Kairo: RSVP Reader
kairoapp Books & Reference
Read EPUBs, PDFs and ebooks faster with a focused RSVP speed reading app.
- Downloads
- 665+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 11
- 2026 · v1.4.0
Screenshots
About Kairo: RSVP Reader
Read EPUB, MOBI, PRC, AZW, FB2, PDF, DOCX, TXT, Markdown and HTML files using Rapid Serial Visual Presentation (RSVP), a reading method that displays text word by word at a pace you control.
Instead of constantly moving your eyes across a page, Kairo keeps words in one focused reading position. Choose your reading speed and work through books, documents, articles and study material with less visual clutter.
FEATURES
• RSVP reading with adjustable reading speed
• Import your own books and documents
• EPUB, MOBI, PRC, AZW and FB2 support
• PDF and DOCX support
• TXT, Markdown and HTML support
• Clean, minimal reading interface
• Designed for focused, distraction-free reading
• Completely free and open source
SUPPORTED FORMATS
Ebooks: EPUB, MOBI, PRC, AZW, FB2
Documents: PDF, DOCX
Text and web: TXT, Markdown, MD, HTML
FOCUSED READING WITH RSVP
RSVP, or Rapid Serial Visual Presentation, presents text sequentially in a fixed position.
Rather than scanning back and forth across a page, Kairo lets you keep your attention in one place while words appear at the speed you choose.
Read at a comfortable pace or increase the speed when you want to move through material more quickly.
MORE THAN AN EBOOK READER
Kairo isn't limited to EPUB books. You can import PDFs, Word documents, Markdown files, text files and HTML content into the same focused reading experience.
Use Kairo for novels, articles, coursework, research material, personal notes and other documents.
CALM BY DESIGN
Kairo keeps the interface intentionally minimal so your reading stays at the centre of attention.
No clutter or unnecessary distractions. Just your files, your pace and your focus.
FREE AND OPEN SOURCE
Kairo Reader is completely free and open source.
Digital reading tools should help you focus on what you're reading, not get in the way.
What’s new
Version 1.4.0 · Updated October 11, 2026
- Performance improvements and bug fixes - New theme studio with custom colours, fonts, live previews and saved designs. - Smoother RSVP pacing, natural phrasing and simpler reading-support controls. - Clearer word guidance and improved contrast across themes. - More reliable reading progress, chapter navigation and position restoration. - Improved book imports, passage search and Focus mode behaviour. - Optional “What’s new” walkthroughs and a changelog in Settings.
User reviews
Amazing app
This is the best thing ever especially the Bionic one! I hope this stays free. Does this have a github repo?
Gratis, libre e increíble! Gracias!
One of the best readers I've found - highly recommend
Alternatives to Kairo: RSVP Reader
Looking for apps like Kairo: RSVP Reader? Here are 3 similar Android apps on Google Play. The highest rated is REsimpli (4.8/5), and all 3 are free to download.
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Kairo: RSVP Reader | – | Free | 500+ | Oct 11, 2026 | |
| athme: Play Sports Meet People | – | Free | 1,000+ | Oct 25, 2026 | Compare |
| ThoughtSpot | 3.9 / 5 | Free | 5,000+ | Sep 28, 2026 | Compare |
| REsimpli | 4.8 / 5 | Free | 5,000+ | Oct 29, 2026 | Compare |
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