# Flash Control Disco Alarm vs World Clock with Aurora

The clearest difference is ads: World Clock with Aurora at none against Flash Control Disco Alarm's shown. World Clock with Aurora also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price 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.

## The numbers

| Metric | Flash Control Disco Alarm | World Clock with Aurora |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Fortnightly |
| Size | 24 MB | 26 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Caner Kenan Ozdemir](https://appshunter.io/developer/1857834727) | [Hangik Lee](https://appshunter.io/developer/1893677570) |

## What reviewers say

### Flash Control Disco Alarm

[App page](https://appshunter.io/ios/app/flash-control-disco-alarm/id6758649042)

**Features:** macOS Compatibility

**In-app purchases:** none


### World Clock with Aurora

[App page](https://appshunter.io/ios/app/world-clock-with-aurora/id6762291120)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Control Disco Alarm free?

Flash Control Disco Alarm is free to download, with no in-app purchases.

### Is World Clock with Aurora free?

World Clock with Aurora is free to download, with no in-app purchases.

### Do Flash Control Disco Alarm or World Clock with Aurora have ads?

Flash Control Disco Alarm shows ads; World Clock with Aurora does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*