This is a starting template written for Kotonoto’s current design. Review it — ideally with a professional — and fill in the operator details before opening the service to the public.
Kotonoto is a personal notebook for language learners, run by its operator on self-hosted infrastructure. This policy explains what data it holds and what is done with it.
What is stored
- Account — your email address and a hashed password, plus session records (creation time, IP address, user agent), managed by the authentication library.
- Your content — the folders, notes and saved vocabulary you create.
- Usage — a per-month counter of AI explanation generations, and any 👍/👎 feedback you leave on an explanation.
- Local preferences — your browser stores which note you last opened and which folders are collapsed. These never leave your device except the last-note pointer, sent as a cookie so the app can reopen it.
Cookies
Only functional cookies are used: a signed session cookie to keep you logged in, and kotonoto.lastDoc to remember your last open note. There is no analytics or advertising tracking.
Processing and third parties
- When you ask for an explanation, the selected word and its surrounding sentence are sent to Google’s Gemini API to generate the pedagogical text. Dictionary facts (readings, meanings) come from open lexical data and are never generated by AI — see Data attributions.
- Data is stored in a PostgreSQL database on the operator’s server. It is not sold, rented, or shared for marketing.
Your rights
- Export — download everything as JSON from Settings at any time.
- Deletion — deleting your account from Settings permanently erases your account and all associated content.
- Depending on where you live, you may have additional rights (access, rectification, objection). Contact the operator to exercise them.
Retention
Content is kept until you delete it or your account. Deleted notes and folders sit in the trash until you empty it, then they are gone.
Contact
Questions about this policy or your data: [operator contact address].
Last updated: [date].