Only EnglishQoostar is a free iPhone messenger service application that allows communication in foreign language, e.g. English. Features - Free SNS foreign language (English) learning program - Supports flexible group chatting system - Can create groups in the category and subscribe to them - Users can freely communicate through forum feature - As a micro-blogging service for iPhone, users around the world can learn foreign language (English) and share pictures and links to ultimately produce a new culture. - All global users of Qoostar can become contacts and chat one-on-one. - No language other than English can be used. - We will reflect on users opinions and suggestions through regulate updates.