Pocket Listening is a free Android app developed by SHINKOSHUPPANSHA KEIRINKAN Co.Ltd. It is an educational and reference app designed to complement the English language learning materials published by the company. The app allows users to download audio files and listen to them on their mobile devices, making it convenient for users to learn English anytime, anywhere.

The app also features a helpful tab menu that includes a "Help" section where users can access their purchase history and restore previously purchased items without the need for double billing. Additionally, payments are made through the user's Google account.

Overall, Pocket Listening is a useful app for English language learners who want to improve their listening skills and practice their English on the go. The app is easy to use and provides access to high-quality English audio materials.