Looking for the best free e-book reader apps for Android in 2025? We've tested and ranked the top apps that make digital reading easy, fast, and enjoyable. These Android e-reader apps support popular formats like EPUB, PDF, MOBI, and more — and they’re all free to use.
Whether you want a lightweight app, offline access, or powerful features like annotation and cloud sync, this list has the right tool for every kind of reader.
Let’s explore the apps that turn your Android device into the perfect portable library.
The 16 Best Free Android E-Book Apps in 2025 – No Subscriptions Needed.
1. Moon+ Reader
Moon+ Reader isn’t just another app — it’s a fully customizable reading experience that adapts perfectly to your preferences. Whether you’re cozying up under dim lights or diving into dense PDFs, Moon+ Reader offers powerful tools to make reading effortless and enjoyable.
If you frequently work with PDFs, checking out the best ad-free PDF reader apps on Android can enhance your reading options even further.
Key Features
- Extensive customization: Adjust font size, background color, margins, line spacing, and text alignment to suit your reading style.
- Night mode: Reduces eye strain with a dark, soothing display for nighttime reading.
- Multi-format support: Compatible with EPUB, PDF, MOBI, CHM, UMD, FB2, TXT, HTML, and more.
- Dictionary integration: Tap any word for instant definitions without leaving the app.
- Built-in bookstore: Explore and download new titles directly inside the app.
- Community theme store: Access or create custom themes to personalize your reading interface.
- Text-to-speech: Convert text to audio and listen to books hands-free.
- Advanced navigation: Quickly jump between pages, chapters, or search for keywords.
Pros & Cons
Pros:
- Highly customizable reading environment
- Supports a wide range of formats
- Feature-rich, including text-to-speech and dictionary tools
- Free with optional in-app purchases for additional features
Cons:
- Some features can be overwhelming for beginners
- Ads in the free version (removable via upgrade)
Best For
Readers who want full control over their reading experience and need support for diverse file formats.
2. Aldiko Book Reader
If you’re tired of complicated apps and costly subscriptions, Aldiko Book Reader offers a straightforward and free solution. This open-source app delivers a smooth reading experience with essential features designed for simplicity and ease.
Key Features
- Simple and clean interface: Easy navigation with no clutter or confusing menus.
- Wide format support: Compatible with EPUB, PDF, and DRM-protected ebooks.
- Library borrowing: Connect to local libraries and borrow ebooks directly on your device—no library visits needed.
- Customizable reading: Adjust font size, background colors, and themes to tailor your reading environment.
- Offline reading: Download books and enjoy them without an internet connection.
- Built-in bookstore: Discover new titles from independent authors and publishers within the app.
Pros & Cons
Pros:
- User-friendly and intuitive design
- Supports DRM-protected files
- The library borrowing feature is a big plus
- Free with no ads
Cons:
- Limited advanced customization compared to other apps
- Occasional bugs reported on some Android versions
Best For
Readers who want a clean, easy-to-use app with library borrowing features and support for DRM-protected ebooks.
3. ReadEra
In a crowded field of e-book readers, ReadEra stands out by combining power and simplicity — all while keeping ads and registrations out of the picture.
Key Features
- No ads, no registration: Dive into reading instantly without interruptions.
- Multiple books at once: Use split-screen mode to read two books simultaneously — great for study and research.
- Wide format support: Compatible with EPUB, PDF, MOBI, Word documents, TXT, and more.
- Extensive customization: Fine-tune font size, margins, line spacing, and background color.
- Night mode: Comfortable reading in low light to protect your eyes.
- Advanced tools: Dictionary integration, text-to-speech, and cloud sync for seamless reading across devices.
Pros & Cons
Pros:
- Completely ad-free and no sign-up required
- Supports a large variety of file types, including non-ebook formats
- Split-screen reading is a unique plus
- User-friendly with powerful customization
Cons:
- Limited social or community features
- Occasional crashes reported on older devices - if this happens to you, try following our guide to fix apps crashing on Android for quick solutions.
Best For
Power users and multitaskers who want an ad-free, flexible reader supporting many file types and advanced features.
4. Lithium: EPUB Reader
If you’re after a clean, distraction-free reading experience, Lithium is the app to try. Designed with simplicity and elegance in mind, it lets you focus entirely on your book without unnecessary clutter.
