# BOOKSCAN Checker vs Shared pocket book markdown

The clearest difference is update cadence: Shared pocket book markdown at every 8 days against BOOKSCAN Checker's every 3 months. BOOKSCAN Checker's advantage is iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BOOKSCAN Checker ships an update every 3 months, Shared pocket book markdown every 8 days. The most recent releases landed on September 19, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | BOOKSCAN Checker | Shared pocket book markdown |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 6 MB | 12 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BOOKSCAN Inc.](https://appshunter.io/developer/441217651) | [Takashi Nosaka](https://appshunter.io/developer/627947795) |

## What reviewers say

### BOOKSCAN Checker

[App page](https://appshunter.io/ios/app/bookscan-checker/id461348808)

Scan book ISBN barcodes with your iPhone or iPod Touch camera to retrieve book and publisher information. It's designed for books that are out of copyright, public domain, or for which you have obtained permission to use.

**Highlights:** Scan ISBN barcodes using device camera, Display book information, Display publisher information, Supports iPhone, iPad, and iPod Touch, Free to download and use

**In-app purchases:** none


### Shared pocket book markdown

[App page](https://appshunter.io/ios/app/shared-pocket-book-markdown/id6443658507)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BOOKSCAN Checker free?

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

### Is Shared pocket book markdown free?

Shared pocket book markdown is free to download, with no in-app purchases.

### Do BOOKSCAN Checker or Shared pocket book markdown have ads?

Neither BOOKSCAN Checker nor Shared pocket book markdown shows ads.

### Which is updated more often, BOOKSCAN Checker or Shared pocket book markdown?

BOOKSCAN Checker ships an update every 3 months, and Shared pocket book markdown every 8 days. Most recently, BOOKSCAN Checker was updated on September 19, 2026 and Shared pocket book markdown on June 10, 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.*