Sonus – Structured, free Mandarin language learning

Summary: Sonus offers free Mandarin learning focused on vocabulary, speaking, and travel phrases using real fluency systems. It features lessons structured by HSK levels with interactive modes for learning, quizzing, and speaking practice. The app is built as a no-cost alternative to paid language platforms.

What it does

Sonus provides Mandarin vocabulary organized by HSK bands and includes three lesson modes: Learn, Quiz, and Speak. A Japanese version is in development. The app is free with no subscriptions or paywalls.

Who it's for

It is designed for Mandarin and Japanese learners seeking structured practice without subscription fees.

Why it matters

Sonus addresses the high cost of language apps by offering accessible, structured language learning at no charge.