For those particularly handling manga or comic files, our Best Manga Reader App guide might help you find a more dedicated reader.
Key Features
- Minimalist design: A sleek, distraction-free interface that puts your book front and center.
- Intuitive controls: Easy navigation to find chapters, adjust settings, and manage your library with a few simple taps.
- Optimized for EPUB: Tailored specifically for the popular EPUB format, ensuring smooth and fast rendering.
- Cloud sync: Automatically sync your reading progress, bookmarks, and highlights across multiple devices.
- Easy sharing: Share quotes, passages, or chapters with friends directly from the app.
Pros & Cons
Pros:
- Elegant and distraction-free interface
- Smooth EPUB reading experience
- Syncs reading progress across devices
- No ads or unnecessary features
Cons:
- Limited to EPUB format (no PDF or MOBI support)
- Fewer customization options compared to some competitors
Best For
Readers who prefer a simple, elegant app focused on EPUB files without distractions or clutter.
5. Freda
Freda is a versatile and inclusive e-book reader that adapts seamlessly to your reading style. Beyond traditional reading, it offers excellent text-to-speech features, making it perfect for multitasking or for readers with visual impairments.
Key Features
- Text-to-Speech (TTS): Let Freda read your books aloud with customizable voices and adjustable speeds, ideal for listening on the go.
- Customizable reading experience: Adjust font size, margins, line spacing, background color, and enable night mode for comfortable low-light reading.
- Supports multiple formats: Compatible with EPUB, MOBI, FB2, HTML, and TXT files, giving you flexibility in your reading material.
- Network flexibility: Download books over Wi-Fi or mobile data as you prefer.
- Accessibility: Designed to be user-friendly for all abilities, Freda offers features that enhance accessibility.
- Ad-supported free version: Ads are minimal and unobtrusive, usually placed at the bottom of the screen.
Pros & Cons
Pros:
- Powerful text-to-speech functionality with multiple voices
- Wide format support including EPUB and MOBI
- Customizable interface with night mode
- Accessibility features enhance usability for all readers
Cons:
- Free version contains ads (removable via upgrade)
- UI can feel a bit dated compared to newer apps
Best For
Readers seeking a feature-rich app with text-to-speech and strong accessibility options.
6. E-Book Droid
E-Book Droid isn’t just a simple e-book reader—it’s a powerful document viewer built for academic, professional, and technical reading needs. If you frequently work with PDFs, DjVu files, or research documents, this open-source app offers tools to make your workflow smooth and efficient.
Key Features
- PDF and DjVu support: Handles complex academic papers, manuals, and technical documents with ease.
- Advanced annotation: Highlight, underline, add notes, and draw directly on documents to aid study or review.
- Text reflow: Automatically adjusts PDF text for better readability on small screens.
- Dictionary integration: Tap words for instant definitions without leaving the app.
- Open-source and free: No hidden fees, fully customizable, with an active developer community continuously improving the app.
- Regular updates: Benefits from ongoing community-driven development and feature enhancements.
Pros & Cons
Pros:
- Excellent support for academic and technical document formats
- Advanced annotation and note-taking features
- Free and open-source with no ads
- An active community ensures steady improvements
Cons:
- Interface can feel less polished than commercial apps
- Not optimized for casual ebook formats like EPUB or MOBI
Best For
Students, researchers, and professionals who need a powerful and free tool for reading and annotating PDFs and DjVu documents.
7. Cool Reader
Cool Reader is a veteran app that remains a powerful reading companion, especially if you use an older device or need support for diverse formats. Whether you’re a long-time user or new to it, Cool Reader’s legacy, wide compatibility, and customization options make it a reliable choice for e-book lovers.
Key Features
- Wide format support: Opens EPUB, PDF, MOBI, TXT, and older formats like FB2 and TCR.
- Lightweight and efficient: Optimized to run smoothly on older Android devices without lag.
- Customizable reading experience: Adjust font size, line spacing, margins, and background color to suit your preferences.
- Night mode: Easy on the eyes for comfortable reading in low-light conditions.
- Text-to-speech: Listen to your books while on the move (feature availability may depend on your device and app version).
