# ISBN vs Chant Tools

The clearest difference is price: Chant Tools at Free against ISBN's $0.99. Chant Tools also leads on update cadence (every 3 weeks vs every 8 months). ISBN's advantage is review sentiment (67% vs 42%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Chant Tools is free to download; ISBN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ISBN ships an update every 8 months, Chant Tools every 3 weeks. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | ISBN | Chant Tools |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.9 (32 ratings)](https://appshunter.io/ios/app/chant-tools/id1225329409/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | **66.7% of reviews** | 41.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 38 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CROMBEZ Emmanuel](https://appshunter.io/developer/375656695) | [Benjamin Bloomfield](https://appshunter.io/developer/1225329408) |

## What reviewers say

### ISBN

[App page](https://appshunter.io/ios/app/isbn/id1061626540)

Create and manage a personal book inventory using ISBN codes. Organize books with custom flags, notes, and contact associations. Export your library data to CSV for use in spreadsheets.

**Highlights:** Book inventory management, ISBN scanning/entry, Customizable flags for categorization, Free text notes per book, Attach books to contacts, CSV export for spreadsheets

**In-app purchases:** none


### Chant Tools

[App page](https://appshunter.io/ios/app/chant-tools/id1225329409)

Access Gregorian Mass propers and ordinaries offline. This utility provides transcriptions from sources like Liber Usualis and GregoBase, with options to correct errors directly on the GregoBase platform.

**Highlights:** Offline Mass Propers, Gregorian Mass Ordinaries, Liber Usualis content, GregoBase transcriptions, Error correction via GregoBase

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

**In-app purchases:** none


## Frequently asked questions

### Is ISBN free?

ISBN costs $0.99, with no in-app purchases.

### Is Chant Tools free?

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

### Do ISBN or Chant Tools have ads?

Neither ISBN nor Chant Tools shows ads.

### Which is updated more often, ISBN or Chant Tools?

ISBN ships an update every 8 months, and Chant Tools every 3 weeks. Most recently, ISBN was updated on September 10, 2026 and Chant Tools on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*