Transparent Language Online is a mobile extension of the Transparent Language platform that requires an existing account for activation. The app offers a broad suite of learning tools, including alphabet lessons, a supplemental vocabulary bank with native pronunciation, and core activities that develop listening, speaking, reading, and writing skills. It organizes content into structured courses and provides smart insight that tracks progress and prompts review at appropriate intervals. The service supports a large catalog of languages, making it a comprehensive solution for on-the-go language study.