Monergism eBook Library vs Library Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Monergism eBook Library
Access a vast collection of over 900 theological and biblical eBooks from renowned authors. Enjoy offline reading, customizable fonts, and easy navigation to explore profound spiritual insights and strengthen your faith.
- Over 900 theological eBooks
- Offline reading
- Resizable fonts
- Search function
- Browse by topic/author
- My Library feature
- Automatic updates
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The Monergism eBook Library gives readers free access to a large collection of classic Christian, Reformed, and biblical works in a simple mobile reading experience. Browse, download, and read hundreds of public-domain and freely available eBooks from authors such as John Calvin, John Owen, Charles Spurgeon, Martin Luther, Augustine, Jonathan Edwards, J. C. Ryle, and many others. Key features: • Access a large theological eBook library • Annotate with notes and highlights • Listen to corresponding audio • Categorization of books by status and shelves • Download books for offline reading • Browse and search by author, category, or title for easy discovery • Resume reading from your saved location • Pleasing theme and interface The app is designed for readers, pastors, students, and anyone who wants convenient access to historic Christian writings and biblical resources.
Library Calculator
Easily calculate your daily reading goal to finish any book by its due date. Input your current page, total pages, and the deadline to get a clear daily target. Update your progress to adjust the calculation as you read.
- Daily reading page calculation
- Set book due dates
- Update current page progress
- Recalculate daily reading goals
- Simple and quick interface
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Library Calculator makes it easy to keep track of how many pages you need to read per day to finish your book by its due date. Enter your current page number, the total number of pages, & the due date. Library Calculator will display the number of pages you need to read each day leading up to your due date to finish your book on time. Features: • Quick and simple page calculation for upcoming due dates. • Update Page Numbers: Allows you to change your current page number to recalculate your daily count.
Screenshots
Verdict
The clearest difference is in-app purchases: Monergism eBook Library at none against Library Calculator's 1. Monergism eBook Library also leads on update cadence (every 5 days vs every 2 months) and ratings volume (122 vs 1). On price, rating, ads 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
Both are free to download. Library Calculator sells 1 one-off in-app purchase. Monergism eBook Library asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for Monergism eBook Library against 5.0 for Library Calculator. That said, the two scores are not equally well evidenced: Monergism eBook Library has 122 ratings behind it against 1, so its average is the more settled of the two.
Monergism eBook Library ships an update every 5 days, Library Calculator every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Monergism eBook Library | Library Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (122 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 96.2% of reviews | — |
| Number of ratings | 122 — better | 1 |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 18.4 |
| Further details — not scored | ||
| Size | 58 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Publication Resource Foundation | Logan Voss |
Customer experience
Monergism eBook Library
Library Calculator
Bugs and requests
Monergism eBook Library
Reported bugs
7 issues- Cannot turn or scroll pages
- App does not start when offline
- Book keeps skipping around when scrolling
- Downloaded books not appearing in library
- Pictures of books spinning, unable to open
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- Links within the table of contents do not work
- App won't hold reading place after closing
Requested features
10 requests- Indicate AI translations/audiobooks
- Highlighting feature
- Favorites/Save feature
- Notes feature
- Ability to make folders for saved content
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- Ability to open book from search bar
- Text-to-speech app compatibility
- Dark mode option
- Bookmarks within the program
- Ability to bookmark where I left off
Library Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Monergism eBook Library
No in-app purchases
Library Calculator
- Reading Notifications$0.99
Questions
Is Monergism eBook Library free?
Is Library Calculator free?
Which has better reviews, Monergism eBook Library or Library Calculator?
Do Monergism eBook Library or Library Calculator have ads?
Which is updated more often, Monergism eBook Library or Library Calculator?
Other comparisons
