# HeartBond vs Rhythm LightScore

The clearest difference is ratings volume: Rhythm LightScore at 5 against HeartBond's 1. HeartBond's advantage is iOS requirement (16.0 vs 18.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for HeartBond against 5.0 for Rhythm LightScore. That said, the two scores are not equally well evidenced: Rhythm LightScore has 5 ratings behind it against 1, so its average is the more settled of the two.

HeartBond ships an update every 2 days, Rhythm LightScore every 4 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | HeartBond | Rhythm LightScore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/heartbond/id6449156557/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/rhythm-lightscore/id6799837500/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free | Free |
| Size | 11 MB | 26 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Zhang](https://appshunter.io/developer/1687853569) | [Rhythm Innovations, Inc.](https://appshunter.io/developer/6799837502) |

## What reviewers say

### HeartBond

[App page](https://appshunter.io/ios/app/heartbond/id6449156557)

Visualize your heart rate, HRV, and sleep stages with this free companion app. Seamlessly sync data between your iPhone and Mac, with intuitive gestures and customizable interfaces. Track your health journey across your Apple ecosystem.

**Highlights:** Heart Rate & HRV Insights, Sleep Stage Visualization, Weight Tracking, Smart Sync Control, Apple Ecosystem Integration, Customizable Interface, Dark Mode Support

**Features:** Vision Pro support

**In-app purchases:** none


### Rhythm LightScore

[App page](https://appshunter.io/ios/app/rhythm-lightscore/id6799837500)

This app provides a daily "LightScore" based on your exposure to daylight, its consistency, and your pre-bedtime phone use. It offers insights into your light habits and suggests improvements for better well-being.

**Highlights:** Daily LightScore out of 100, Measures Light Time, Consistency, and Dark Time, Integrates with Apple Watch Health data, Uses phone camera as a light meter, Visualizes daily progress with Sol character, Sunset photo capture and sharing

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is HeartBond free?

HeartBond is free to download, with no in-app purchases.

### Is Rhythm LightScore free?

Rhythm LightScore is free to download, with no in-app purchases.

### Which has better reviews, HeartBond or Rhythm LightScore?

HeartBond and Rhythm LightScore are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do HeartBond or Rhythm LightScore have ads?

Neither HeartBond nor Rhythm LightScore shows ads.

### Which is updated more often, HeartBond or Rhythm LightScore?

HeartBond ships an update every 2 days, and Rhythm LightScore every 4 days. Most recently, HeartBond was updated on November 3, 2026 and Rhythm LightScore on November 6, 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.*