# Atom Messenger vs 瑜瞬

The clearest difference is update cadence: Atom Messenger at every 3 weeks against 瑜瞬's every 6 weeks. 瑜瞬's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Atom Messenger ships an update every 3 weeks, 瑜瞬 every 6 weeks. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Atom Messenger | 瑜瞬 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 42 MB | 11 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [igloocy s.r.l.](https://appshunter.io/developer/1691843040) | [YouSun](https://appshunter.io/developer/1710927221) |

## What reviewers say

### Atom Messenger

[App page](https://appshunter.io/ios/app/atom-messenger/id6450101210)

**In-app purchases:** none


### 瑜瞬

[App page](https://appshunter.io/ios/app/id6756409961)

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

**In-app purchases:** none


## Frequently asked questions

### Is Atom Messenger free?

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

### Is 瑜瞬 free?

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

### Do Atom Messenger or 瑜瞬 have ads?

Neither Atom Messenger nor 瑜瞬 shows ads.

### Which is updated more often, Atom Messenger or 瑜瞬?

Atom Messenger ships an update every 3 weeks, and 瑜瞬 every 6 weeks. Most recently, Atom Messenger was updated on October 27, 2026 and 瑜瞬 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.*