# SleepBytes vs Sleep Harmony

The clearest difference is iOS requirement: SleepBytes at 10.0 against Sleep Harmony's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

SleepBytes ships an update every 3 months, Sleep Harmony every 7 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SleepBytes | Sleep Harmony |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Size | 66 MB | 144 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SiliconeSignal Technologies](https://appshunter.io/developer/1559911870) | [Ergomotion, Inc.](https://appshunter.io/developer/765697157) |

## What reviewers say

### SleepBytes

[App page](https://appshunter.io/ios/app/sleepbytes/id1660749766)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleep Harmony

[App page](https://appshunter.io/ios/app/sleep-harmony/id6743784636)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepBytes free?

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

### Is Sleep Harmony free?

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

### Do SleepBytes or Sleep Harmony have ads?

Neither SleepBytes nor Sleep Harmony shows ads.

### Which is updated more often, SleepBytes or Sleep Harmony?

SleepBytes ships an update every 3 months, and Sleep Harmony every 7 months. Most recently, SleepBytes was updated on October 18, 2026 and Sleep Harmony on October 10, 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.*