Legal · revised 3 October 2026
Privacy notice
This notice explains what personal data the Site collects, why, where it is kept and what your rights are. The controller is KSC.JUSNREM, reachable at contact@ksc-jusnrem.io.
What we collect
| Data | Why | Kept |
|---|---|---|
| E-mail address, optional name | Your account, sign-in links, receipts and service messages | While the account exists |
| Purchase and subscription records | Delivering what you bought, receipts, tax and accounting | Seven years, as accounting law requires |
| Newsletter address and consent | Sending the newsletter you asked for | Until you unsubscribe |
| Engine conversations and Act Test records | Showing you your own history; improving the Engine’s instructions in aggregate | Until you delete them or the account |
| Server logs | Security and fault-finding | Thirty days |
We do not run advertising, we do not sell data, and the Site sets only the cookies needed to keep you signed in.
Who processes it
- Supabase hosts the database and sign-in service (project region: Asia Pacific, Seoul).
- Vercel serves the Site.
- Paddle, Lemon Squeezy and Stripe take payments. Card details go to them, never to us; where Paddle or Lemon Squeezy is merchant of record it is the seller of record and a controller of your payment data under its own notice.
- Resend sends transactional e-mail and the newsletter.
- Anthropic runs the language model behind the Intelligence Engine; the text you send to the Engine is processed by Anthropic under its API terms and is not used to train its models.
Your rights
You may ask for a copy of your data, correct it, delete your account and its data, or object to a use, by writing to contact@ksc-jusnrem.io. Readers in the European Economic Area and the United Kingdom have the rights set out in the GDPR, including the right to complain to a supervisory authority. The newsletter is sent only after you confirm by e-mail (double opt-in) and every issue has an unsubscribe link.
International transfers
The processors above operate in Japan, the United States and the European Union under their published safeguards (standard contractual clauses or equivalent). Payment partners keep records in the jurisdictions their regulators require.
Changes
The date above shows the current version. Material changes are announced on the Site.