Pros & Cons
Pros:
- Supports a broad range of e-book formats, including some rare ones
- Runs smoothly on older or low-end devices
- Good customization options
- Night mode included for comfortable reading
Cons:
- User interface feels dated compared to newer apps
- Text-to-speech feature might not be reliable on all devices
Best For
Users with older Android devices or those needing support for rare e-book formats who want a lightweight, customizable reader.
8. Wattpad
Wattpad is more than just an e-book reader - it’s a dynamic online community where writers and readers connect, share, and discover original stories across countless genres.
If the app begins lagging over time, consider clearing the cache in bulk on Android to free up system resources.
Key Features
- Original stories: Access millions of user-generated stories in genres like romance, fantasy, thrillers, and more.
- Community engagement: Comment, offer feedback, and support emerging authors.
- Publishing platform: Share your own writing, participate in contests, and gain exposure.
- Offline reading: Download stories to enjoy anytime, even without internet access.
- Wide genre variety: Explore stories in over 50 languages, expanding your literary horizons.
- Accessibility: Customize font size, background colors, and enjoy text-to-speech for easier reading.
Pros & Cons
Pros:
- Massive library of unique, user-generated content
- Active, engaged community for feedback and interaction
- Great platform for aspiring writers
- Free to use with offline reading support
Cons:
- The quality of stories varies widely since the content is user-submitted
- Ads can be intrusive in the free version
- Limited support for traditional e-book formats like EPUB or PDF
Best For
Readers and writers are looking for a community-driven platform full of fresh stories and opportunities to engage with fellow book lovers.
9. EBook Reader by FBReader
Are you looking for an e-book reader that offers seamless cross-device syncing and keeps your digital bookshelf organized? EBook Reader by FBReader is a reliable choice that delivers just that.
Key Features
- Cross-platform sync: Sync your reading progress, bookmarks, and highlights across multiple devices without the need for cloud storage subscriptions.
- Supports multiple formats: Open popular formats such as EPUB, MOBI, FB2, and more, offering you great flexibility.
- User-friendly interface: Easy navigation and library management help you jump straight into reading.
- Customization options: Adjust font size, margins, line spacing, and background color to optimize your reading comfort.
- Night mode: Enjoy eye-friendly reading in low-light environments.
Pros & Cons
Pros:
- Convenient cross-device synchronization without extra cloud fees
- Supports a wide variety of e-book formats
- Lightweight and easy to use
- Includes night mode for comfortable nighttime reading
Cons:
- Free version may show ads, usually unobtrusive at the bottom
- Lacks advanced annotation features found in some other readers
Best For
Readers who want a simple, synchronized reading experience across multiple Android devices without the hassle of cloud subscriptions.
10. Book Reader
If you want a clean and easy-to-use app for enjoying your favorite books on Android, Book Reader is a great pick. It focuses on delivering a smooth reading experience without overwhelming features.
Key Features
- Intuitive interface: Navigate your library and read without distractions or complicated menus.
- Clean and uncluttered design: The app puts your books front and center, creating a focused reading environment.
- Customizable reading: Adjust font size, background color, and margins for maximum comfort.
- Supports major formats: Open popular formats like EPUB, MOBI, and TXT hassle-free.
- No DRM restrictions: Easily read DRM-free e-books without compatibility issues.
- Offline reading: Download books to enjoy anytime, even without an internet connection.
- Organize multiple libraries: Sort your collection by genre, author, or any system you prefer.
Pros & Cons
Pros:
- Simple and user-friendly interface
- Supports a wide range of common e-book formats
- No DRM issues
- Offline reading support
- Clean reading experience
Cons:
- Ads present in free version (usually at the bottom)
- Lacks some advanced features like annotations or cloud sync
Best For
Readers looking for a minimalist and straightforward e-book reader that just works without fuss.
11. Ebook Reader – Free Ebooks & Audiobooks
Looking for an all-in-one app that combines free ebooks and audiobooks? Ebook Reader – Free Ebooks & Audiobooks offers a vast library and features that let you seamlessly switch between immersive reading and hands-free listening.
Key Features
- Extensive free library: Access thousands of free ebooks across genres like classics, romance, thrillers, and more — discover new authors without spending a penny.
- Free audiobooks: Listen to captivating narrations, perfect for commutes, workouts, or relaxation.
- Supports popular audiobook formats: Plays both MP3 and M4B, ensuring smooth audio playback.
