# Leviathan vs Shelf Scan

The clearest difference is price: Shelf Scan at Free against Leviathan's $3.99. Shelf Scan also leads on update cadence (monthly vs every 11 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Shelf Scan is free to download; Leviathan costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Leviathan ships an update every 11 months, Shelf Scan monthly. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Leviathan | Shelf Scan |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/shelf-scan-book-spine-scanner/id6754824642/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | — | Free |
| Size | 49 MB | 26 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Zarfhome Software Consulting](https://appshunter.io/developer/457956106) | [Daniel Anthony Dolewski Ii](https://appshunter.io/developer/1850317130) |

## What reviewers say

### Leviathan

[App page](https://appshunter.io/ios/app/leviathan-interactive-comic/id6444325089)

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

**In-app purchases:** none


### Shelf Scan

[App page](https://appshunter.io/ios/app/shelf-scan-book-spine-scanner/id6754824642)

Instantly identify books from a photo of any bookshelf using AI. See ratings at a glance and discover your next great read. Integrates with your reading list to highlight books you want to read.

**Highlights:** Instant book recognition from shelf photos, View book ratings at a glance, Reading list integration, Smart highlighting of to-read books, Scan history saving, No account required for basic use

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

**In-app purchases:** none


## Frequently asked questions

### Is Leviathan free?

Leviathan costs $3.99, with no in-app purchases.

### Is Shelf Scan free?

Shelf Scan is free to download, with no in-app purchases.

### Do Leviathan or Shelf Scan have ads?

Neither Leviathan nor Shelf Scan shows ads.

### Which is updated more often, Leviathan or Shelf Scan?

Leviathan ships an update every 11 months, and Shelf Scan monthly. Most recently, Leviathan was updated on September 18, 2026 and Shelf Scan on September 12, 2026.

---

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