Your money is private. So is your data.
Last updated · April 29, 2026
What we collect
The minimum needed to run the product: an email or device-bound passwordless ID, the transactions and budgets you enter, and a device push token so we can remind you about scheduled bills (you control this in Settings).
What we never collect
Bank passwords. Open-banking tokens. Browsing history. Location. We don't run third- party trackers, ad networks, or session-replay tools. We don't sell anything to anyone.
Where data lives
In a Supabase Postgres database in ap-northeast-1 (Tokyo), encrypted at rest. Each row is scoped to your household via Postgres row-level security — no other household, and no other yen-yen user, can read it.
When AI sees data
Only the bank-statement lines you paste into the parser, and only at the moment you paste them. The AI provider receives those lines, returns parsed transactions, and we log token counts and cost per parse so you can audit it (Settings → AI usage).
Export and delete
You can export your full ledger as CSV or QIF anytime, with one tap, free. You can delete your account and all associated data from Settings → Account → Delete. Deletion is hard delete, propagated within 24 hours.
Contact
Email us at kensaurus@gmail.com. A real person reads every message, usually within a day or two.