The best apps for reading in 2025 are Kindle for the largest ebook library, Libby for free library books, and Moon+ Reader for customization. Which one is right for you depends entirely on what and how you read, as well as whether you prefer local file support or cloud ecosystems.
Reading apps have become genuinely excellent over the past few years. The right one can replace an entire bookshelf while fitting in your pocket. Here is the definitive breakdown.
| App | Best For | Platform | Cost | Library Size | Offline |
|---|---|---|---|---|---|
| Kindle | Largest selection, ecosystem | iOS, Android, Web | Free (books cost money) | Millions | Yes |
| Libby | Free books via library card | iOS, Android | 100% free | Millions (library) | Yes |
| Apple Books | Apple device users | iOS, macOS | Free (books cost money) | Large | Yes |
| Google Play Books | Android users, cross-device | Android, iOS, Web | Free (books cost money) | Large | Yes |
| Moon+ Reader | Customization, local files | Android | Free / $5 Pro | Local files + OPDS | Yes |
| Readwise Reader | Serious readers, highlights | iOS, Android, Web | $7.99/month | Import any source | Yes |
| Storytel | Audiobooks + ebooks combo | iOS, Android | $12.99/month | 600,000+ titles | Yes |
Best App by Reader Type
Casual readers: Kindle or Apple Books. Both have clean interfaces, massive libraries, and work seamlessly with purchases.
Budget readers: Libby is unbeatable. Connect your local library card and access thousands of ebooks and audiobooks for free.
Avid readers who highlight everything: Readwise Reader. It syncs highlights across all your reading material and resurfaces them via spaced repetition.
Android power users: Moon+ Reader Pro gives you granular control over fonts, themes, gestures, and supports EPUB, PDF, CBZ, and more.
People who want ebooks and audiobooks: Storytel offers both in a single subscription at a reasonable price.
Free vs Paid Reading Apps
| Category | Best Free Option | Best Paid Option | Worth Paying? |
|---|---|---|---|
| General Reading | Kindle (free app) | Readwise Reader $7.99/mo | Yes, for serious readers |
| Library Books | Libby (completely free) | N/A | Not needed |
| Customization | Moon+ Reader (free) | Moon+ Reader Pro $5 | Yes, one-time cost |
| Audiobooks | Libby audio | Storytel $12.99/mo | Yes, if you listen often |
Features That Actually Matter
- Font and size customization: Essential for comfortable long reading sessions.
- Background color options: Sepia and dark modes reduce eye strain significantly.
- Sync across devices: Start on your phone, continue on your tablet, always at the right page.
- Highlight and notes: Being able to annotate and export notes makes reading more productive.
- Sleep timer and reading stats: Useful for tracking reading habits.
Try Libby first if you have a library card. It is completely free and the catalog will surprise you. If you read more than two books a month and want everything in one place, Kindle or Readwise Reader will serve you better for the long term.
