# Leviathan vs Whio

The clearest difference is price: Whio at Free against Leviathan's $3.99. Whio also leads on update cadence (every 10 days vs every 12 months). Leviathan's advantage is in-app purchases (none vs 3) and iOS requirement (17.6 vs 26.0). On ads and device support there is nothing between them.

Whio is free to download; Leviathan costs $3.99 up front. Whio sells 3 in-app purchases, starting at $0.99 per 7 days. Leviathan asks for nothing beyond the download.

Leviathan ships an update every 12 months, Whio every 10 days. The most recent releases landed on October 29, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Leviathan | Whio |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/whio-epub-and-pdf-reader/id6813818431/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 42 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Zarfhome Software Consulting](https://appshunter.io/developer/457956106) | [Nil Coalescing Limited](https://appshunter.io/developer/1534370488) |

## 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


### Whio

[App page](https://appshunter.io/ios/app/whio-epub-and-pdf-reader/id6813818431)

This app is designed for reading technical books and code on iOS devices. It offers specialized features for code readability, customizable text and code styling, and helpful reading aids. Users can also highlight, take notes, and export their saved content.

**Highlights:** Code syntax highlighting, Independent text and code styling, Customizable themes, Reading aids (letter distinction, guide, focus window), Highlighting and note-taking, Export saved content, Import DRM-free EPUBs and PDFs

**Features:** Family Sharing, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited | $0.99 | per 7 days |
| Unlimited | $24.99 | per year |
| Lifetime Unlimited | $49.99 | one-time |


## Frequently asked questions

### Is Leviathan free?

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

### Is Whio free?

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

### Do Leviathan or Whio have ads?

Neither Leviathan nor Whio shows ads.

### Which is updated more often, Leviathan or Whio?

Leviathan ships an update every 12 months, and Whio every 10 days. Most recently, Leviathan was updated on October 29, 2026 and Whio on November 6, 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.*