# SleepBytes vs NightWatch

The clearest difference is in-app purchases: SleepBytes at none against NightWatch's 1. SleepBytes also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.0). NightWatch's advantage is update cadence (monthly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. NightWatch sells 1 one-off in-app purchase. SleepBytes asks for nothing beyond the download.

SleepBytes ships an update every 3 months, NightWatch monthly. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | SleepBytes | NightWatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Size | 66 MB | 6 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SiliconeSignal Technologies](https://appshunter.io/developer/1559911870) | [Pummel Pty Ltd](https://appshunter.io/developer/1101016793) |

## What reviewers say

### SleepBytes

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

**Features:** macOS Compatibility

**In-app purchases:** none


### NightWatch

[App page](https://appshunter.io/ios/app/nightwatch-sleep-tracker/id6469570238)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is SleepBytes free?

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

### Is NightWatch free?

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

### Do SleepBytes or NightWatch have ads?

NightWatch shows ads; SleepBytes does not.

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

SleepBytes ships an update every 3 months, and NightWatch monthly. Most recently, SleepBytes was updated on October 18, 2026 and NightWatch on October 3, 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.*