Comparison

Biorhythm Alertness vs HeartMath

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

Head to head
About

Biorhythm Alertness

This app tracks your physical, emotional, intellectual, and intuitive biological cycles. It provides visual graphs of these rhythms and notifies you of critical days when your vulnerability is highest. Easily manage multiple user profiles for family and friends.

Highlights
  • Multi-user profile support
  • Visualizations of physical, emotional, intellectual, and intuitive rhythms
  • Critical day notifications
  • Toggle display for individual rhythm curves
  • Simple registration with name and birthdate
  • User-friendly interface
Features
Read full description

Our life is affected by rhythmic biological cycles (biorhythms) that move in sinus curves starting at your birth and continuing throughout your whole life, influencing you in many ways. The four rhythms of particular importance are: Physical, Emotional, Intellectual and Intuitive. Critical Day is a day of a particular rhythm when it crosses the X-Axis from the top down. The critical phase is the most vulnerable time for an individual, and the abilities associated with a particular rhythm can be very low.At this moment you receive a notification. Key Features: Multi-User Functionality: Biorhythm Alertness supports multiple user profiles, allowing family members, friends, or colleagues to track their biorhythms effortlessly. Simply enter your name and birthdate to create a personalized profile and gain insights tailored to your unique rhythms. Visualize Your Rhythms: Dive into the fascinating world of biorhythms with Biorhythm Alertness's visually engaging graphs. By displaying your physical, intellectual, emotional, and intuitive curves, you can gain a deeper understanding of how these cycles impact your daily life. Toggle Display: With the convenience of dedicated buttons, you have the power to toggle the display of each biorhythm curve individually. Whether you want to focus on your physical well-being, intellectual prowess, emotional balance, or intuitive insights, Biorhythm Alertness allows you to examine them one at a time. Simple Registration: Biorhythm Alertness values your time and privacy. The registration process is quick and straightforward, requiring only your name and birthdate to create a user profile. Your personal information is securely stored, ensuring the utmost confidentiality. User-Friendly Interface: Biorhythm Alertness prides itself on its intuitive and user-friendly interface. Navigating through the app is effortless, making it accessible to users of all levels of tech-savviness. Whether you're a seasoned biorhythm enthusiast or new to the concept, you'll find Biorhythm Alertness a breeze to use.

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.

Screenshots

Biorhythm Alertness1 screens
HeartMath4 screens

Verdict

The call

The clearest difference is review sentiment: HeartMath at 74% against Biorhythm Alertness's 0%. HeartMath also leads on rating (4.9 vs 2.0) and ratings volume (4.7K vs 4). Biorhythm Alertness's advantage is monetization model (free vs freemium) and device support (3 vs 1). 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. Biorhythm Alertness sells 1 one-off in-app purchase and HeartMath sells 4 in-app purchases, starting at $39.00 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

HeartMath holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: HeartMath has 4.7K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Biorhythm Alertness's written reviews are positive against 74% of HeartMath's.

UpkeepUpdate frequency

Biorhythm Alertness ships an update every 5 weeks, HeartMath every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Biorhythm Alertness versus HeartMath: the parameters behind the verdict, then further details
ParameterBiorhythm AlertnessHeartMath
PriceFreeFree
Rating2.0 (4 ratings)4.9 (4.7K ratings) — better
Positive reviews0.0% of reviews73.8% of reviews — better
Number of ratings44.7K — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.0 — better26.0
Further details — not scored
Size5 MB185 MB
Age rating4+4+
DeveloperBodnar MarinHeartMath Inc.

Customer experience

Biorhythm Alertness

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

HeartMath

All ratings4,564 ratings
Positive96.9%
Neutral1.8%
Negative1.3%
Written reviews172 reviews
Positive73.8%
Neutral5.2%
Negative20.9%

Bugs and requests

Biorhythm Alertness

Not enough reviews yet to summarise bugs or 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

In-app purchases

1 purchases

Biorhythm Alertness

One-time1
  • Biorhythm Alerter$0.99
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

Questions

Is Biorhythm Alertness free?
Biorhythm Alertness is free to download, with in-app purchases available.
Is HeartMath free?
HeartMath is free to download, with in-app purchases available.
Which has better reviews, Biorhythm Alertness or HeartMath?
HeartMath is rated higher. Biorhythm Alertness averages 2.0 out of 5 from 4 ratings, while HeartMath averages 4.9 from 4.7K ratings.
Do Biorhythm Alertness or HeartMath have ads?
Neither Biorhythm Alertness nor HeartMath shows ads.
Which is updated more often, Biorhythm Alertness or HeartMath?
Biorhythm Alertness ships an update every 5 weeks, and HeartMath every 3 weeks. Most recently, Biorhythm Alertness was updated on October 21, 2026 and HeartMath on October 24, 2026.

Other comparisons