myoxin Download
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Build muscle faster, without the guesswork.

Making progress in the gym comes down to small decisions, made week after week. myoxin gets them right for you, and explains each decision it makes.

Download on theApp Store Get it onGoogle Play

100% FREE  ·  NO SUBSCRIPTION, EVER

EVERY SESSION, YOU DECIDE

Small decisions, big difference.

Which exercise. How many sets. How close to failure. You answer these every session. Week after week, those answers decide whether you grow or stall.

STEP 01 · YOUR PROGRAM

Your next session is already planned around your goal, schedule, and equipment. Above it: why today looks this way, editable any time.

STEP 03 · UNDERSTAND

myoxin measures the stimulus each muscle actually received, set by set. You always know which muscle needs work.

myoxin app screen: today's session, Pull, with a short paragraph explaining why and a Start session button. myoxin app screen: workout logger mid-session, sets with weight, reps, and RIR, and a running rest timer. myoxin app screen: full-body muscle stimulus map, chest rated High, delts rated Good, abs rated Light. myoxin app screen: Sunday weekly review showing what changed in next week's plan and why.

MEET MYOXIN

Meet myoxin. It makes those decisions with you, learned from your own training, and explains every one.

STEP 02 · LOG

Weight, reps, RIR, supersets: logged in the time it takes to rerack. Every number feeds the analysis that plans your next session.

STEP 04 · ADAPT

Every Sunday, myoxin reviews the week you trained and writes the changes into next week's plan, reasoning included.

myoxin app screen: today's session, Pull, with a short paragraph explaining why and a Start session button. myoxin app screen: workout logger mid-session, sets with weight, reps, and RIR, and a running rest timer. myoxin app screen: full-body muscle stimulus map, chest rated High, delts rated Good, abs rated Light. myoxin app screen: Sunday weekly review showing what changed in next week's plan and why.

EVERY SESSION, YOU DECIDE

Small decisions, big difference.

Which exercise. How many sets. How close to failure. You answer these every session. Week after week, those answers decide whether you grow or stall.

MEET MYOXIN

Meet myoxin. It makes those decisions with you, learned from your own training, and explains every one.

STEP 01 · YOUR PROGRAM

Your next session is already planned around your goal, schedule, and equipment. Above it: why today looks this way, editable any time.

STEP 02 · LOG

Weight, reps, RIR, supersets: logged in the time it takes to rerack. Every number feeds the analysis that plans your next session.

STEP 03 · UNDERSTAND

myoxin measures the stimulus each muscle actually received, set by set. You always know which muscle needs work.

STEP 04 · ADAPT

Every Sunday, myoxin reviews the week you trained and writes the changes into next week's plan, reasoning included.

EVERY SESSION, YOU DECIDE

Small decisions, big difference.

Which exercise. How many sets. How close to failure. You answer these every session. Week after week, those answers decide whether you grow or stall.

MEET MYOXIN

Meet myoxin. It makes those decisions with you, learned from your own training, and explains every one.

STEP 01 · YOUR PROGRAM

myoxin app screen: today's session, Pull, with a short paragraph explaining why and a Start session button.

Your next session is already planned around your goal, schedule, and equipment. Above it: why today looks this way, editable any time.

STEP 02 · LOG

myoxin app screen: workout logger mid-session, sets with weight, reps, and RIR, and a running rest timer.

Weight, reps, RIR, supersets: logged in the time it takes to rerack. Every number feeds the analysis that plans your next session.

STEP 03 · UNDERSTAND

myoxin app screen: full-body muscle stimulus map, chest rated High, delts rated Good, abs rated Light.

myoxin measures the stimulus each muscle actually received, set by set. You always know which muscle needs work.

STEP 04 · ADAPT

myoxin app screen: Sunday weekly review showing what changed in next week's plan and why.

Every Sunday, myoxin reviews the week you trained and writes the changes into next week's plan, reasoning included.

The engine behind every decision.

Higher training frequency

4 OF 5 WEEKS AGREE

More sleep before leg days

BUILDING · 3 OF 5

Longer rests on top sets

TENTATIVE · 2 OF 5

PATTERNS

It notices what your best weeks share.

Patterns from your own training, held as tentative until enough sessions confirm them. Hundreds of statistical checks run across your weeks to surface what repeats.

RECOVERY

Your wearable finally matters for lifting.

Sleep, HRV, and recovery shape next week's plan through Apple Health or Health Connect.

I NOTICED

Your bench moves best at two sessions a week.

Pressing twice a week beat three in your last six weeks. Volume unchanged.

CONFIDENCE: MEDIUM · EVIDENCE: 4 SESSIONS

THE COACH

Show it. Don't explain it.

Send a video of your set, a photo of a machine, a voice note. In the app, or on WhatsApp if that's easier.

THE LIBRARY

Peer-reviewed papers on demand.

When a question needs outside evidence, your coach searches the literature and weighs it against your own training.

It compounds. Every week you log makes the next plan sharper.

Read the methodology →

100% free.

Here is why.

FREE BY DESIGN

Your coach runs on your own AI key, connected in about a minute. There's no myoxin subscription, no plan to unlock, nothing to mark up; the provider sets any free-tier limits or usage charges on that key, not us.

GOOGLE GEMINI  ·  XAI GROK  ·  Z.AI

What is myoxin?

myoxin is an AI workout planner and strength training coach. It builds or imports your program, logs your workouts, tracks muscle stimulus, and reviews your training every week to say what should change next, and why.

Is myoxin free?

Yes, 100% free, on your own AI key: Google Gemini, xAI Grok, or Z.AI, about a minute to connect, and the provider sets any free-tier limits. Logging, programs, and analytics all work regardless.

Will it change my plan every workout?

No. Stable training is what makes progress measurable. myoxin reviews your week every Sunday and changes load, volume, exercises, or scheduling when the evidence supports it, and explains why either way.

Do I need a wearable?

No. Your workout history is the foundation. Connect Apple Health or Health Connect and your sleep, HRV, and recovery data start feeding your weekly plan too, but nothing stops working without one.

Can I use my own program and exercises?

Yes. Bring your program, create custom exercises, and keep control of any part of the plan. Custom work counts in the analysis like everything else.

Walk into the gym. Know what to do and why.

Download myoxin. Bring your plan or let it build one, then start logging. Every session after that gets a little more yours.

Download on theApp Store Get it onGoogle Play