KLYN - 28 Day Fitness Coach

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About this app

KLYN is the fitness coach you've always wanted — without the price of personal coaching.

28-DAY PROGRAMS
Every program is built to transform your body in 4 weeks, with week-by-week progression:

- Shape Bodyweight: weight loss, zero equipment, to start or start over
- Shape Equipment: toning with dumbbells, at home or at the gym
- Build Start: muscle gain for beginners, the fundamentals of lifting
- Build Strong: advanced muscle gain, hypertrophy and strength
- Military: intense conditioning, strength + endurance + mindset
- KLYN Mind: posture, breathing, meditation and recovery

CAMERA COACH — YOUR FORM CORRECTED LIVE
Prop up your phone, film yourself during your set: KLYN counts your reps and watches your posture in real time. Everything is analysed directly on your phone — no video is ever sent anywhere.

SCAN YOUR PLATE
Take a photo of your meal and KLYN recognises the food, then works out the calories and macros for you. No more endless manual logging.

NUTRITION INCLUDED
Every training program comes with a complete nutrition plan — 28 days, 3 meals a day, matched to your goal. No more wondering what to eat.

YOUR PROGRAM ADAPTS TO YOU
Too easy, too hard? You rate your session and the next one adjusts automatically. No time today? Build your own session in seconds, based on the time and equipment you actually have.

YOUR PERSONAL COACH
Maya, Atlas, Onyx, Léna, Kaia: every program has its own dedicated coach. They guide you session after session with daily messages and detailed exercises. An AI Coach answers all your questions about training, nutrition and progress.

SMART TRACKING
- Streak and progress in real time
- Before/after progress photos
- Weight and measurements saved and synced
- Motivating milestones (day 7, day 14, program complete)
- Calories adjusted automatically from your smartwatch
- Weekly recap every Sunday

NOT READY TO SUBSCRIBE YET?
Watch a short video and unlock your full training day. One ad watched = one day of access. And if you subscribe, you never see a single ad.

REFER YOUR FRIENDS
30 days free for every friend who subscribes through you.

AVAILABLE IN 4 LANGUAGES
French, English, Spanish and Portuguese.

REAL RESULTS
Thousands of people have transformed their bodies with KLYN. No shortcuts, no false promises — just a structured program, consistency and the right tools.

3-day free trial · Card details required at sign-up · Cancel anytime
28-day fitness coach: workouts, nutrition, meal scanning and camera coach.
Updated on
Aug 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Personal info, Health and fitness and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Nouveau : débloque ta journée en regardant une courte vidéo.

• Séance du jour, nutrition, Mind et Coach IA ouverts pour la journée
• Séance bonus et générateur de recettes à partir de ton frigo
• Après le quiz, accès direct au programme recommandé
• Corrections d'affichage et de stabilité