Loosen: Flexibility Coach
Jonas Fenger Petersen Health & Fitness iPhoneiPadiPod touch
Loosen: Flexibility Coach is a free Health & Fitness app for iPhone and iPad by Jonas Fenger Petersen. Requires iOS 16.0. Updated May 25, 2026.
- Price
- Free
- on the App Store
- Size
- 104 MB
- Age 12+
- Updated
- May 25
- 2026 · v2.2.0
Screenshots
About Loosen: Flexibility Coach
YOU MEANT TO STRETCH YESTERDAY. AND THE DAY BEFORE. Loosen makes it the easiest 10 minutes of your day, and tells you exactly which stretches your body actually needs. FLEXIBILITY SCORE Your daily anchor: a single number, 0–100, calculated from your Apple Health signals (sleep, sit time, HRV, recent workouts), the per-area baseline you set in the 30-second flexibility quiz, and how long each muscle group has gone untouched. It updates after every session and when you open the app. TODAY'S PICK A short routine prescribed straight from your score, with the reasoning shown. “You sat 11 hours yesterday. Hips first.” No black box. Two taps after each session tell us how it felt and where you're still tight, and the next session adjusts quietly. A PLAN THAT'S ACTUALLY YOURS No fixed program, no off-the-shelf template. Your plan is built around your goals, your problem areas, your sleep, your sit time, your training load, and how you felt after the last session. The next session is built for the body you have today, not the next slot in a fixed program. A LIBRARY THAT GOES WHERE YOU'RE TIGHT 190 guided routines, indexed by what's bothering you: • Tight hips after long sitting • Lower-back relief • Shoulders and neck • Pre-bed wind-down • Post-run lower-body • Hamstrings • Splits work Or describe what you need (“10 minutes for a stiff lower back, evening”) and the AI Routine Builder assembles a session from the pose library. BUILT FOR THE BODY THAT SITS ALL DAY Loosen is for the person who works at a desk, knows they should stretch, and wants useful signal over wellness vibes. Honest measurements, no flow language, no streak shame. The numbers do the talking. TRACK WHAT'S ACTUALLY CHANGING Flexibility Score over time, sessions completed, current streak, and a body-area balance chart that shows where you've been spending your minutes. KEY FEATURES • Flexibility Score (0–100) from Apple Health, sleep, recent training, and how long each muscle group has gone untouched • Today's Pick: a short, prescribed session with the reasoning shown • Adaptive plan that rebuilds itself from your signals and post-session feedback • 190 curated routines indexed by where you're tight • AI Routine Builder: describe what you need, get a session • Session player with voice cues, illustrated poses, timers, skip and pause • Apple Health integration (sleep, steps, HRV, workouts) • Stretch for 5 minutes or 20. You decide. • Available in English, Spanish, German, and French FREE TO START Today's Pick and two routines of your choice are always free. Premium unlocks the full library and the AI Routine Builder. AFTER 30 DAYS You feel less stiff. That's the promise. PRIVACY Your Apple Health data stays on your device. Nothing goes to AI without your explicit opt-in. IMPORTANT This isn't medical advice. If you have pain or an injury, see a clinician. Privacy Policy: loosen.app/privacy Terms of Use: loosen.app/terms
What’s new
Version 2.2.0 · Updated May 25, 2026
- Redesigned today screen with your flexibility score, context tiles, and a tap-through breakdown - New plan view with a progress ring and clearer level milestones - Smoother onboarding, session, and check-in screens with refreshed visuals
App privacy
The developer, Jonas Fenger Petersen, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID, User ID
- Health & Fitness: Health, Fitness
- Contact Info: Name, Email Address
- User Content: Other User Content
Used for: Analytics, Product Personalization, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data
Used for: Analytics, App Functionality
Alternatives to Loosen: Flexibility Coach
Looking for apps like Loosen: Flexibility Coach? Here are 6 similar apps on the App Store. The highest rated is MA Journey (5.0/5), and all 6 are free to download.
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
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