Last updated · 2026·07·08
This page is maintained by the Kotonoha team to explain our data practices. It is not a certification or external audit.
What we collect · 収集
Your email, display name, avatar (if you set one), and learning activity (which words you've reviewed, streak, JLPT goal). We do not collect precise location or contacts.
How we use it · 用途
To run the spaced-repetition schedule, personalize decks, and remind you at your chosen study time.
Subprocessors · 委託先
Authentication and database hosting via our infrastructure provider. Payment processing via our chosen provider (currently Paddle) when you subscribe.
Retention · 保管
We keep your account data until you delete it. On deletion, your profile and study history are removed within 30 days.
Your rights · 権利
You can export your data or delete your account from Settings. Contact privacy@kotonoha.app for any request.
Cookies · 通信記録
We use only the session cookies required to keep you signed in. No third-party advertising trackers.