Last updated: July 2, 2026
Tonchi is a learning app. You can use it without an account — in that case all progress is stored only on your device and nothing is collected.
If you choose to create an account, we store your email address and learning progress (streaks, scores, completed lessons) so they sync across devices. This data is held with our backend provider (Supabase) and is never sold, shared, or used for advertising.
Tonchi contains no ads, no trackers, and no third-party analytics. Speech-recognition practice runs on-device.
To delete your account and all associated data, contact [email protected].