# Thorium Reader vs 40

The clearest difference is price: Thorium Reader at Free against 40's $19.99. Thorium Reader also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (11 vs 1). 40's advantage is rating (5.0 vs 3.6) and chart position (#122 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Thorium Reader is free to download; 40 costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

40 holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Thorium Reader has 11 ratings behind it against 1, so its average is the more settled of the two.

Thorium Reader ships an update every 3 weeks, 40 every 3 months. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Thorium Reader | 40 |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [3.6 (11 ratings)](https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/40-discipleship/id6746419928/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#122** |
| Size | 46 MB | 4 MB |
| Requires iOS | 26.1 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Readium](https://appshunter.io/developer/1232183924) | [Living Worthy Ministries, LLC](https://appshunter.io/developer/1801228425) |

## What reviewers say

### Thorium Reader

[App page](https://appshunter.io/ios/app/thorium-reader/id6745025189)

Organize all your ebooks, comics, and manga in a single app. Customize your reading experience with adjustable text, fonts, and themes. Listen to audiobooks and zoom into visual content with ease.

**Highlights:** Unified bookshelf for all content, Adjustable text size and spacing, Multiple font options, Text-to-speech audio playback, Zoom for comics and manga, Offline dictionary and translation, Import EPUB, PDF, CBZ files

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

**In-app purchases:** none


### 40

[App page](https://appshunter.io/ios/app/40-discipleship/id6746419928)

**Currently charting:** #122 Top Paid · Book (US App Store)

This app provides a structured, year-long program for intentional discipleship between Christian followers. It includes daily devotionals, reflection questions, a prayer journal, and scripture study tools to foster spiritual growth and equip users to make disciples.

**Highlights:** Year-long discipleship program, Daily devotional readings, Reflection and discussion questions, Digital prayer journal, Scripture study with CAMP Method, Equips users to make disciples

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

**In-app purchases:** none


## Frequently asked questions

### Is Thorium Reader free?

Thorium Reader is free to download, with no in-app purchases.

### Is 40 free?

40 costs $19.99, with no in-app purchases.

### Which has better reviews, Thorium Reader or 40?

40 is rated higher. Thorium Reader averages 3.6 out of 5 from 11 ratings, while 40 averages 5.0 from 1 ratings.

### Do Thorium Reader or 40 have ads?

Neither Thorium Reader nor 40 shows ads.

### Which is updated more often, Thorium Reader or 40?

Thorium Reader ships an update every 3 weeks, and 40 every 3 months. Most recently, Thorium Reader was updated on October 13, 2026 and 40 on October 9, 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.*