Kairo vs Reading Trainer
Kairo
kairoreader.comReading Trainer
readingtrainer.comSide by side
| Figure | Kairo | Reading Trainer |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | — | Yes |
| iOS | — | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Speed Reading Apps | 7.7 (#16) | 8.4 (#5) |
| Audience | Kairo is for Android users who want to read their own DRM-free ebooks and documents using standard or accelerated reading modes. | The product page names frequent readers, executives, personal assistants, high school and college students, and purchasing and sales professionals as potential users. |
| Privacy | Kairo says it has no account system, ads or analytics SDKs and does not upload users’ libraries or reading activity to a Kairo server. | The maker says it does not sell personal data. |
| Support | The site directs users with questions about files or features to [email protected] and links to a page to support Kairo. | Users can contact the support team by email or submit a request through the support page. |
Plans
In their own words
Kairo
Kairo is a free Android app for reading DRM-free ebooks and documents in standard, adaptive RSVP, and Bionic Reading modes. The reader offers scrollable chapters, inline images, a table of contents, bookmarks, progress tracking, and a movable focus word. Adaptive RSVP aligns words with ORP and changes timing based on punctuation, word length, syllables, clauses, and readability. Bionic Reading emphasizes word beginnings while showing more sentence context. Reading profiles control pacing, typography, brightness, and focus, with six themes available. Focus mode provides a full-screen view and can optionally enable Android Do Not Disturb. Kairo 1.1 supports EPUB, MOBI, PRC, AZW, FB2, FB2.ZIP, DOCX, text-based PDF, TXT, Markdown, HTML, and HTM. Files must be DRM-free; scanned PDFs and OCR are unsupported. Imported content and reading data remain in private device storage.
Reading Trainer
Reading Trainer is a reading practice service aimed at improving speed, comprehension, and retention through exercises and a curriculum that adapts to a user's progress and results. Its library has 20 exercises, 15 of which can also be practiced individually outside the training plan. PowerReader lets users work with their own content, while statistics show exercise results, reading power, strengths, and weaknesses on the app and website. It supports 10 training languages, adjustable exercise font size, and offline use for up to two weeks; progress cannot sync while offline. Free access includes the first curriculum unit and a couple of exercises. Premium includes the full personalized adaptive curriculum, unlimited units, interactive exercises, and cloud synchronization of progress. Reading Trainer is available on Android, iOS, web, and Windows. Schools and businesses can request a demo, and the business offering describes customized curricula, exercises, progress monitoring, and integration with an existing HR ecosystem. The service is intended for consumers aged 16 or older, with an exception for minors aged at least 14 who have written consent from legal representatives.