- Adjustable playback speed: Customize narration speed to your preference for an ideal listening experience.
- Bookmark and sleep timer: Save your spot in audiobooks and set a sleep timer to unwind with stories.
- Clean and intuitive interface: Effortlessly navigate the app and find your next favorite read or listen.
- Reading customization: Adjust font size, background color, and margins for comfort.
- Night mode: Protect your eyes during low-light reading sessions.
Pros & Cons
Pros:
- Large collection of free ebooks and audiobooks
- Easy-to-use interface
- Adjustable audiobook playback speed
- Night mode for comfortable reading
Cons:
- May include ads in the free version
- Audiobook library is limited compared to paid platforms
Best For
Readers and listeners who want a free, convenient app combining ebooks and audiobooks in one place.
12. Calibre Companion
If you manage your e-book collection with Calibre on your desktop, Calibre Companion is the perfect mobile app to sync and access your library effortlessly. It’s designed for users who want seamless control over their extensive e-book collections on Android.
Key Features
- Wireless syncing: Connect your Android device to your Calibre desktop library wirelessly — no more manual file transfers! Sync reading progress, bookmarks, and notes across devices.
- Full library access: Browse, search, filter, and sort your entire Calibre collection right from the app.
- Supports multiple formats: Read ebooks in EPUB, MOBI, PDF, AZW3, CBR, and many other formats without hassle.
- Customizable reading experience: Adjust font size, margins, line spacing, and background color to suit your preferences.
- Built-in night mode: Read comfortably in dim environments with an easy-on-the-eyes night mode.
- On-the-go format conversion: Convert ebooks to compatible formats directly from your device without needing a computer.
- Stay informed: Access news feeds and discover new books through integrated library catalogs.
Pros & Cons
Pros:
- Seamless wireless syncing with desktop Calibre
- Supports a wide range of ebook formats
- Format conversion within the app
- Powerful library management features
Cons:
- Requires Calibre desktop software for full functionality
- May be complex for casual readers
Best For
Power users and Calibre desktop users who want mobile access and control over their large ebook libraries.
13. BookFusion Reader
BookFusion Reader isn’t just an app — it’s your portal to a seamless, synchronized reading experience. Start a book on your phone, continue on your tablet, and pick up right where you left off on your laptop, thanks to BookFusion’s powerful cloud library.
Highlights of BookFusion Reader:
- Cloud-powered library: Store your entire collection in the cloud and access it from any device, anytime — no more manual transfers or duplicate files.
- Effortless syncing: Reading progress, bookmarks, highlights, and notes sync instantly across all your devices for a smooth, continuous experience.
- Supports many formats: Read EPUB, PDF, MOBI, and even comic book formats like CBR/CBZ, catering to diverse reading preferences.
- Personalize your reading: Customize font size, background theme, margins, line spacing, and text alignment for optimal comfort.
- Night mode: Enjoy cozy, eye-friendly reading sessions in low light with built-in night mode.
- Community-driven themes: Explore or contribute unique themes designed by the BookFusion community for a personalized touch.
Unique Features You'll Love:
- Text-to-speech: Listen to your books on the go — perfect for multitasking during commutes or workouts.
- Advanced navigation: Jump quickly to specific pages, chapters, or keywords.
- Built-in bookstore: Discover new titles without leaving the app and expand your literary horizons.
BookFusion Reader is more than just a reader — it’s a personalized, cloud-powered reading ecosystem. Download it today to enjoy freedom, convenience, and a vibrant community all in one place.
14. Google Play Books
Google Play Books, the official app by Google, offers a powerful combination of accessibility, diverse reading options, and cloud sync, making it a compelling choice for bookworms of all kinds.
Key Features
- Google Ecosystem Integration: Sync books, bookmarks, and reading progress across Android devices, Chrome, and Google Home.
- Cloud Storage: Securely store your e-books in Google Drive for easy access anywhere.
- Voice Control: Use Google Assistant to control your reading hands-free.
- Accessibility: Text-to-speech support for inclusive reading.
- Customization: Adjustable font sizes, multiple themes, and night mode for comfortable reading.
- Wide Format Support: Read EPUB, PDF, and audiobooks all within one app.
- Huge Library: Access millions of free and paid titles across genres.
