# 크린에이드 vs Letter

The clearest difference is in-app purchases: 크린에이드 at none against Letter's 6. Letter's advantage is update cadence (every 5 days vs every 23 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Letter sells 6 one-off in-app purchases. 크린에이드 asks for nothing beyond the download.

크린에이드 ships an update every 23 months, Letter every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 크린에이드 | Letter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 92.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 5 days** |
| Size | 41 MB | 70 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Won Soo Choi](https://appshunter.io/developer/1545515600) | [VUNYO](https://appshunter.io/developer/1768332147) |

## What reviewers say

### 크린에이드

[App page](https://appshunter.io/ios/app/id1545515598)

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

**In-app purchases:** none


### Letter

[App page](https://appshunter.io/ios/app/letter-write-send-post-mail/id6786452084)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Credit | $1.99 | one-time |
| Credit | $4.99 | one-time |
| Credit | $6.99 | one-time |
| Credit | $9.99 | one-time |
| Credit | $19.99 | one-time |
| Credit | $49.99 | one-time |


## Frequently asked questions

### Is 크린에이드 free?

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

### Is Letter free?

Letter is free to download, with in-app purchases available.

### Do 크린에이드 or Letter have ads?

Neither 크린에이드 nor Letter shows ads.

### Which is updated more often, 크린에이드 or Letter?

크린에이드 ships an update every 23 months, and Letter every 5 days. Most recently, 크린에이드 was updated on October 24, 2026 and Letter 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.*