# CypherAir vs Erosion 蚀

The clearest difference is update cadence: CypherAir at every 2 days against Erosion 蚀's fortnightly. CypherAir also leads on device support (4 vs 1). Erosion 蚀's advantage is iOS requirement (17.6 vs 26.5). 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.

CypherAir ships an update every 2 days, Erosion 蚀 fortnightly. Both last shipped on October 19, 2026.

## The numbers

| Metric | CypherAir | Erosion 蚀 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 79 MB | 1 MB |
| Requires iOS | 26.5 | **17.6** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [康 陈](https://appshunter.io/developer/1862348574) | [名哲 张](https://appshunter.io/developer/1879661087) |

## What reviewers say

### CypherAir

[App page](https://appshunter.io/ios/app/cypherair/id6760628384)

**In-app purchases:** none


### Erosion 蚀

[App page](https://appshunter.io/ios/app/erosion/id6761682068)

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

**In-app purchases:** none


## Frequently asked questions

### Is CypherAir free?

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

### Is Erosion 蚀 free?

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

### Do CypherAir or Erosion 蚀 have ads?

Neither CypherAir nor Erosion 蚀 shows ads.

### Which is updated more often, CypherAir or Erosion 蚀?

CypherAir ships an update every 2 days, and Erosion 蚀 fortnightly. Most recently, CypherAir was updated on October 19, 2026 and Erosion 蚀 on October 19, 2026.

---

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