# PIRATES AR vs Bookshelf Diary

The clearest difference is in-app purchases: PIRATES AR at none against Bookshelf Diary's 3. PIRATES AR also leads on iOS requirement (8.0 vs 16.0). Bookshelf Diary's advantage is update cadence (every 9 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Bookshelf Diary sells 3 in-app purchases, starting at $2.99 per month. PIRATES AR asks for nothing beyond the download.

PIRATES AR ships an update monthly, Bookshelf Diary every 9 days. The most recent releases landed on November 2, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | PIRATES AR | Bookshelf Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bookshelf-diary/id6758018882/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Free |
| Size | 378 MB | 135 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paidotribo](https://appshunter.io/developer/398196955) | [WANG MEI TING](https://appshunter.io/developer/1870321612) |

## What reviewers say

### PIRATES AR

[App page](https://appshunter.io/ios/app/pirates-ar/id1071787095)

**Features:** Vision Pro support

**In-app purchases:** none


### Bookshelf Diary

[App page](https://appshunter.io/ios/app/bookshelf-diary/id6758018882)

Organize your book collection with ease using barcode scanning, batch entry for series, and progress tracking. Manage wishlists, customize shelf arrangements, and back up your data locally or via the cloud. Supports offline use and offers a dark mode.

**Highlights:** ISBN barcode scanning, Batch entry for series, Track owned and missing books, Wishlist management, Customizable shelf sorting, Excel export/import, Cloud backup, Offline functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Subscription | $2.99 | per month |
| Pro 訂閱版 | $29.99 | per year |
| Plus 永久版 | $7.99 | one-time |


## Frequently asked questions

### Is PIRATES AR free?

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

### Is Bookshelf Diary free?

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

### Do PIRATES AR or Bookshelf Diary have ads?

Neither PIRATES AR nor Bookshelf Diary shows ads.

### Which is updated more often, PIRATES AR or Bookshelf Diary?

PIRATES AR ships an update monthly, and Bookshelf Diary every 9 days. Most recently, PIRATES AR was updated on November 2, 2026 and Bookshelf Diary on November 1, 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.*