# Biorhythm Alertness vs HeartMath

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.

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.

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.

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.

## The numbers

| Metric | Biorhythm Alertness | HeartMath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/biorhythm-alertness/id1351359147/reviews) | **[4.9 (4.7K ratings)](https://appshunter.io/ios/app/heartmath/id6446414998/reviews)** |
| Number of ratings | 4 | **4.7K** |
| Positive reviews | 0.0% of reviews | **73.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 5 MB | 185 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Bodnar Marin](https://appshunter.io/developer/1344307163) | [HeartMath Inc.](https://appshunter.io/developer/482739914) |

## What reviewers say

### Biorhythm Alertness

[App page](https://appshunter.io/ios/app/biorhythm-alertness/id1351359147)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biorhythm Alerter | $0.99 | one-time |


### HeartMath

[App page](https://appshunter.io/ios/app/heartmath/id6446414998)

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:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeartMath Premium | $39.00 | per year |
| HeartMath Premium | $59.00 | per year |
| HeartMath Premium | $79.00 | per year |
| HeartMath Premium | $99.99 | per year |

**What reviewers like**

- 🚀 Huge improvement over previous app
- 👍 Easy to use and highly recommended
- 💡 Loaded with HeartMath techniques and courses
- 👍 Powerful tool for nervous system balance and anxiety reduction
- 👍 Helps achieve a better mental state

**What reviewers complain about**

- 🐛 Connectivity issues with sensor
- 🐛 Sensor not compatible with older devices
- 🐛 App crashes and freezes on newer devices
- 🐛 Inaccurate heart rate and coherence readings
- 🐛 Disruptive screen sleep behavior during sessions

**Reported bugs**

- 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**

- 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


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*