Education apps in today's App Store charts in the same countries as this app.
Lil' Clock
Planet Jone
AnkiMobile Flashcards
Anki Software, LLC
Duolingo:英語、韓国語、中国語を学ぼう
Duolingo
Dr. Panda's Ice Cream Truck
Dr. Panda Ltd
Moji Clock Trainer English
Extransit
The Earth by Tinybop
Tinybop Inc.
PhET Simulations
University of Colorado Boulder