Leo vs Spritz
Spritz is the company that put RSVP on the map in 2014. But Spritz and Leo solve different problems: one is a reading engine, the other is a reader for your own books. Here is the honest comparison.
What Spritz does well
Its technology is one of the most recognizable in the category: the optimal recognition point, the red letter that aligns each word where the eye catches it best. It is extremely minimal: it fits on a tiny screen, even a watch, and that is why today it mainly works as a licensed technology integrated into other apps and devices. If what you want is the most famous RSVP engine, that is Spritz.
How Leo is different
Leo is not an engine: it is the app where you open your full books, EPUB and PDF, and read them with RSVP. Below the word sits the full chapter text, synchronized and tappable, so you can reread or jump around, something a single loose word cannot give you. If the book includes illustrations, you see them in context. And because you train by reading, Leo shows your progress: daily minute and word goals, your streak and your speed over time. Short version: Spritz invented a piece of the engine; Leo builds the whole car for reading books.
Quick table
| Leo | Spritz | |
|---|---|---|
| What it is | Reader for your books | RSVP technology / engine |
| Your EPUB and PDF files | Yes | No |
| Full text for rereading | Yes | No |
| Book images | Yes | No |
| Stats and progress | Yes | No |
What about comprehension?
The weak point of showing a single word is that you cannot go back and reread, and science warns that this hurts when you push the speed. Leo keeps the full text close for exactly that reason. We explain it in the history of RSVP.
Leo is coming soon to the App Store. Join the waitlist and be among the first to try it.