Ello is a San Francisco-based edtech startup building an AI-powered reading coach for children in kindergarten through third grade. Using world-leading child speech recognition, Ello listens as a child reads aloud and provides real-time, gentle corrections and encouragement through its proprietary Adaptive Learn technology, replicating the support of a 1:1 human reading tutor. The platform pairs this coaching with an exclusive library of phonics-aligned decodable e-books matched to each child's level, plus a rewards system grounded in behavioral psychology to keep young readers motivated. Founded in 2019 by Tom Sayer, Dr. Elizabeth Adams, and Catalin Voss, Ello aims to eradicate childhood illiteracy and offers discounted access for low-income families. The company reports that the majority of children using Ello read more, gain confidence, and improve their reading skills.