# BOOKSCAN Checker vs CrisisRelay

The clearest difference is update cadence: CrisisRelay at every 2 days against BOOKSCAN Checker's every 4 months. 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 4 months, CrisisRelay every 2 days. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BOOKSCAN Checker | CrisisRelay |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 6 MB | 46 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BOOKSCAN Inc.](https://appshunter.io/developer/441217651) | [Cognitive Research Laboratories, Inc.](https://appshunter.io/developer/324078364) |

## 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


### CrisisRelay

[App page](https://appshunter.io/ios/app/crisisrelay/id6758833215)

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

**In-app purchases:** none


## Frequently asked questions

### Is BOOKSCAN Checker free?

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

### Is CrisisRelay free?

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

### Do BOOKSCAN Checker or CrisisRelay have ads?

Neither BOOKSCAN Checker nor CrisisRelay shows ads.

### Which is updated more often, BOOKSCAN Checker or CrisisRelay?

BOOKSCAN Checker ships an update every 4 months, and CrisisRelay every 2 days. Most recently, BOOKSCAN Checker was updated on November 1, 2026 and CrisisRelay on October 28, 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.*