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Redline vs SwiftRead
SwiftRead is a speed reading app, best known as a browser extension. Redline is a speed-reading app that shows one word at a time with a red focal letter, then quizzes you on what you read. Pick SwiftRead if you mostly read in the browser, or in Kindle Cloud Reader and Libby. Pick Redline if you want a quiz after every read, training with levels and streaks, and audio turned into text.
Side by side
| Redline | SwiftRead | |
|---|---|---|
| What it is | A speed-reading web app, installable on a phone | A speed reading app, best known as a browser extension |
| How you read | One word at a time at a fixed point, with one red focal letter | Reading modes with adjustable words per minute, rhythm, layout and spacing, plus text-to-speech |
| Checks what you understood | A quiz after every read, and retention checks later | Its home page does not mention one |
| What it reads | Books, PDFs, Word files, web articles, podcasts and videos (audio is transcribed to text) | Web pages, pasted text, Markdown, PDF, ePub, Kindle Cloud Reader and Libby |
| Where it runs | The web, on any phone or computer | Chrome and Edge extensions, iOS, Android and the web |
| Price | Free beta, no card | Free to try; paid plans are on its pricing page |
What this page says about SwiftRead is from swiftread.com, read on November 14, 2026.
Which one should you use?
Use SwiftRead if you mostly read in the browser, or in Kindle Cloud Reader and Libby.
Use Redline if you want a quiz after every read, training with levels and streaks, and audio turned into text.
The fastest way to decide is to read the same thing in both. Start with your own number: take the reading speed test, then see 750 words a minute.
Questions
What is the difference between Redline and SwiftRead?
SwiftRead is a speed reading app, best known as a browser extension. Redline is a speed-reading web app that shows one word at a time with a red focal letter and quizzes you after every read. The difference to weigh: Redline checks what you understood after every read, and SwiftRead's home page does not mention a quiz.
Is Redline a good alternative to SwiftRead?
Yes, if you want a quiz after every read, training with levels and streaks, and audio turned into text. Choose SwiftRead if you mostly read in the browser, or in Kindle Cloud Reader and Libby. Redline is in free beta and asks for no card, so you can try it beside SwiftRead and keep the one you read more with.
What does SwiftRead cost?
Free to try; paid plans are on its pricing page, according to SwiftRead's own site on November 14, 2026. Redline is in free beta with no card.
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