# JBLMS vs 알렌 eBook

The clearest difference is in-app purchases: JBLMS at none against 알렌 eBook's 8. JBLMS also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). 알렌 eBook's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price there is nothing between them.

Both are free to download. 알렌 eBook sells 8 one-off in-app purchases. JBLMS asks for nothing beyond the download.

JBLMS ships an update every 3 months, 알렌 eBook every 3 weeks. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | JBLMS | 알렌 eBook |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 15 MB | 64 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 12+ |
| Developer | [Knowledge-Tech. Co.](https://appshunter.io/developer/1231338878) | [Allens Library Ltd.](https://appshunter.io/developer/1684423586) |

## What reviewers say

### JBLMS

[App page](https://appshunter.io/ios/app/jblms/id1235361703)

This app serves as a lecture portal for flipped learning, offering group social networking features, diverse file uploads, member browsing, and robust search capabilities. It also includes attendance tracking and information collection tools to enhance the learning experience.

**Highlights:** Group social networking, Diverse file uploads, Group member browsing, Comprehensive search, Attendance tracking, Information collection

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is JBLMS free?

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

### Is 알렌 eBook free?

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

### Do JBLMS or 알렌 eBook have ads?

JBLMS shows ads; 알렌 eBook does not.

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

JBLMS ships an update every 3 months, and 알렌 eBook every 3 weeks. Most recently, JBLMS was updated on June 1, 2026 and 알렌 eBook on September 19, 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.*