Phasr: Endurance Coach
Marcel Baten Health & Fitness iPhoneiPadiPod touch
Phasr: Endurance Coach is a free Health & Fitness app for iPhone and iPad by Marcel Baten. Requires iOS 26.2. Updated October 30, 2026.
- Price
- Free
- on the App Store
- Size
- 9 MB
- Age 9+
- Updated
- Oct 30
- 2026 · v2.2.0
Screenshots
About Phasr: Endurance Coach
Phasr builds a personalized training plan for your goal and adapts it based on how training actually goes. Not a static plan that no longer fits two weeks later, but a coach that adjusts as you go. ADAPTIVE PLAN The app tracks how many sessions you complete and suggests adjustments when it makes sense. Missed two workouts in a row? Shift your plan by a week with one tap. Three strong weeks? Consider more volume. Change your weekday availability? Workouts move automatically with you. BUILT FOR YOUR SPORT Specific plans for running (5K to ultra), triathlon (Sprint, Kwart, Olympic, 70.3, Full Ironman), Hyrox, and cycling. Plans use proven periodization with build weeks, recovery weeks, and a focused taper into your event day. FITS YOUR WEEK Set per day how long you can train (1h, 1.5h, 2h, or 3h+). Key sessions like long runs and intervals land on your longer days. Lighter workouts on shorter days. Tell Phasr which days you can do which sport, and the plan respects it. SYNCS WITH YOUR TOOLS Automatic Apple Health integration: completed workouts link to your plan, HRV and resting heart rate are tracked, VO2max informs your pace zones. Push your weekly workouts to your Garmin watch with one tap. Push reminders for upcoming sessions and plan suggestions, respecting quiet hours. TRACKS YOUR TRAINING LOAD Training load metrics (ATL, CTL, TSB) with 14-day charts show how your body is responding. Pace zones are calculated from your threshold pace or VO2max, with safeguards so easy-paced tempo runs do not skew future targets. PRIVATE BY DESIGN All training data is stored locally and syncs only between your own devices via iCloud, so your plan stays in sync across iPhone and iPad. No analytics, no tracking, no third-party data sharing. The developer does not collect any data from this app. Built by athletes, for athletes.
What’s new
Version 2.2.0 · Updated October 30, 2026
Train without a finish line. Alongside race plans, Phasr now offers ongoing plans. Ongoing plans - Stay fit: keep your training load steady, with no race on the calendar. - Keep improving: your plan grows step by step. Every four weeks Phasr looks at what you actually did. Kept up well? The next block gets a little harder. Missed a lot? It eases off. - Choose an ongoing plan when you start, switch to one from your profile, or pick it as your next step after a race plan. - After race day, Phasr adds easy recovery weeks and asks how you want to continue: an ongoing plan or a new race goal. Linking activities - Choose which Apple Health or Garmin activity belongs to a workout. Did a session on the wrong day get linked to the wrong workout? Swap it in a few taps. - An activity you unlink stays unlinked. Phasr no longer links it again on its own; you can always link it yourself. Fixes - Marathon pace and race pace workouts now target your exact goal pace, in the app and on your Garmin. - Workout names now match the planned distance, also in taper and recovery weeks. - Volume adjustments now also change the number of interval repeats, so your Garmin workout matches the plan. - Undoing a completed workout keeps the Apple Health activity in your history. - The week number in your plan is now correct on Mondays. - Your Garmin sign-in is stored more securely.
App privacy
The developer, Marcel Baten, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Phasr: Endurance Coach
Looking for apps like Phasr: Endurance Coach? Here are 6 similar apps on the App Store. The highest rated is Athlete Space: AI Coach (5.0/5), and all 6 are free to download.
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Hero Training - Coaching
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Dromos
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Stridee: Plan Train Run Bike
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Hiron
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Athlete Space: AI Coach
5.0
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Coach Max: AI Running Coach
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Phasr: Endurance Coach | – | Free | October 30, 2026 | |
| Hero Training - Coaching | – | Free | Jul 17, 2026 | Compare |
| Dromos | – | Free | May 11, 2026 | Compare |
| Stridee: Plan Train Run Bike | – | Free | Oct 6, 2026 | Compare |
| Hiron | – | Free | Oct 17, 2026 | Compare |
| Athlete Space: AI Coach | 5.0 / 5 (9) | Free | Oct 31, 2026 | Compare |
| Coach Max: AI Running Coach | – | Free | May 30, 2026 | Compare |