# SOS Morse Flash vs World Clock with Aurora

The clearest difference is update cadence: SOS Morse Flash at daily against World Clock with Aurora's fortnightly. World Clock with Aurora's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.5). On price, ads 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.

SOS Morse Flash ships an update daily, World Clock with Aurora fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SOS Morse Flash | World Clock with Aurora |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Size | 5 MB | 26 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Aurange](https://appshunter.io/developer/1783985081) | [Hangik Lee](https://appshunter.io/developer/1893677570) |

## What reviewers say

### SOS Morse Flash

[App page](https://appshunter.io/ios/app/sos-morse-flash/id6748650782)

**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 SOS Morse Flash free?

SOS Morse Flash 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 SOS Morse Flash or World Clock with Aurora have ads?

Neither SOS Morse Flash nor World Clock with Aurora shows ads.

### Which is updated more often, SOS Morse Flash or World Clock with Aurora?

SOS Morse Flash ships an update daily, and World Clock with Aurora fortnightly. Most recently, SOS Morse Flash was updated on October 30, 2026 and World Clock with Aurora 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.*