# SleepBytes vs Sleeptock

The clearest difference is in-app purchases: SleepBytes at none against Sleeptock's 4. SleepBytes also leads on iOS requirement (10.0 vs 12.4). Sleeptock's advantage is update cadence (every 9 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Sleeptock sells 4 one-off in-app purchases. SleepBytes asks for nothing beyond the download.

SleepBytes ships an update every 3 months, Sleeptock every 9 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | SleepBytes | Sleeptock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 66 MB | 18 MB |
| Requires iOS | **10.0** | 12.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SiliconeSignal Technologies](https://appshunter.io/developer/1559911870) | [scienceprod](https://appshunter.io/developer/1683570072) |

## What reviewers say

### SleepBytes

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleeptock

[App page](https://appshunter.io/ios/app/sleeptock/id6448126125)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Start Delay | $0.99 | one-time |
| Presets | $0.99 | one-time |
| Sound Pack | $0.99 | one-time |
| Bundle Offer | $1.99 | one-time |


## Frequently asked questions

### Is SleepBytes free?

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

### Is Sleeptock free?

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

### Do SleepBytes or Sleeptock have ads?

Neither SleepBytes nor Sleeptock shows ads.

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

SleepBytes ships an update every 3 months, and Sleeptock every 9 days. Most recently, SleepBytes was updated on November 7, 2026 and Sleeptock on November 7, 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.*