# HeartMath vs Seeded Sound

HeartMath and Seeded Sound both sit at 4.9 stars, but that hides the real split: 100% of Seeded Sound's written reviews are positive against 74% of HeartMath's. Seeded Sound also leads on update cadence (every 10 days vs every 3 weeks) and iOS requirement (14.0 vs 26.0). HeartMath's advantage is ratings volume (4.7K vs 21). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. HeartMath sells 4 in-app purchases, starting at $39.00 per year and Seeded Sound sells 6 in-app purchases, starting at $11.00 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for HeartMath against 5.0 for Seeded Sound. That said, the two scores are not equally well evidenced: HeartMath has 4.7K ratings behind it against 21, so its average is the more settled of the two. Written reviews are what separate them: 74% of HeartMath's written reviews are positive against 100% of Seeded Sound's.

HeartMath ships an update every 3 weeks, Seeded Sound every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | HeartMath | Seeded Sound |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (4.7K ratings)](https://appshunter.io/ios/app/heartmath/id6446414998/reviews) | **[5.0 (21 ratings)](https://appshunter.io/ios/app/seeded-sound/id6748516597/reviews)** |
| Number of ratings | **4.7K** | 21 |
| Positive reviews | 73.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 185 MB | 59 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HeartMath Inc.](https://appshunter.io/developer/482739914) | [Seeded Sound Inc.](https://appshunter.io/developer/1826036024) |

## What reviewers say

### 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


### Seeded Sound

[App page](https://appshunter.io/ios/app/seeded-sound/id6748516597)

This app uses neuroscience-backed audio with subliminal affirmations and calibrated sound frequencies to reprogram subconscious thoughts, habits, and emotional responses. It aims to enhance focus, reduce stress, improve sleep, and promote emotional regulation effortlessly during daily activities.

**Highlights:** Subliminal affirmations below conscious hearing, Precision-calibrated sound frequencies, Neurotechnology for emotional regulation, Stress relief and focus enhancement, Sleep optimization, Habit reprogramming, Passive listening during daily activities

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Monthly Plan | $11.00 | per month |
| Family Monthly Plan | $14.00 | per month |
| Individual Yearly Plan | $110.99 | per year |
| Family Yearly Plan | $139.00 | per year |
| Lifetime Individual Plan | $189.00 | one-time |
| Lifetime Family Plan | $249.00 | one-time |


## Frequently asked questions

### Is HeartMath free?

HeartMath is free to download, with in-app purchases available.

### Is Seeded Sound free?

Seeded Sound is free to download, with in-app purchases available.

### Which has better reviews, HeartMath or Seeded Sound?

Seeded Sound is rated higher. HeartMath averages 4.9 out of 5 from 4.7K ratings, while Seeded Sound averages 5.0 from 21 ratings.

### Do HeartMath or Seeded Sound have ads?

Neither HeartMath nor Seeded Sound shows ads.

### Which is updated more often, HeartMath or Seeded Sound?

HeartMath ships an update every 3 weeks, and Seeded Sound every 10 days. Most recently, HeartMath was updated on October 24, 2026 and Seeded Sound 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.*