Thorium Reader vs 40
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thorium Reader
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.
- 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
Read full descriptionHide full description
Looking for an app where you can bring all your ebooks, comics and manga in one place? That’s what we built Thorium Reader for. Read it your way Everyone’s different, that’s why we want you to be fully in control: • Adjust text size, switch between color schemes with themes and control spacing. • 10+ fonts available, including specialized ones. • You prefer audio? Listen to any ebook, whenever you want. We’ll remember your preference. • Zoom into comics, manga and magazines. • Add bookmarks with notes. • Use the built-in iOS dictionary and translation features, even offline. • Tweak your reading experience with reading options. Bring your own books A single bookshelf and reading application where you can bring all your content: • Download free books, borrow from your library or buy from your favorite retailer. • Support for ebooks, documents, comics and manga. • Import EPUB, PDF and CBZ files. • Support for Readium LCP, used by thousands of libraries and retailers. Thorium Reader is built by EDRLab, a non-profit dedicated to open standards, reading and accessibility.
40
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.
- Year-long discipleship program
- Daily devotional readings
- Reflection and discussion questions
- Digital prayer journal
- Scripture study with CAMP Method
- Equips users to make disciples
Read full descriptionHide full description
If you decided to seriously invest time and energy in helping someone become a committed disciple of Christ, would you know what to do or where to start? Dr. D.J. Horton has created a tool to help you! 40 is a one-of-a-kind app designed to be used between Christ-followers in an intentional discipleship relationship for approximately one year. This app contains the full content of D.J.’s two-part book, 40, and allows you to reuse the app as you continue discipling others. With daily devotional readings, reflection and discussion questions, a digital prayer journal, and Scripture to study using the CAMP Method created by D.J., this app will help you become a more devoted disciple of Jesus and a disciple maker for Jesus.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Thorium Reader | 40 |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | 3.6 (11 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #122 — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.1 | 16.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Readium | Living Worthy Ministries, LLC |
Customer experience
Thorium Reader
40
In-app purchases
Thorium Reader
No in-app purchases
40
No in-app purchases
Questions
Is Thorium Reader free?
Is 40 free?
Which has better reviews, Thorium Reader or 40?
Do Thorium Reader or 40 have ads?
Which is updated more often, Thorium Reader or 40?
Other comparisons















