Privacy Policy
LUNASEAL ("we") runs the Saju Hunters app and website (the "Service"). This policy explains what personal information we process and why. If the Korean version and this English version differ, the Korean version prevails for users in Korea.
1. What we process and why
| Type | Items | Purpose |
|---|---|---|
| Reading input (required) | Birth date, birth time (or "unknown"), solar/lunar calendar, sex | Calculating your saju chart and generating readings |
| Reading input (optional) | Nickname, topic, job/situation/worry text, relationship status, questions and chat messages, your "fits / doesn't fit" answers | Tailoring readings and answering questions |
| People & family maps (optional) | Nickname, relationship and birth date/time of people you add | Compatibility and relationship readings |
| Generated automatically | Anonymous account ID (random per install), access time, error logs | Charm balance and purchase records, abuse prevention, troubleshooting |
| Purchases | Product, time, transaction ID (receipt data from Apple/Google) | Granting charms, verifying purchases, refunds, legally required records |
| Launch alert sign-up (web, with consent) | Email, language, referral source | One launch email, then deleted promptly |
| Test-version usage log (pre-launch test site only) | Screens visited, your "fits / doesn't fit" answers, purchase attempts, errors, AI-generated reading text and questions (names masked), device type, anonymous ID | Improving the Service before launch (accuracy, writing quality, confusing screens). Deleted before launch |
| Notifications (if you allow) | Opt-in status and preferred time | Sending reminders you asked for |
We never receive your card or payment details; Apple (App Store) and Google (Google Play) handle payments.
If you add someone else's details, please tell them and get their consent. We use that information only for compatibility readings, and by default it stays on your device.
2. Where data is stored and for how long
- Web rarity test (sajuhunter.com): your birth date is calculated inside your browser only and is never sent or stored. Invite links carry a short chart code used for compatibility, not your birth date.
- On your device: readings (your vault), people list, birth details and situation notes. Deleting the app or using "Reset" in the app removes them.
- On our servers: anonymous account ID, charm balance, purchase and usage records, daily usage counts. Birth details and questions sent to create a reading are used only for that reading and are not stored separately on our servers. On the pre-launch test site (sajuhunter-app.web.app) only, we keep the "test-version usage log" above — never birth dates — and delete it all before launch.
- Retention: account data until you ask us to delete it or the Service ends. Records we must keep by Korean law: contracts, withdrawals, payments and delivery — 5 years; complaints and disputes — 3 years; access logs — 3 months.
3. Service providers
| Provider | Task |
|---|---|
| Google LLC (Firebase, Google Cloud, Vertex AI) | Server hosting, data storage (Seoul region), anonymous sign-in, AI reading generation |
| Apple Inc. / Google LLC (Google Play) | In-app payment processing |
AI readings are generated with Google's generative AI (Gemini). Under Google Cloud's terms, Google does not use the data we send to train its models.
4. International transfer
To create AI readings, your chart (calculated from your birth details), questions and chat text, nickname, and the nicknames, relationships and charts of people you add may be processed by Google LLC in the United States or other countries where Google Cloud operates. Data is sent over an encrypted connection each time you request a reading, used only to generate it, and not kept by us afterwards. If you don't request AI readings, nothing is transferred, but AI readings won't be available.
5. Sharing
We don't sell personal information or share it with third parties without your consent, except where required by law. When you tap "Share" or "Copy", the reading goes wherever you choose to send it.
6. Children
The Service is for people aged 14 and older. We don't knowingly collect information from children under 14 and will delete it promptly if we learn of it.
7. Your rights
You can ask to access, correct, delete or stop processing your information at any time.
- Data on your device: edit it in the app or delete it with "Reset".
- Data on our servers (account, charms, purchases): use "Delete account" in the app or email hello@sajuhunter.com. We'll act within 10 days. Records the law requires us to keep are stored separately until their retention period ends.
- Remaining charms can't be restored after account deletion.
Depending on where you live (for example, California), you may have additional rights; contact us at the address above to use them. We don't sell or "share" personal information for targeted advertising.
8. Security
- Encryption in transit (HTTPS) and at rest (Google Cloud default encryption)
- Server access limited to the owner account with two-step verification
- AI credentials kept in a separate secret store
- Database rules that stop the app from reading other users' data
9. Cookies and tracking
We don't use advertising cookies or advertising IDs. Only what the app needs to work (settings, your vault) is saved in your device's storage.
10. Contact
Privacy officer: Kim Jayon (金梓然) (Representative) · hello@sajuhunter.com
11. Changes
We'll announce changes in the app and on this site at least 7 days before they take effect (30 days for important or unfavorable changes).