Best Dewey Decimal Apps

250+ iOS apps curated and reviewed

4.4 avg rating

20 free apps

Updated September 2026

Out of 250+ dewey decimal apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Dewey Decimal Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Decimator	Free	4.3★ (3)	No	No	May 2026
2	LibraryTools.com	Free	5.0★ (3)	No	No	Jul 2026
3	MyLibraryList Free	Free	4.0★ (2)	No	No	May 2026
4	iCollect Books: Library List	Free	4.6★ (4.1K)	No	Yes	Sep 2026
5	Ex Libris Lookup	Free	—	No	Yes	Aug 2026
6	Book Catalog: Bookshelf	Free	4.0★ (1)	No	Yes	Sep 2026
7	CLZ Books - library organizer	Free	4.8★ (2.6K)	No	Yes	Sep 2026
8	LibraryThing	Free	3.5★ (278)	No	No	Sep 2026

Top Picks for Dewey Decimal

#1

Decimator by Kosada Incorporated

Editor's Choice

🛍️ Shopping

4.3(3 ratings)

Free

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Easily find Dewey Decimal numbers with this offline app. It supports multiple languages and allows browsing and searching for classification codes.

#2

LibraryTools.com by John White

Strong Contender

5.0(3 ratings)

Free

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This educational app offers a gamified approach to mastering library classification systems. It features interactive games for both Library of Congress and Dewey Decimal systems, aiding in training library assistants.

#3

MyLibraryList Free by David O'Brien

Worth Considering

📚 Books

4.0(2 ratings)

Free

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Organize your library book lists with this app. It helps you track books by their shelf order using the Dewey Decimal Classification system. Find books more easily with its shelf location guidance.

More Dewey Decimal apps to explore

iCollect Books: Library List

iCollect Books: Library List

iCollect Books: Library List

Organize a classroom bookshelf

Organize and manage any book collection, from personal libraries to classroom inventories. Features include barcode scanning, cloud backup, and cross-device syncing. Customize layouts and export your data.

Manage and inventory any bookBarcode scanning and database searchCloud backup and sync across devices

free with in-app purchases

Ex Libris Lookup

Ex Libris Lookup

Ex Libris Lookup

Every book, by the numbers.

Book Catalog: Bookshelf

Book Catalog: Bookshelf

Book Catalog: Bookshelf

Scanner for your home library

Easily catalog, track, and review your book collection. Scan barcodes or search to automatically import book details, manage your reading lists, and find books in your library. Your data is securely stored in iCloud.

Barcode scanning for book detailsAutomatic title, author, and cover importManage 'want to read' lists

CLZ Books - library organizer

CLZ Books - library organizer

CLZ Books - library organizer

Just scan ISBN barcodes

Easily catalog your book collection by scanning ISBN barcodes or searching by author and title. Automatically retrieve book details, values, and cover art. Organize your library with customizable views, multiple collections, and cloud syncing.

Scan ISBN barcodes for automatic data retrievalSearch by author and titleAutomatic book details, values, and cover art

Catalog your books and media

Catalog your personal book, DVD, and CD collections. Easily add items by searching or scanning barcodes. Enhance your catalog with high-resolution cover photos and browse your collection visually.

Catalog books, DVDs, and CDsSearch for media itemsScan ISBN barcodes

Velato: Book Scanner & Catalog

Velato: Book Scanner & Catalog

Velato: Book Scanner & Catalog

Organize Your Home Library

Syosset Public Library

Syosset Public Library

Syosset Public Library

by Syosset Public Library

Campbell County Public Library

Campbell County Public Library

Campbell County Public Library

Home Library Manager - Leto

Home Library Manager - Leto

Home Library Manager - Leto

Book Tracker & Reading List

Easily manage your personal book collection by scanning barcodes, adding detailed descriptions, and organizing them into smart collections. Track your reading progress and sync your library across all your devices.

Barcode scanning for quick book entryDetailed book information fieldsSmart collections based on various parameters

free with in-app purchases

Glendale Public Library App

Glendale Public Library App

Glendale Public Library App

by City of Glendale, Arizona

Manage your library account on the go. Search the catalog, renew borrowed items, and place holds for books and other materials directly from your mobile device.

Manage library accountSearch catalogRenew books

Stacked - Library Management

Stacked - Library Management

Stacked - Library Management

by Neuvo WebTech LLP

📊 Productivity

Scan. Catalog. Manage.

Book Tracker - BookBinder

Book Tracker - BookBinder

Book Tracker - BookBinder

Reading Tracker

Organize your personal library with this intuitive book management tool. Easily add books by scanning ISBNs or searching, track your reading progress, and sync your collection across devices. Ideal for book enthusiasts, students, and reading lovers.

Scan ISBNs to add booksSearch by title or authorTrack reading progress

by DEEP Publishers

BookBuddy: Book Tracker

BookBuddy: Book Tracker

BookBuddy: Book Tracker

ISBN scanner & library manager

Manage your entire book collection digitally, track reading progress, and organize your library. Easily add books by scanning, searching, or manual entry. Keep tabs on borrowed and lent items, and gain insights into your reading habits.

Scan barcodes to add booksOrganize into custom categoriesTrack borrowed and lent books

free with in-app purchases

Library Manager

Library Manager

Library Manager

For school library

FAQ about Dewey Decimal

What are the best dewey decimal apps for iPhone?

Decimator tops our dewey decimal apps ranking as of September 2026, with a 4.3-star average from 3 App Store ratings, and it's free to download.

Are there free dewey decimal apps for iPhone?

Yes — 20 of the top dewey decimal apps we rank are free to download, including Decimator and LibraryTools.com.

Does Decimator have ads or in-app purchases?

Decimator has no ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many dewey decimal apps are on the App Store?

We track 250+ dewey decimal apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What is the price of Decimator?

Decimator is available for free.

What devices is Decimator compatible with?

Decimator is compatible with iPhone and iPod devices.