BELIEVR: Running & Triathlon
Niklas Seibold Health & Fitness iPhoneiPadiPod touch
BELIEVR: Running & Triathlon is a free Health & Fitness app for iPhone and iPad by Niklas Seibold. Requires iOS 15.1. Updated October 19, 2026.
- Price
- Free
- on the App Store
- Size
- 57 MB
- Age 17+
- Updated
- Oct 19
- 2026 · v1.4.0
Screenshots
About BELIEVR: Running & Triathlon
Become the athlete you know you can be. Train for your next Running or Triathlon event with clarity, structure, and confidence — without your training taking over your life. BELIEVR gives you a fully personalized training plan for your 5K, 10K, Half Marathon, Marathon, or your Sprint-, Olympic-, Middle-, or Long Distance Triathlon, that adapts to your schedule, your progress, and your goals — so you always know exactly what to do. Whether it is your first race or you are a seasoned athlete, our BELIEVR Coach guides your training and gives you relevant and useful insights before and after every session. Your training adapts as your life changes, syncs with your devices, and you are able to adjust your plan any time. WHY BELIEVR Traditional training plans are too rigid & complex — making training hard to sustain in real life. BELIEVR simplifies everything into a personalized plan that adapts to your fitness, schedule, and race goals — built from real-world race experience. BENEFITS OF BELIEVR 1) Personalized Running & Triathlon Training Plan: Structured for your Race, your level, and your goals - based on smart scientific training methods and real event experience Triathlon Plans cover Swim-, Bike-, Run-, and optional Mobility & Strength Sessions. Running Plans cover Run-, Strength & Mobility Sessions. 2) Coach Guidance for every session: Know exactly what to focus on before and after each workout, based on your progress and performance. 3) 24/7 Plan Adjustment: We get it, Life happens. Adjust your plan or move your sessions at any time so you can make progress even if your schedule changes. 4) Seamless Sync with Garmin & Apple Watch Sync your sessions to your device and receive data-driven feedback after every workout. BY ATHLETES, FOR ATHLETES Founded by an Ironman finisher and built to enable athletes to experience the mental and physical transformational power of endurance sport. Train to achieve, while still having a life. GET STARTED TODAY Download BELIEVR and start your personalized running or triathlon training plan today. Try for free for 14 days. If you’re not satisfied, our Happy Athlete 14-Day Guarantee gives you peace of mind — you can request a refund from Apple within 14 days of purchase through your App Store account. SUBSCRIPTION DETAILS - Payment is charged via your App Store account - Subscription renews automatically unless canceled - Manage or cancel anytime in your App Store settings —— Privacy Policy: https://joinbelievr.com/privacy-policy Terms & Conditions: https://joinbelievr.com/terms Support: [email protected] —— Apple Watch & Apple Health: BELIEVR sends your planned sessions to the Workout app on Apple Watch and reads your completed workouts from Apple Health to mark sessions done and analyse them. Sending sessions requires watchOS 11 or later (Apple Watch Series 6 or newer, SE 2nd gen, Ultra).
What’s new
Version 1.4.0 · Updated October 19, 2026
Meet your Coach. Your plan now keeps up with how you actually train, recover and feel. • Adapts with you: missed a session or had a rough week? Coach moves and eases sessions for you. Every change can be undone. • Sunday review: every week Coach checks your plan against your real training and recalculates what's ahead. • Daily brief: open the app and know exactly what today is for. • Ask Coach: chat about any session, your fitness or race day. • Recovery at a glance: HRV, resting heart rate, sleep and VO₂max from Garmin or Apple Health. • Race prediction: based on your real fitness, not a guess. • Calendar sync: your sessions in your calendar.
App privacy
The developer, Niklas Seibold, 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:
- Diagnostics: Crash Data, Performance Data
- Health & Fitness: Health, Fitness
- Purchases: Purchase History
- Financial Info: Payment Info
- Contact Info: Email Address, Name
- User Content: Photos or Videos, Other User Content
- Identifiers: User ID
- Usage Data: Product Interaction
Used for: Analytics, App Functionality
Alternatives to BELIEVR: Running & Triathlon
Looking for apps like BELIEVR: Running & Triathlon? Here are 6 similar apps on the App Store. The highest rated is RacePal: Triathlon Training (5.0/5), and all 6 are free to download.
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RacePal: Triathlon Training
5.0
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Try Training
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Temper: Train. Fuel. Transform
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Tripath: Triathlon Plans
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TriTracker - Tri Training
5.0
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Stride Marathon Training Plans
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| BELIEVR: Running & Triathlon | – | Free | October 19, 2026 | |
| RacePal: Triathlon Training | 5.0 / 5 (4) | Free | Sep 2, 2026 | Compare |
| Try Training | – | Free | Apr 30, 2026 | Compare |
| Temper: Train. Fuel. Transform | – | Free | Apr 7, 2026 | Compare |
| Tripath: Triathlon Plans | – | Free | Jun 5, 2026 | Compare |
| TriTracker - Tri Training | 5.0 / 5 (2) | Free | Mar 15, 2026 | Compare |
| Stride Marathon Training Plans | 5.0 / 5 (12) | Free | Sep 14, 2026 | Compare |