IsDBI Reader vs LingoBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IsDBI Reader
Access and organize Islamic economics, banking, and finance publications. This reader allows you to sync purchases, collections, bookmarks, and notes across all your devices for a personalized reading experience.
- Access purchased books across devices
- Organize books into personal collections
- Sync bookmarks, highlights, and notes
- Customizable reading experience
- Access research publications
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The Islamic Development Bank Institute (IsDBI) is the knowledge beacon of the IsDB Group responsible for leading innovative knowledge-based solutions for sustainable development. We lead in providing Islamic Economics, Banking and Finance publications. We produce a wide range of publications, including flagship reports, textbooks, journals, conference proceedings, and other research publications. IRTI app features • Access any of the books you purchase from IRTI websites on all your devices. • Organize your books and PDFs into personal collections that will appear on all your devices. • Access bookmarks, highlights, notes and your current page on all your devices. • A customizable reading experience with your choice of font style, size and more
LingoBook
This app is an ebook reader designed for language learners. It allows you to read books in various formats and instantly translate any word you tap. You can also explore bilingual content like YouTube videos and news articles to enhance your vocabulary and comprehension.
- Read ebooks in multiple formats
- Built-in dictionary for 80+ languages
- Instant word translation
- Import your own books
- Bilingual YouTube videos
- Bilingual news articles
- Smart dictionary for vocabulary building
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Read books. Learn languages. All in one app. LingoBook is the ultimate ebook reader for language learners. Whether you're reading a novel in English or an article in French, LingoBook helps you understand every word – instantly. MAIN FEATURES - Read ebooks in PDF, EPUB, MOBI, AZW3 and more - Built-in dictionary with support for 80+ languages - Tap any word to see its meaning and translation - Import your own books easily from your device or cloud MORE TO EXPLORE - Watch bilingual YouTube videos with subtitles - Read bilingual news from around the world - Discover bilingual stories to improve your reading - Use the smart dictionary to build your vocabulary daily Perfect for English learners, language lovers, and avid readers who want to explore new languages through books and videos. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: IsDBI Reader at 5.0 against LingoBook's 3.7. IsDBI Reader also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 4 months). LingoBook's advantage is ratings volume (3 vs 1). On price, 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. LingoBook sells 3 in-app purchases, starting at $1.00 per month. IsDBI Reader asks for nothing beyond the download.
IsDBI Reader holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
IsDBI Reader ships an update every 3 weeks, LingoBook every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | IsDBI Reader | LingoBook |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 40 MB | 541 MB |
| Age rating | 12+ | 12+ |
| Developer | Ethmar Advertising Company | BILINGO COMPANY LIMITED - LEARN ENGLISH 4 SKILLS |
Customer experience
IsDBI Reader
LingoBook
In-app purchases
IsDBI Reader
No in-app purchases
LingoBook
- Premium Monthly$1.001 Month
- Premium Yearly$10.001 Year
- Premium Trial Yearly7 Days trial$10.001 Year
