# SleepBytes vs GutAgent

The clearest difference is in-app purchases: SleepBytes at none against GutAgent's 1. SleepBytes also leads on iOS requirement (10.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. GutAgent sells 1 in-app purchase, starting at $2.99 per month. SleepBytes asks for nothing beyond the download.

SleepBytes ships an update every 3 months, GutAgent every 6 months. The most recent releases landed on November 7, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SleepBytes | GutAgent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Size | 66 MB | 52 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [SiliconeSignal Technologies](https://appshunter.io/developer/1559911870) | [CHUNGCHIANG HSU](https://appshunter.io/developer/1807207882) |

## What reviewers say

### SleepBytes

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

**Features:** macOS Compatibility

**In-app purchases:** none


### GutAgent

[App page](https://appshunter.io/ios/app/gutagent-health-assistant/id6758578854)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Health Insights | $2.99 | per month |


## Frequently asked questions

### Is SleepBytes free?

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

### Is GutAgent free?

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

### Do SleepBytes or GutAgent have ads?

Neither SleepBytes nor GutAgent shows ads.

### Which is updated more often, SleepBytes or GutAgent?

SleepBytes ships an update every 3 months, and GutAgent every 6 months. Most recently, SleepBytes was updated on November 7, 2026 and GutAgent on October 28, 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.*