# Shelf Scanner. vs ReadLevel AI

The clearest difference is review sentiment: ReadLevel AI at 100% against Shelf Scanner.'s 10%. ReadLevel AI also leads on rating (5.0 vs 4.5) and update cadence (every 3 months vs every 7 months). Shelf Scanner.'s advantage is ratings volume (252 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Shelf Scanner. sells 3 in-app purchases, starting at $4.99 per 7 days and ReadLevel AI sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReadLevel AI holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Shelf Scanner. has 252 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 10% of Shelf Scanner.'s written reviews are positive against 100% of ReadLevel AI's.

Shelf Scanner. ships an update every 7 months, ReadLevel AI every 3 months. The most recent releases landed on September 21, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | Shelf Scanner. | ReadLevel AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (252 ratings)](https://appshunter.io/ios/app/shelf-scanner/id6503261472/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/readlevel-ai/id6749190438/reviews)** |
| Number of ratings | **252** | 1 |
| Positive reviews | 9.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 2 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gabe Rogers](https://appshunter.io/developer/1584630702) | [Isabella Lee-Rubio](https://appshunter.io/developer/1424131616) |

## What reviewers say

### Shelf Scanner.

[App page](https://appshunter.io/ios/app/shelf-scanner/id6503261472)

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.

**Highlights:** Scan book barcodes for value, Photo scan entire bookshelves, Live pricing data, Sell books for profit, Source from major online sellers

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Monthly Pro | $15.99 | per month |
| Annual Pro | $48.99 | per year |


### ReadLevel AI

[App page](https://appshunter.io/ios/app/readlevel-ai/id6749190438)

Instantly determine a book's reading level by scanning any page with advanced AI. Get age range, grade level, and language-specific scores for any text, even without a barcode or ISBN. Works offline with foreign language books and digital displays.

**Highlights:** AI-powered text analysis, Instant reading level determination, Supports age range and grade level, Foreign language reading level scores, Works without ISBN or barcodes, Scans digital displays and photocopies

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Pro Monthly Subscription | $9.99 | per month |
| Scan Pack | $0.99 | one-time |


## Frequently asked questions

### Is Shelf Scanner. free?

Shelf Scanner. is free to download, with in-app purchases available.

### Is ReadLevel AI free?

ReadLevel AI is free to download, with in-app purchases available.

### Which has better reviews, Shelf Scanner. or ReadLevel AI?

ReadLevel AI is rated higher. Shelf Scanner. averages 4.5 out of 5 from 252 ratings, while ReadLevel AI averages 5.0 from 1 ratings.

### Do Shelf Scanner. or ReadLevel AI have ads?

Neither Shelf Scanner. nor ReadLevel AI shows ads.

### Which is updated more often, Shelf Scanner. or ReadLevel AI?

Shelf Scanner. ships an update every 7 months, and ReadLevel AI every 3 months. Most recently, Shelf Scanner. was updated on September 21, 2026 and ReadLevel AI on August 1, 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.*