Free	Analytics	Premium	Chat AIIn dev	Boost	Cosmetics
Unlimited routinesNo template limit	✓	✓	✓	✓	✓	✓
Full session history	✓	✓	✓	✓	✓	✓
Allometric ranking	✓	✓	✓	✓	✓	✓
Custom exercisesBuild your own	✓	✓	✓	✓	✓	✓
Social · Follow, feed & share routinesPublic or private profile	✓	✓	✓	✓	✓	✓
Achievement cosmeticsMedals, frames, backgrounds via challenges	✓	✓	✓	✓	✓	✓
CSV history importHevy, Strong, FitNotes, Repcount	✓	✓	✓	✓	✓	✓
Equipment-aware suggestionsManual + AI generator	✓	✓	✓	✓	✓	✓
Health ConnectSamsung, Fitbit, Google Fit	✓	✓	✓	✓	✓	✓
Linear periodization	✓	✓	✓	✓	✓	✓
Deep analyticsHeatmap, PRs, progressive overload	—	✓	✓	—	—	—
Fatigue monitoring · ACWRAcute:chronic workload ratio	—	✓	✓	—	—	—
AI CoachPer set, per exercise, or on demand	—	—	✓	—	—	—
AI routine generatorInjury & equipment aware	2/wk	2/wk	12/wk	2/wk	2/wk	2/wk
Wendler 5/3/1 periodization	—	—	✓	—	—	—
Conversational AI chat	—	—	—	✓	—	—
Public ranking (National + Global)Without this, followers only	—	—	—	—	✓	—
Public-ranking medalsSpecial seasonal medals	—	—	—	—	✓	—
Featured profile in searchAvatar mark + search promotion	—	—	—	—	✓	—
E2E chat with featured users	—	—	—	—	✓	—
Premium cosmeticsMedals, frames, particles	—	—	—	—	—	✓

★ Recommended

Premium, once.

Premium is Free + the entire Analytics pack (heatmap, PRs, progressive overload, volume per muscle) plus the AI Coach, Wendler 5/3/1 periodization and an extended generator. €7.99, one-time. No subscription, no renewal, no surprises.

€7.99 one-time
payment Equivalent to ~~~12 months~~
of similar subscriptions

Get it on Google Play →

Includes everything in Free, plus:

AI Coach — configurable hints: per set, per exercise, or on demand.
Deep analytics — body heatmap, historical PRs, progressive overload and ACWR.
Wendler 5/3/1 — the classic powerlifting cycle, fully automated.
Extended AI generator — up to 12 routines per week (vs. 2 on Free).

04 — Social

Seven social layers built in. Designed so training feels like a sport — measurable competition, real medals, a real club. Not a likes economy, not engagement bait.

Other apps

A tracker.
And a basic forum.

—Logging sets and reps — the core, often well done.
—Social feeds focused on likes, not measurable competition.
—No allometric ranking. No bodyweight class. No seasons.
—No real palmarés. No medal archive.
—No end-to-end encrypted chat.
—No cosmetic economy or “fame” tier.

GainAi

A tracker. And a scoreboard.
And a club.

+Allometric ranking: kg moved × bodyweight × time — an honest metric.
+Permanent medals from 4 seasons/year — a real palmarés.
+Real E2E encrypted chat (ECDH + AES-GCM).
+Cosmetic economy fed by achievements, packs and donations.
+Public season archive — history lives forever.
+Profile Boost: legitimate status, not a vanity badge.

05 — Questions

What people ask before downloading.

If your question isn't here, write to [email protected].

Is it really free?

Yes. The Free plan never expires, doesn't ask for a credit card and doesn't morph into a hidden trial. It includes unlimited routines, full history, allometric ranking, Health Connect and Linear periodization. If you stay on Free, you lose nothing.

Is it only on Android?

For now, yes. iOS is on the roadmap — no public date yet, but it's the next platform priority. Drop us your email and we'll let you know when the beta opens.

Is my data secure?

HTTPS on all traffic, bcrypt for passwords, encrypted emails at rest and end-to-end encrypted messages between users. EU servers (Railway, Frankfurt). GDPR compliant — you can export or delete all your data from Settings with one tap.

Can I import my history?

Yes. We support imports from Hevy, Strong, FitNotes, Repcount and any CSV with standard columns (date, exercise, weight, reps). The wizard guides you step-by-step and preserves your PRs.

Does it work offline?

Yes during training. Everything is stored locally and syncs when you regain connection. Only the AI Coach (which queries the model) and the real-time ranking require network — the rest works in the gym basement just fine.

What happens if I cancel Premium?

Premium is one-time, there's nothing to cancel. Profile Boost is monthly — you keep all your history, routines and data when you cancel and only lose access to that plan's specific features. Chat AI is still in development. You drop back to Free with no intermediate steps.

Can I unsubscribe whenever I want?

Yes — you can cancel any subscription (Profile Boost, Chat AI when it ships) at any time, with one tap. Access continues until 30 days after your last payment, so you don't lose the period you already paid for. After that you drop back to Free with all your history, routines and data intact. No retention calls, no dark patterns.

The next set counts.

Download GainAi, set it up in two minutes and let the app organize the rest. You lift — we move the data.

Get it on Google Play → See features again

Free plan forever · No card · 20 MB

Train with AI.
Progress with data.

Bench press

Six systems, one routine that progresses itself.

Smart hints — configurable. Per set, per exercise, or on demand.

Linear or Wendler 5/3/1. The routine advances on its own.

Compete against your weight — not 120 kg giants.

Weight comes in. Workouts go out.

What a coach would track in a spreadsheet — live.

The gym basement has no signal. Your app does.

Three steps. Two minutes.

Download and install

Set up your profile

Train and measure

Pay for what you use. Once.

Premium, once.

What people ask before downloading.

The next set counts.

Tweaks

Train with AI. Progress with data.

Six systems, one routine that progresses itself.

Smart hints — configurable. Per set, per exercise, or on demand.

Linear or Wendler 5/3/1. The routine advances on its own.

Compete against your weight — not 120 kg giants.

Weight comes in. Workouts go out.

What a coach would track in a spreadsheet — live.

The gym basement has no signal. Your app does.

Three steps. Two minutes.

Download and install

Set up your profile

Train and measure

Pay for what you use. Once.

Premium, once.

A scoreboard, not a feed.

Compete in your weight class. Win seasons. Keep medals.

End-to-end encrypted chat

Asymmetric follows & private accounts

Share any routine in one URL

Profile customization · 5 slots

Discovery & search

Profile Boost · the fame tier

A tracker. And a basic forum.

A tracker. And a scoreboard. And a club.

What people ask before downloading.

The next set counts.

Train with AI.
Progress with data.

A tracker.
And a basic forum.

A tracker. And a scoreboard.
And a club.