https://techcrunch.com/2020/03/26/duolingos-new-app-teaches-children-how-to-read-and-write/

Until now, Duolingo‘s focus was always squarely on teaching languages, but today, the company launched Duolingo ABC, a free English literacy app for children ages 3 to 6. Originally, the company had planned on unveiling this app later in the year, but due to the COVID-19 pandemic, it decided to launch it early to help parents who are now suddenly finding themselves homeschooling their children.

The ad-free app is now available in the U.S., U.K., Ireland, Australia and New Zealand. It includes more than 300 short lessons that teach basic reading and writing skills.