Comparison

HeartMath vs MUUM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Real-time HRV Coherence Measurement
  • Coherence Training
  • Scientifically Validated Techniques
  • Guided Learning Sessions
  • Progress Tracking
  • Heart-Brain Coherence Benefits
Features
Read full description

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.

About

MUUM

Features
Read full description

MUUM: Your daily breathing ritual What is MUUM? A breathing app for daily life. Short rituals - one to fifteen minutes - that bring your breath back through the nose. Designed in Switzerland by engineers from EPFL and ETH Zürich. Why nasal breathing? Most of us breathe through the mouth without realizing it - at night, at work, on a run. The nose is built to filter, warm, and slow the breath. The mouth is not. MUUM guides you back to nasal breathing through audio sessions, real-time biofeedback, and slow breathing patterns. Three rituals, three moments Energy: short activating sessions for the morning or a midday reset. Calm: slow nasal breathing to wind down before sleep or between meetings. Focus: structured patterns before work, study, or sport. - Garmin & Apple Health integration - Live biofeedback (Heart Rate Variability, Heart Rate) - Guided sessions from 1 to 15 minutes - Real-time breath tracking with visual feedback - Coherence breathing at 6 breaths per minute - New rituals added every month - Progress tracking A physical and digital ritual MUUM also makes scented nasal breathing strips, sold in pharmacies across Switzerland and France. The app works on its own, or alongside the strips for a full sensory experience with subtle scents - lavender, sandalwood, or fragrance-free. Also used by athletes MUUM is used by ATP tennis players, World Tour cyclists, and ultra-trail runners preparing for major events. Our nasal strips product line has shipped over 200,000 units. Designed in Switzerland MUUM is a Swiss breathing brand, founded in 2024 in Nyon. Our products are built by engineers from EPFL and ETH Zürich. Subscription MUUM offers an optional premium subscription with full access to the rituals library and advanced biofeedback features. Auto-renews unless canceled at least 24 hours before the end of the current period. Manage in your App Store account settings. Privacy: muum.app/privacy-policy Terms: muum.app/terms-of-service Support: hello@muum.app Breathe better. Your daily breathing ritual. MUUM is a wellness app, not a medical device.

Screenshots

HeartMath4 screens
MUUM3 screens

Verdict

The call

The clearest difference is iOS requirement: MUUM at 18.2 against HeartMath's 26.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HeartMath sells 4 in-app purchases, starting at $39.00 per year and MUUM sells 4 in-app purchases, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

HeartMath ships an update every 3 weeks, MUUM every 2 weeks. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

Scorecard1 real difference · 9 level
HeartMath versus MUUM: the parameters behind the verdict, then further details
ParameterHeartMathMUUM
PriceFreeFree
Rating4.9 (4.6K ratings) — better—
Positive reviews73.1% of reviews—
Number of ratings4.6K — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS26.018.2 — better
Further details — not scored
Size185 MB306 MB
Age rating4+4+
DeveloperHeartMath Inc.MUUM

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

MUUM

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

HeartMath

Subscriptions4
  • HeartMath Premium7 Days trial$39.001 Year
  • HeartMath Premium7 Days trial$59.001 Year
  • HeartMath Premium7 Days trial2 variants$79.001 Year
Show 1 more
  • HeartMath Premium7 Days trial$99.991 Year
4 purchases

MUUM

Subscriptions4
  • MUUM$10.001 Month
  • MUUM$16.991 Month
  • MUUM3 Days trial$29.991 Year
Show 1 more
  • MUUM3 Days trial$69.991 Year

Questions

Is HeartMath free?
HeartMath is free to download, with in-app purchases available.
Is MUUM free?
MUUM is free to download, with in-app purchases available.
Do HeartMath or MUUM have ads?
Neither HeartMath nor MUUM shows ads.
Which is updated more often, HeartMath or MUUM?
HeartMath ships an update every 3 weeks, and MUUM every 2 weeks. Most recently, HeartMath was updated on September 25, 2026 and MUUM on September 22, 2026.

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