# DLT Library vs ARNBOOK

The clearest difference is in-app purchases: DLT Library at none against ARNBOOK's 17. DLT Library also leads on iOS requirement (8.0 vs 15.5). ARNBOOK's advantage is update cadence (every 3 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. ARNBOOK sells 17 one-off in-app purchases. DLT Library asks for nothing beyond the download.

DLT Library ships an update every 7 months, ARNBOOK every 3 weeks. The most recent releases landed on December 6, 2025 and September 23, 2026 respectively.

## The numbers

| Metric | DLT Library | ARNBOOK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.2 (5 ratings)](https://appshunter.io/ios/app/arnbook/id1543409494/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 42.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 117 MB |
| Requires iOS | **8.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Department of Land Transport Thailand](https://appshunter.io/developer/1437216014) | [ARN BOOK COMPANY LIMITED](https://appshunter.io/developer/1543409856) |

## What reviewers say

### DLT Library

[App page](https://appshunter.io/ios/app/dlt-library/id1376509225)

**Features:** macOS Compatibility

**In-app purchases:** none


### ARNBOOK

[App page](https://appshunter.io/ios/app/arnbook/id1543409494)

This app facilitates the buying and selling of both physical books and e-books in one place. It aims to support writers and publishers through digital channels, making it easier for readers to discover books they'll love. Features include pre-orders, print-on-demand, and a unified shipping service for books from different publishers.

**Highlights:** Buy physical books and e-books, Support writers and publishers, Pre-order books with premium benefits, Print-on-demand service, Read samples before buying, Unified shipping for multiple publishers, Loyalty program and discounts

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

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| สินค้าราคา 109 บาท | $2.99 | one-time |
| สินค้าราคา 129 บาท | $3.99 | one-time |
| หนังสือราคา 249 บาท | $6.99 | one-time |
| สินค้าราคา 249 บาท | $6.99 | one-time |
| หนังสือราคา 299 บาท | $7.99 | one-time |
| หนังสือราคา 349 บาท | $9.99 | one-time |
| สินค้าราคา 349 บาท | $9.99 | one-time |
| สินค้าราคา 399 บาท | $9.99 | one-time |
| หนังสือราคา 329 บาท | $10.99 | one-time |
| หนังสือราคา 399 บาท | $10.99 | one-time |
| หนังสือราคา 429 บาท | $11.99 | one-time |
| สินค้าราคา 429 บาท | $11.99 | one-time |
| หนังสือราคา 399 บาท | $12.99 | one-time |
| หนังสือราคา 479 บาท | $12.99 | one-time |
| สินค้าราคา 499 บาท | $12.99 | one-time |
| หนังสือราคา 449 บาท | $14.99 | one-time |
| หนังสือราคา 549 บาท | $14.99 | one-time |


## Frequently asked questions

### Is DLT Library free?

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

### Is ARNBOOK free?

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

### Do DLT Library or ARNBOOK have ads?

Neither DLT Library nor ARNBOOK shows ads.

### Which is updated more often, DLT Library or ARNBOOK?

DLT Library ships an update every 7 months, and ARNBOOK every 3 weeks. Most recently, DLT Library was updated on December 6, 2025 and ARNBOOK on September 23, 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.*