# AmbilightSync vs SleepWarning

The clearest difference is in-app purchases: AmbilightSync at none against SleepWarning's 1. SleepWarning's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

AmbilightSync ships an update every 3 weeks, SleepWarning every 4 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | AmbilightSync | SleepWarning |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 4 MB | 7 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Linus Kneser](https://appshunter.io/developer/1812123909) | [Tilo Greiner](https://appshunter.io/developer/1740838965) |

## What reviewers say

### AmbilightSync

[App page](https://appshunter.io/ios/app/ambilightsync/id6745416591)

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepWarning

[App page](https://appshunter.io/ios/app/sleepwarning/id6758070039)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepWarning | $1.99 | one-time |


## Frequently asked questions

### Is AmbilightSync free?

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

### Is SleepWarning free?

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

### Do AmbilightSync or SleepWarning have ads?

Neither AmbilightSync nor SleepWarning shows ads.

### Which is updated more often, AmbilightSync or SleepWarning?

AmbilightSync ships an update every 3 weeks, and SleepWarning every 4 days. Most recently, AmbilightSync was updated on October 1, 2026 and SleepWarning on October 4, 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.*