Molec
Your coach, not your logbook
Free · Designed for iPhone. Not verified for macOS.
Your coach adjusts today's session to how you slept and how you're showing up. No forms to fill in: it reads your watch and decides.
Molec isn't a workout logbook. It's a coach that looks at your data and makes decisions with you.
IT KNOWS HOW YOU'RE SHOWING UP EVERY DAY
It reads your sleep, your heart rate variability and your resting heart rate from Apple Health, compares them with your own numbers, not with a chart, and adjusts the day's session. If you slept an hour and a half less than usual last night, it tells you and trims the session. If you're feeling sharp, it doesn't hold you back.
A PLAN THAT MOVES WITH YOU
Your routine isn't a frozen spreadsheet. If you skip Monday, your coach rearranges the week. If today was a rest day and you feel like training, you pull a session forward and its day becomes the rest day. Without breaking the plan.
TALK TO IT
Ask it anything: why it changed an exercise, what to do with the two sessions you have left, whether that weight is too much. It knows your full history (every set, every meal, every night), so it answers with your numbers, not magazine advice.
WHILE YOU TRAIN
Your sets in one tap, with last time's weight and reps already filled in. Rest timers that run on their own. And on your Lock Screen, your current set and your heart rate.
FOOD, WITHOUT WEIGHING GRAMS BY HAND
Log a meal with the camera, the barcode or by typing it. Your calorie target comes from your REAL energy burn measured by your watch when it's connected, not from a generic formula.
WHAT YOU DO OUTSIDE COUNTS TOO
If you go for a run or play tennis, Molec finds out through Apple Health and adds it to the week's load. And what you train in Molec goes to Apple Health, so it counts toward your rings.
YOURS AND NO ONE ELSE'S
Your workouts, your measurements and your meals live on your iPhone; only what you choose to share with your friends or your trainer leaves it. What you write to your coach goes to our server only so it can answer you, and it isn't stored there. You can delete everything from Settings, and delete means delete.
Molec works best with an Apple Watch or a Whoop, but it doesn't need them: with just your iPhone it still reads your sleep and your steps.
Ratings & Reviews
• Every morning your coach looks at your whole week (load, recovery, sleep and weights) and tells you on Today what it decided and why.
• What you lift is your starting point next time, even if you finish the workout halfway.
• Your body at a glance: wrist temperature and overnight oxygen against your normal, and your sleep debt for the week.
• Sets per muscle counted the way the evidence does, so each muscle gets what it needs.
• Get started with Molec: a getting-started guide on Today that checks itself off as you use the app.
• When you finish a workout, a visual summary: each exercise against last time, your muscles and what's next time.
• Weekly effort: brings together the gym and what you do outside it, and tells you if you're above or below your usual.
• Routines: add an exercise to a superset or circuit you already built, and pick the session by its photos.
• A more guided Community: your username already suggested and a starting point to train with friends.
• For coaches: your code always in view, first steps and routines with supersets, circuits and EMOMs, in kilos or pounds.
The developer, Yodai LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yodai LLC
- Size
- 197.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 4 more
- English, Basque, Catalan, Galician, Spanish
- Age Rating
9+
- 9+
- Contains
Messaging and Chat
User-Generated Content
Health or Wellness Topics
- Copyright
- © 2026 Yodai LLC
