BookFolder vs Book.io
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BookFolder
Organize your PDF library with custom folders, cover images, and themes. Enjoy a personalized reading experience with features like split-screen multitasking and bookmarks. This free app offers a clean interface and essential reading tools.
- Custom folder organization
- Custom cover images for PDFs
- Split-screen multitasking on iPad
- Multiple theme colors and icons
- Dark Mode support
- Bookmarks and table of contents
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Organize your PDFs, set custom covers, and choose from several theme colors and icons, for a pleasant reading experience just the way you want it. • Create folders and folder groups to keep your PDFs organized however you prefer. Rename and rearrange things as the mood takes you. Name every single book and folder the same thing, if you really want to! (I don’t recommend doing that, but nonetheless, that’s the sort of awesome power that you wield if you use BookFolder.) • Set custom cover images for every book (or stick with a book’s default cover, of course). Your library will look the way that you want it to! (And the underlying files remain pristine, so if you begin to regret choosing a photo of your cat for every book in your collection, you can always restore the originals and no one will know. Except your cat, who is judging you now.) • Get wild on an iPad with split-screen multitasking support. Read two books at once (or the same book twice)! If that’s something that you want to do. • Swap between five theme colors, for an interface that works best for you. (Dark Mode support, too, of course!) • Choose from a dozen icons, from solid colors to subdued platinum to a retro rainbow look, to fit your mood and to ensure a harmonious home screen layout with your other apps. (I’m not the only one who arranges my icons by color and design… am I?) • You can use it to actually read the PDFs, too, of course. Mustn’t forget that part. • Plus bookmarks, searching, and table-of-contents support, as one would expect. • Also, it’s free, no in-app purchases, no tracking… just a nice PDF reader and library manager. I hope that you’ll enjoy it!
Book.io
Manage your digital library of eBooks and audiobooks with a user-friendly interface. Customize your reading experience with various themes and text settings, and enjoy features like bookmarking and embedded media. Own and control your digital content.
- eBook and Audiobook management
- Customizable themes and text settings
- Seamless navigation and bookmarking
- Audiobook playback and reading/listening switch
- Embedded video and fixed format support
- Social media login
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Book.io is the eBook and Audiobook app that empowers you to manage your digital library on your terms. Transform your reading experience with a range of features crafted for maximum enjoyment. Key Features: 1. Effortless Reading: Navigate your eBooks seamlessly with our user-friendly interface. 2. Customizable Themes: Personalize your reading environment with Light, Paper, or Dark themes. 3. Tailored Text Settings: Adjust text size, line spacing, and fonts, including options like Open Dyslexic. 4. Bookmarking and Navigation: Easily bookmark pages and navigate through your reading material. 5. Media Support: Immerse yourself with audiobooks, embedded videos, and fixed format support. 6. Dark Mode: Read comfortably in low-light settings with our sleek dark mode. 7. Multi-Language Support: Experience Book.io in Spanish or English for a tailored touch. Why Choose Book.io? Embrace the future while preserving the past with our collection of Unchangeable, Unburnable, Unbannable eBooks and Audiobooks you own and control. Join our community of satisfied readers today. Download Book.io and embark on your journey of actual digital ownership. What’s New: - Audiobook Support: Dive deeper into your favorite stories with our new audiobook feature. Switch between reading and listening anytime, anywhere. - Social Media Connection: Book.io is now easier than ever to get started. Log in or create an account using your existing social media credentials.
Screenshots
Verdict
The clearest difference is update cadence: BookFolder at every 6 days against Book.io's every 2 months. BookFolder also leads on iOS requirement (14.0 vs 16.0). Book.io's advantage is review sentiment (97% vs 88%). On price, rating, 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. Neither carries in-app purchases, so what you see is what you pay.
Book.io holds the better App Store score, 4.8 against 4.7. Both are backed by a comparable volume of ratings — 28 and 58 respectively. Written reviews point the same way: 88% of BookFolder's written reviews are positive against 97% of Book.io's.
BookFolder ships an update every 6 days, Book.io every 2 months. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.
| Parameter | BookFolder | Book.io |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (28 ratings) | 4.8 (58 ratings) — better |
| Positive reviews | 88.2% of reviews | 96.7% of reviews — better |
| Number of ratings | 28 | 58 — better |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 2 MB | 31 MB |
| Age rating | 4+ | 12+ |
| Developer | Molly Black | Book.io, Inc |
Customer experience
BookFolder
Book.io
In-app purchases
BookFolder
No in-app purchases
Book.io
No in-app purchases