Pros & Cons
Pros:
- Seamless syncing across multiple devices
- Integration with the Google ecosystem
- Supports multiple formats, including audiobooks
- Powerful accessibility options
Cons:
- Some features require specific devices or subscriptions
- Paid titles might be costly for some users
Best For
15. Kobo
Kobo isn’t just an e-book app; it’s a gateway to a global e-bookstore offering millions of titles and a tailored reading experience for every kind of reader. Whether you’re a veteran bookworm or just starting out, Kobo helps you discover and enjoy books your way.
Key Features
- Global Library: Access millions of books from international bestsellers to indie gems across diverse genres.
- Award-Winning Titles: Read critically acclaimed works recognized by awards like the Booker Prize and National Book Award.
- Personalized Recommendations: Get book suggestions tailored to your reading preferences.
- Customizable Reading: Adjust font size, margins, line spacing, background color, and switch between vertical/horizontal scrolling.
- Night Mode: Enjoy reading comfortably in low-light environments.
- Text-to-Speech: Available on select devices for hands-free reading.
- Cloud Sync: Seamlessly sync reading progress, bookmarks, and notes across all your devices, including Kobo e-readers.
- Offline Reading: Download books and read anywhere, even without an internet connection.
Pros & Cons
Pros:
- Huge, diverse global book catalog
- Personalized recommendations enhance discovery
- Syncs effortlessly across devices
- Supports multiple reading styles and customization
Cons:
- Text-to-speech is limited to certain devices
- Some premium titles require purchase
Best For
Readers who want access to a vast global library combined with personalized recommendations and the ability to sync reading progress across multiple devices—especially those invested in the Kobo ecosystem or using Kobo e-readers.
16. Nook
Nook, Barnes & Noble’s e-book reader app, combines a vast bookstore with personalized reading features to create a seamless experience for book lovers who enjoy discovering new titles and reading comfortably.
Key Features
- Vast Library: Access millions of e-books and audiobooks, from bestsellers to hidden gems across multiple genres.
- Expert Recommendations: Receive curated book suggestions from Barnes & Noble booksellers tailored to your preferences.
- Exclusive Content: Enjoy Nook Originals, exclusive e-books and audiobooks you won’t find anywhere else.
- Intuitive Interface: Easily navigate your library and the bookstore for a smooth reading and browsing experience.
- Customization: Adjust font size, margins, line spacing, and background color to suit your reading comfort.
- Night Mode: Protect your eyes during low-light reading sessions with the built-in night mode.
- Cross-Device Sync: Seamlessly sync your reading progress across devices (similar to Kobo).
Pros & Cons
Pros:
- Extensive Barnes & Noble bookstore integration
- Personalized expert recommendations
- Access to exclusive Nook Originals content
- User-friendly, clean interface
Cons:
- Less global reach compared to Kobo
- Some features require Barnes & Noble account and purchases
Best For
Readers who want a large bookstore experience integrated with their reading app, value expert recommendations, and appreciate exclusive content from Barnes & Noble with a comfortable, customizable reading interface.
Conclusion
Choosing the best free e-book reader app depends on your specific needs. If you want extensive format support and customization, Moon+ Reader and ReadEra are excellent options.
For seamless syncing across devices, FBReader and BookFusion Reader stand out. If you prefer a simple, distraction-free reading experience, Lithium and Book Reader are great choices.
If you want access to integrated bookstores and personalized recommendations, consider Kobo, Nook, or Google Play Books. Evaluate what features matter most to you and pick the app that suits your reading style.
Frequently Asked Questions (FAQs)
Which is the best app to read eBooks for free?
Top free e-book apps include Moon+ Reader, Aldiko, Freda, E-Book Droid, and Wattpad—each with unique features.
Is it OK to read ebooks on the phone?
Yes, reading on phones is convenient but take breaks to avoid eye strain, fatigue, and neck pain.
What is the main disadvantage of an e-reader?
E-readers may cause eye strain, distractions, ergonomic issues, and struggle with complex PDF layouts.
Can I read offline with free e-book reader apps?
Most free e-book readers allow downloading books for offline reading, perfect when no internet is available.
Are free e-book readers safe to use?
Yes, reputable free e-book readers are safe. Avoid apps from unknown sources to protect your device.