ClueLuma

Privacy Policy

Effective date: October 12, 2026

Summary

You can use the free trial without an account. If you create an account or buy the full version, we keep only what we need to run it: your email address, your license, and (if you log in) your study records so they sync between devices. We do not sell your data, show ads, or use tracking tools. We use Cloudflare Web Analytics, which counts page visits without cookies and without identifying you.

Without an account

Your study progress (cards, answers, mock exam results, favorites, settings) is saved only on your device, in the app's browser storage. We cannot see it (except the anonymous answer statistics below).

Anonymous answer statistics

To show how many people got a question right, the app sends the first answer you give to each question: the question number, whether it was right, and the option you picked. It is added to a running total for that question. No account, name or email is sent with it, and you can turn it off in Settings.

With an account

When you log in with Google or an email code, we store your email address, a Google account ID (for Google login), and login sessions. Your study records are copied to our server so you can continue on another device. Language, theme and sound settings stay on each device.

Purchases

Payments are processed by Lemon Squeezy. We receive your email address, license key, order number and license status so we can unlock the full version. We never receive your card details.

Service providers

Cloudflare (hosting and database), Google (Google login), Resend (sending login codes) and Lemon Squeezy (payments) process data for us only to provide these features. The app also loads a font from Google Fonts, which may see your IP address.

Backup files

"Save backup file" creates a file on your device. You decide where it goes. We never receive it.

Keeping and deleting data

We keep account data while your account exists. Log out to stop syncing on a device. To delete your account, open Settings → Account → "Delete account". This removes your login and the study records saved to your account from our server. We keep a minimal purchase record (license key, purchase email and status) so your purchase still works if you log in again, and for refunds and legal records. To have that removed too, email [email protected] from the address you used to buy. "Reset records for this exam" in Settings deletes the records on your device.

Children

The app is not directed at children under 13 and does not knowingly collect their data.

Changes and contact

If this policy changes, we will update this page and the date above. Contact: [email protected]