# 알렌 eBook vs PsyKMLE

The clearest difference is price: 알렌 eBook at Free against PsyKMLE's $17.99. 알렌 eBook also leads on update cadence (every 3 weeks vs every 9 months) and iOS requirement (16.0 vs 18.6). PsyKMLE's advantage is in-app purchases (none vs 8). On ads and device support there is nothing between them.

알렌 eBook is free to download; PsyKMLE costs $17.99 up front. 알렌 eBook sells 8 one-off in-app purchases. PsyKMLE asks for nothing beyond the download.

알렌 eBook ships an update every 3 weeks, PsyKMLE every 9 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 알렌 eBook | PsyKMLE |
| --- | --- | --- |
| Price | **Free** | $17.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Size | 64 MB | 2 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [Allens Library Ltd.](https://appshunter.io/developer/1684423586) | [Jaisung Noh](https://appshunter.io/developer/1331337007) |

## What reviewers say

### 알렌 eBook

[App page](https://appshunter.io/ios/app/ebook/id6448324306)

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2500 알렌캐시 | $1.99 | one-time |
| 5000 알렌캐시 | $3.99 | one-time |
| 10000 알렌캐시 | $8.99 | one-time |
| 20000 알렌캐시 | $17.99 | one-time |
| 30000 알렌캐시 | $24.99 | one-time |
| 50000 알렌캐시 | $39.99 | one-time |
| 70000 알렌캐시 | $59.99 | one-time |
| 100000 알렌캐시 | $89.99 | one-time |


### PsyKMLE

[App page](https://appshunter.io/ios/app/psykmle-all/id6749499553)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 알렌 eBook free?

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

### Is PsyKMLE free?

PsyKMLE costs $17.99, with no in-app purchases.

### Do 알렌 eBook or PsyKMLE have ads?

Neither 알렌 eBook nor PsyKMLE shows ads.

### Which is updated more often, 알렌 eBook or PsyKMLE?

알렌 eBook ships an update every 3 weeks, and PsyKMLE every 9 months. Most recently, 알렌 eBook was updated on October 6, 2026 and PsyKMLE on October 4, 2026.

---

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