Lexend is a variable font designed to aid in reading proficiency. It designed for the non-profit RevReading in 2018. Applying the Shaver-Troup Individually Optimal Text Formation Factors, studies have found readers instantaneously improve their reading fluency.
Lexend font is based on the Quicksand project from Andrew Paglinawan, initiated in 2008. Quicksand was improved in 2016 by Thomas Jockin for Google Fonts. Working with revReading, Thomas modified Quicksand for the specialized task of improving reading fluency in low-proficiency readers (including those with dyslexia.)
Readex Pro is the world-script expansion of Lexend.