Privacy Policy
Last updated: 2026-06-17
What we collect by default: nothing
Your GPA, age, TOPIK level, and the result are all worked out inside your own browser. We don't store them, and the calculation never sends them to our analytics or a database.
One honest exception: if you copy and share your result link, your GPA travels inside that link's web address. Anyone you send it to (and the server that loads it) can read it from the URL, and it may be recorded in that server's standard access logs. Our app doesn't save it to a database, but it isn't a secret value, so don't share the link if you'd rather keep your GPA private.
Email (deadline alerts)
We collect your email address only if you choose to opt in to GKS deadline alerts. Nothing else is ever attached to it: no GPA, age, TOPIK level, or result.
You confirm first (double opt-in). After you submit your address we send a confirmation email; you start receiving deadline alerts only after you click the link to confirm. Until you confirm, we send you nothing.
Who stores it. Your email, your subscription status, and a small consent record (which version of this copy you agreed to) are stored by our email provider, Buttondown (a service based in the United States), so that we can send the alerts. No GPA, age, TOPIK level, or result is ever sent to them. We do not send your IP address to them either; like any web service, Buttondown automatically records the network metadata of our server's request (our server's own IP, not yours).
Unsubscribe or delete. Every email has a one-click unsubscribe link that stops the alerts. To remove your data entirely, email studysunbae@gmail.com and we will permanently delete your subscriber record, including the consent record.
How long we keep it. We keep your email only while you are subscribed. Unsubscribing stops the emails; a deletion request permanently removes your address and consent record from our email provider. We aim to handle deletion and other privacy requests within 7 business days.
Abuse protection. To stop spam to the sign-up form, we briefly keep a keyed hash tied to the rate-limit time window instead of your IP address in any readable form. It expires automatically and is not used to identify you.
Analytics
When configured, we use privacy-friendly, aggregate analytics (GoatCounter) to count page visits and feature use. It records no raw GPA, age, TOPIK level, or email, and no precise result or country-and-score combination; your result link's query (which carries your GPA) is stripped from everything sent to analytics. It loads only when analytics is configured, stores no tracking identifiers in cookies or local storage, and does no cross-site tracking.
Cookies
The tool needs no cookies to work, and sets none for tracking.
Contact and data requests
For any privacy question (including a request to access or delete anything we might hold about you), contact studysunbae@gmail.com. If you subscribed to deadline alerts, you can unsubscribe with the one-click link in any email, or ask us to delete your address entirely.
Affiliation
StudySunbae is independent and is not affiliated with GKS, NIIED, or the South Korean government. It is an unofficial pre-check, not an admissions decision.