scrolly vs Koodo Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
scrolly
Transform your PDF reading with a delightful experience. Customize text size and themes, save your progress with bookmarks, and enjoy a unique vertical scrolling mode. Perfect for books, papers, articles, and textbooks.
- Customizable text size
- Theme selection
- Bookmark saving
- Vertical snap-to-scroll
- Read books, papers, articles, textbooks
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replace your scrolling addiction with reading! this app displays PDFs in a beautiful reading experience where you can change the text size, choose a theme, and save bookmarks scroll through your book with a vertical snap-to-scroll use it to read books, scientific papers, articles, and textbooks easily!
Koodo Reader
Manage and read your local e-books with a powerful reader supporting numerous formats. Seamlessly integrate with cloud storage and NAS for cross-platform access. Customize your reading experience with adjustable fonts, themes, and optimized layouts.
- Broad e-book format support
- Cloud and NAS integration
- Cross-device library sync
- Customizable reading interface
- AI-powered dictionary and translation
- Night mode and multiple themes
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Koodo Reader is a powerful e-book reader designed for managing and reading local e-books. It supports a wide range of popular formats, including EPUB, PDF, MOBI, AZW3, TXT, Comics and more. It integrates seamlessly with personal NAS and cloud storage for a smooth cross-platform experience. With a fully customizable interface, you can adjust fonts, switch between multiple themes, enable night mode, and enjoy optimized layouts for any screen size. Key Features: Broad Format Support: EPUB, PDF, MOBI, AZW3, AZW, TXT, FB2, CBR, CBZ, CBT, CB7, MD, DOCX, HTML, XML, XHTML, MHTML, HTM Cloud Integration: Works with OneDrive, Google Drive, Dropbox, pCloud, Baidu Netdisk, 115 Netdisk, Aliyun Drive, Yandex Disk and Box Network Protocol Compatibility: WebDAV, Self-hosted Docker, SMB, FTP, SFTP and S3-Compatible Object Storage Sync Across Devices: Automatically keeps your library, reading progress, bookshelves, notes, and highlights up to date AI-Powered Tools: Built-in dictionary, translation, and smart summarization
Screenshots
Verdict
The clearest difference is rating: scrolly at 5.0 against Koodo Reader's 3.8. scrolly also leads on in-app purchases (none vs 2) and update cadence (weekly vs monthly). Koodo Reader's advantage is iOS requirement (15.5 vs 17.0). On price, review sentiment, ratings volume and ads 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. Koodo Reader sells 2 one-off in-app purchases. scrolly asks for nothing beyond the download.
scrolly holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 9 and 5 respectively. Written reviews point the same way: 86% of scrolly's written reviews are positive against 82% of Koodo Reader's.
scrolly ships an update weekly, Koodo Reader monthly. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.
| Parameter | scrolly | Koodo Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (9 ratings) — better | 3.8 (5 ratings) |
| Positive reviews | 85.7% of reviews — better | 82.2% of reviews |
| Number of ratings | 9 — better | 5 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 9 MB | 72 MB |
| Age rating | 4+ | 17+ |
| Developer | totally important LLC | 亮 郭 |
Customer experience
scrolly
Koodo Reader
In-app purchases
scrolly
No in-app purchases
Koodo Reader
- 5 million Character Quota$4.99
- Koodo Reader Pro (1 Year)$5.99
