SG Libraries vs Shelf Scanner.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SG Libraries
Easily search the library catalog, discover new books, and manage your loans. Find nearby branches, check item availability, and create personalized reading lists. Stay updated on library events and new arrivals.
- Search library catalog
- Discover new arrivals and popular titles
- Manage loans and reservations
- Find library branches and hours
- Create favorite lists
- Read and write book reviews
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SG Libraries makes it easy for you to search for library items, discover new titles, review books, create favourite lists, look up library branch information and more from your iPhone! Discover • Stay in sync with upcoming library events • Discover the latest and greatest new arrivals • Browse through the top 100 newest and most popular titles in your favourite categories (updated monthly) Search • Search the NLB catalogue for library items by title, author, keywords and more • Quickly zero in on your items using filters such as item type, location or language • Search auto-completes as you type for your convenience • In fact, never type the same query again with the Recent Searches feature • Search for an item by snapping the barcode of the item ISBN! Item Details • Look up item details such as author, publisher, description and more • You can also look up book details on Amazon! • Get the availability and location of library items, sortable by physical distance • Reserve items for collection at your branch of preference • Read item reviews by contributed by the community or write one! • Check out related and recommended titles Favourites • Save and keep track of your favourite library items, all in one place • Quickly access your favourites using the Today Widget. Library Information • Find the nearest libraries to borrow or return a book, wherever you go! • Get branch details such as opening hours, contact and directions NLB Services • Check your loans, fines and reserved items Download this FREE app now! Facebook: http://www.facebook.com/sglibraries Twitter: https://www.twitter.com/sglibraries
Shelf Scanner.
Easily discover the value of books by scanning barcodes or taking photos of entire shelves. Get live pricing data from major online sellers to maximize your profit when selling your books.
- Scan book barcodes for value
- Photo scan entire bookshelves
- Live pricing data
- Sell books for profit
- Source from major online sellers
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Find Valuable Books. That's what Shelf Scanner makes it easy to do, our app can: - Scan book barcodes to find their values - Take a photo of a bookshelf and find the value of each book on the shelf - Provide live pricing data on any book you scan With Shelf Scanner you can easy find what your bookshelf, those old books you have laying around, or books from thrift stores, are worth, and sell them for a profit. Unlike other book scanning apps, we provide live pricing data of what your book is worth, sourced from the largest online book sellers and based on current listing prices. This means you get the most money for your books, quick and easy. Download Shelf Scanner today and start turning books into cash. Terms Of Use can be found at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.termsfeed.com/live/619c315c-27b8-4e47-9aaf-20bad24d5d6e
Screenshots
Verdict
The clearest difference is review sentiment: SG Libraries at 92% against Shelf Scanner.'s 10%. SG Libraries also leads on update cadence (every 5 weeks vs every 7 months) and monetization model (free vs free with in-app purchases). Shelf Scanner.'s advantage is ratings volume (252 vs 3). On price, ads, in-app purchases and device support 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
Both are free to download. SG Libraries sells 1 one-off in-app purchase and Shelf Scanner. sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
SG Libraries holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Shelf Scanner. has 252 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 92% of SG Libraries's written reviews are positive against 10% of Shelf Scanner.'s.
SG Libraries ships an update every 5 weeks, Shelf Scanner. every 7 months. The most recent releases landed on September 29, 2026 and October 13, 2026 respectively.
| Parameter | SG Libraries | Shelf Scanner. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) — better | 4.5 (252 ratings) |
| Positive reviews | 91.7% of reviews — better | 9.5% of reviews |
| Number of ratings | 3 | 252 — better |
| Update frequency | Every 5 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 24 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Ken Toh | Gabe Rogers |
Customer experience
SG Libraries
Shelf Scanner.
In-app purchases
SG Libraries
- Ad-Free Version$0.99
Shelf Scanner.
- Weekly Pro$4.997 Days
- Monthly Pro$15.991 Month
- Annual Pro7 Days trial$48.991 Year
