ISBN vs Chant Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISBN
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.
- Book inventory management
- ISBN scanning/entry
- Customizable flags for categorization
- Free text notes per book
- Attach books to contacts
- CSV export for spreadsheets
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Cette application permet de faire une liste de livres à partir de leurs codes ISBN. Chaque livre peut avoir 10 drapeaux pour les classer, un texte libre et être attaché à un contact. L'application peut servir à faire l'inventaire de sa bibliothèque, ou la liste des livres prêtés, ou tout ce que vous pourrez vouloir. Vous pourrez exportez votre base de livre en CSV pour l'intégrer dans un tableur.
Chant Tools
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.
- Offline Mass Propers
- Gregorian Mass Ordinaries
- Liber Usualis content
- GregoBase transcriptions
- Error correction via GregoBase
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Offline Mass Propers This app is an offline version of the chant tools available at http://bbloomf.github.io/jgabc/ It is mostly intended to be useful for containing the Gregorian Mass propers as well as the Gregorian Mass ordinaries as found in the Liber Usualis, and transcribed on GregoBase (http://gregobase.selapa.net) and there may be some mistakes in the chant. If you notice any, they can be corrected in GregoBase (if you go to http://bbloomf.github.io/jgabc/propers.html and find the chant with the mistake, you can click the link above the chant on the left side to get to the GregoBase version of the chant, and edit it there to fix it, or request that it be fixed.)
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ISBN | Chant Tools |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 3.9 (32 ratings) — better |
| Positive reviews | 66.7% of reviews — better | 41.7% of reviews |
| Number of ratings | — | 32 — better |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | CROMBEZ Emmanuel | Benjamin Bloomfield |
Customer experience
ISBN
Chant Tools
In-app purchases
ISBN
No in-app purchases
Chant Tools
No in-app purchases
