AccelaReader vs Kairo

AccelaReader is an online RSVP reading tool that flashes imported words in sequence for faster-reading practice. Users can paste text into the reader, choose a reading speed in words per minute, and set how many words appear at once. Display controls cover window dimensions, font size, font color, background color, and alignment. Reading options include variable pacing, sentence or paragraph chunks, pauses, and skipping stopwords. Keyboard shortcuts handle starting or pausing, restarting, loading text, opening settings, moving through the material, and changing speed. A bookmarklet can open selected text from a web page directly in AccelaReader, avoiding manual copying. It runs on the web and is listed with a Chrome extension. AccelaReader has a free plan and no comprehension exercises or guided training. Support is listed through Iris Reading by email and telephone.

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.