Challenge English

Challenge English is a tools app by Benesse Corporation with 5,000+ downloads (about 9.8K estimated). +30 installs in the last 7 days. Released Mar 24, 2019. Install growth, rank history, SDKs and ad networks.

From the store listing: “This is an English learning app for elementary school students that allows each child to learn at a level that suits them best. It helps children develop reading, writing, speaking, and listening skills in a balanced way, and they can acquire English skills up to the level of a third-year junior high school student.”