What we collect
- Email address: used for sign-in (magic link), watchlist alerts, and billing receipts.
- Your API access key: the personal key that connects our data to your AI tools. It, and the usage counts tied to it, are stored in our database to authenticate you and enforce fair-use limits.
- Your watchlist: the tickers you choose to monitor.
- Usage counts: the number of checks used to enforce fair-use limits.
- Support & access-link requests: if you email us or ask for your access link to be re-sent, we log that request (your email address) to process it.
Service providers and storage
We use service providers only to operate KoreaStockCheck. They process personal data only for the purposes listed below.
- Cloudflare: hosts and delivers the service and stores the account data needed for sign-in, access control, usage limits, and watchlists.
- Resend: sends our transactional email (sign-in links, onboarding, watchlist alerts) to your address.
- Polar and Gumroad: process checkout, billing, and card details. We receive only your email address and subscription status, never your card number.
We use aggregate Cloudflare Analytics without cross-site tracking cookies.
How long we keep it
Account data (email, key, watchlist, usage counts) is kept while your subscription is active and deleted within 30 days of a deletion request. Aggregate, non-identifying statistics may be retained.
What we do not collect
Payment card details are handled entirely by our payment partner and its payment processor; they never reach our servers. We do not sell or share personal data with third parties for marketing.
Your choices
Mute alerts for any watched company from your dashboard; the change takes effect immediately. Email [email protected] to export or delete your data. Account data is deleted within 30 days of a deletion request.
Effective: 2026-08-18