# Unread. vs Erosion 蚀

The clearest difference is price: Erosion 蚀 at Free against Unread.'s $0.99. Erosion 蚀 also leads on update cadence (fortnightly vs every 5 months). Unread.'s advantage is iOS requirement (15.6 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Erosion 蚀 is free to download; Unread. costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Unread. ships an update every 5 months, Erosion 蚀 fortnightly. The most recent releases landed on August 24, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Unread. | Erosion 蚀 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unread/id6748683167/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 3 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [均伟 朱](https://appshunter.io/developer/1805502239) | [名哲 张](https://appshunter.io/developer/1879661087) |

## What reviewers say

### Unread.

[App page](https://appshunter.io/ios/app/unread/id6748683167)

This app provides a private space to write messages and record voice notes to people you can no longer communicate with. It's designed for emotional processing, closure, and remembrance, offering a sanctuary for unspoken words without any expectation of replies or delivery.

**Highlights:** Private message writing, Voice memo recording, No read receipts or replies, Device-only data storage, Immersive chat themes, Emotional conversation deletion options

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

**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 Unread. free?

Unread. costs $0.99, with no in-app purchases.

### Is Erosion 蚀 free?

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

### Do Unread. or Erosion 蚀 have ads?

Neither Unread. nor Erosion 蚀 shows ads.

### Which is updated more often, Unread. or Erosion 蚀?

Unread. ships an update every 5 months, and Erosion 蚀 fortnightly. Most recently, Unread. was updated on August 24, 2026 and Erosion 蚀 on September 14, 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.*