HeartMath vs endurancr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HeartMath
This app helps you manage stress, improve focus, and achieve optimal performance by aligning your heart, mind, and emotions. It offers guided sessions, immersive journeys, and coherence practices based on over 30 years of research.
- Real-time HRV Coherence Measurement
- Coherence Training
- Scientifically Validated Techniques
- Guided Learning Sessions
- Progress Tracking
- Heart-Brain Coherence Benefits
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Align your heart, mind, and emotions to help you manage stress, improve focus, and perform at your best. Enjoy HeartMath’s free intro experience to access your heart’s natural intelligence and see your heart-brain coherence as real-time feedback. Then start your 7-day free trial to explore a comprehensive collection of guided sessions, immersive journeys, and coherence practices designed to help you experience greater calm, focus, clearer thinking, and a more balanced you. **Inner Balance Coherence Plus sensor owners: Use your sensor to unlock a lifetime subscription.** Built on 30+ years of research on the heart-brain connection and supported by over 500 research studies, HeartMath is used in wellness and resilience programs at organizations including Stanford Healthcare and Kaiser Permanente, as well as in professional sports, the military, law enforcement, leading universities, non-profit organizations, and major corporations. It is used by coaches, trainers, and health professionals for stress education and resilience training. The HeartMath system is more than stress management: it’s a journey to more heart-centered living. This app puts HeartMath’s practical, research-supported tools right at your fingertips. Make mental and emotional well-being an achievable part of your daily life. The HeartMath technology is for stress education and resilience training. It is not a medical device. We encourage you to consult a health professional before making any medical decisions. KEY FEATURES • Real-time HRV coherence feedback: Use your phone’s camera or upgrade to the Inner Balance Coherence Plus sensor for a more precise signal and a free app subscription. • Coherence training: Whether you choose the game or the guided mode, watch your heart-rhythm pattern and coherence change in real time. • Research-Supported: Techniques developed from 30+ years of scientific research to help boost focus, positive feelings, and your ability to manage stress. • Guided learning: Explore guided meditations, courses, and videos led by HeartMath trainers. • Progress tracking: View your progress over time with a variety of chart options. WHAT REGULAR COHERENCE PRACTICE CAN SUPPORT Heart-brain coherence is a balanced, focused state you create yourself through calm breathing and positive focus. Coherence supports the body’s natural ability to shift from tension to calm, helping you manage everyday stress and build inner balance. • SUPPORTS STRESS MANAGEMENT & EMOTIONAL BALANCE • SUPPORTS FOCUS AND MENTAL CLARITY — coherent states are associated with more focus, clarity, and creativity. • SUPPORTS RESILIENCE — regular practice can help you adapt to and recover from challenging situations more quickly. • ENHANCES EMOTIONAL WELL-BEING AND SELF-AWARENESS — practice can support a greater sense of inner calm and a more mindful relationship with your emotions. Subscription terms: • Subscriptions renew automatically at the end of each year. • You can cancel your subscription at any time in your account settings. • You will not be refunded for any unused portion of a subscription. • Price is subject to change. • Subscriptions are not available in all countries. • Full subscription terms: https://my.heartmath.com/terms If you’d like to purchase an Inner Balance Coherence Plus sensor to unlock complimentary lifetime access to the HeartMath app, please visit the HeartMath website.
endurancr
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endurancr builds a running plan around one goal, records your runs on Apple Watch or iPhone, and adapts the plan to what you really ran, like a running buddy who isn't pushy. No account, no feed, no ads. SET ONE GOAL Pick a race, from 5K to the marathon, and its date. endurancr builds a full plan with the VDOT method from Jack Tupper Daniels, paced to the fitness you have now. It uses a recent run from Apple Health, or a race result you type in. A short race shows your speed, not your endurance, so marathon pace starts a little easier until your long runs prove it. TRAINING FROM THE BOOKS Easy runs, threshold runs, intervals and marathon-pace runs, never more than two hard sessions a week. Strides keep your legs quick. Long runs build to 32 km for the marathon. A tune-up race six weeks out sets your paces. Race day tells you how to pace it and what to eat and drink, and after the race the plan brings you back with rest and easy runs. Based on Jack Tupper Daniels, Pete Pfitzinger, the Hansons and Hal Higdon. A PLAN THAT FOLLOWS YOU Every run counts, even one on a rest day. Missed kilometres are never piled onto the days after. Ran less than planned? The coming weeks build from what you actually ran, at most 10% more each week. Back from a break? Your paces ease a little and you start with easy runs. Strong runs nudge your paces up a little at a time. Drag days to swap them when life gets in the way. THE WHOLE PLAN See what you ran on each day, what you missed, what changed and why, your new paces next to the old ones, and what each week is for, all the way to race day. AN HONEST OUTLOOK Progress shows a finish-time range for today and for race day, and tells you whether your target is on track, within reach, a stretch or unlikely, and why. If it's out of reach, it suggests a realistic time. It only changes your target if you tap it. RUN ON YOUR WRIST OR YOUR PHONE Start today's run on Apple Watch with heart rate, or on iPhone with GPS. The run screens show time, distance, your pace and the target pace. The watch's own Auto-Pause holds your run at a traffic light, and a run on the watch shows on your iPhone's Lock Screen, where you can pause and finish it. Every run is saved to Apple Health. TRY IT WITHOUT INSTALLING The endurancr App Clip works out your training paces from one recent race, right in Safari or from a link. NOTHING HIDDEN How it works explains every rule the plan follows, in plain words, with the books and studies behind it. endurancr is open source, so you can read every line that touches your data. PRIVATE BY DESIGN No account, no server, no analytics, no ads, no tracking. Your plan stays on your device, and your runs live in Apple Health. FREE No subscription and no in-app purchases. endurancr is a training aid, not medical advice. Talk to a doctor before you start a new training plan.
Screenshots
Verdict
The clearest difference is in-app purchases: endurancr at none against HeartMath's 5. endurancr also leads on update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HeartMath sells 4 in-app purchases, starting at $39.00 per year. endurancr asks for nothing beyond the download.
HeartMath ships an update every 3 weeks, endurancr every 4 days. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.
| Parameter | HeartMath | endurancr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (4.6K ratings) — better | — |
| Positive reviews | 73.8% of reviews | — |
| Number of ratings | 4.6K — better | — |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 185 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | HeartMath Inc. | Sebastian Kaessinger |
Bugs and requests
HeartMath
Reported bugs
4 issues- Sensor connection issues on newer devices
- App crashes and freezes on iPhone 16 Pro
- Inaccurate heart rate and coherence readings
- Screen sleep behavior disrupting sessions
Requested features
5 requests- Add dark mode option
- Allow playing music/sounds during sessions
- Provide audio feedback on coherence levels
- Add session history customization and details
- Improve sensor compatibility with older devices
endurancr
Not enough reviews yet to summarise bugs or requests.
In-app purchases
HeartMath
- HeartMath Premium7 Days trial$39.001 Year
- HeartMath Premium7 Days trial$59.001 Year
- HeartMath Premium7 Days trial2 variants$79.001 Year
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- HeartMath Premium7 Days trial$99.991 Year
endurancr
No in-app purchases









