NURI — Korean Astrology
Privacy Policy
Last updated: 29 August 2026
NURI reads Korean Four Pillars (사주) charts. To do that we need your birth details. This page explains exactly what we keep, why, and how to get rid of it.
1. Who we are
NURI is made by an independent developer. For any question about this policy or your data, write to tkbstudiollc@gmail.com. We answer privacy requests within 30 days.
2. What we collect
If you never sign in
Your chart is calculated on the device and stored only in the app's local storage. Clearing the app's data erases it, and we never had a copy. The one thing that does leave your device is an anonymous visit count, described next.
Counting visits (everyone)
We count how many people open NURI, so we know whether anyone is using it. We built this ourselves — no Google Analytics, no third party, nothing sold or shared.
| What we record | Why |
|---|---|
| An anonymous visitor number, made by scrambling your IP address beyond recovery (a one-way hash, mixed with a secret and with the current month) | To count people rather than page loads, and to see how many come back. The scrambling changes every month, so the number cannot be followed past it |
| When the visit started and when you were last active in it | To know roughly how long people stay |
| Which page you arrived on, the website that linked you (the site name only, never the full address), your app language, and whether you used the app or the web | To know where visitors come from and which language to write in |
| Which of the app’s five screens you opened, and roughly how many seconds you spent on each | To see which parts of the app people actually use, so we know what to improve. Only the screen names — never what you read, asked, or entered |
Your IP address itself is never stored. We do not set cookies, we do not store any identifier on your device, and this is never linked to your account, your chart or your questions — even when you are signed in. These records are deleted after 180 days.
If you sign in with Google
| What | Why |
|---|---|
| Email address and Google account ID | To identify your account so your charts, coins and questions follow you to a new phone |
| Birth date, birth time, birthplace (city, region, country code, longitude, timezone), sex | This is the reading. The chart cannot be calculated without it. Sex is used only to decide the direction of the 10-year cycles |
| A name or label you type for each saved chart | So you can tell your saved people apart |
| Questions you ask and the answers you receive | To show the conversation and to keep a record of what a coin was spent on |
| If you start a two-chart reading: the other person's birth details and the label and relationship you chose for them | Stored with that conversation so follow-up questions read the same two charts. Deleted when you delete the reading |
| Coin balance and purchase records (store transaction ID, product, price, currency) | To give you what you paid for and to handle refund disputes |
| Your device's time zone and chosen language | So "today" means today where you are, and so we write to you in your language |
| Notification token (only if you turn notifications on) | To send your daily reading. Turning notifications off in your phone settings stops it |
| Timestamps of when you last opened the app | To know which accounts are dormant |
We do not collect: your location (we never ask for location permission — the time zone comes from your device's own clock setting), your contacts, your photos, your microphone, your health data, or your advertising ID.
Birth details of other people
The app lets you save charts for other people — a partner, a friend, a family member — and to check compatibility. If you enter someone else's birth details, you are responsible for having their agreement. We store those details in the same way as your own, under your account, and they are deleted when you delete that saved chart or your account.
3. Where your data is stored
On servers in the United States (Supabase, AWS us-east-1).
If you use NURI from outside the United States, your data is transferred there.
4. Who else sees it
| Who | What they get | Why |
|---|---|---|
| Supabase | Everything listed above | They host our database and sign-in. They process it for us and do not use it for their own purposes |
| Anthropic (Claude) | Your chart in coded form, and your question | Only when you use Ask. Your name and email are never sent |
| Sign-in, purchase and notification data | Google Sign-In, Google Play billing, and notification delivery | |
| Google Analytics for Firebase | That a sign-up or a purchase happened, and your device's advertising ID | To see whether our ads bring people who actually use the app. We never send your name, email, birth details or questions |
The events we send to Google Analytics are only sign_up and
purchase. Nothing you read, ask or save is sent. On Android you can turn the
advertising ID off in Settings → Privacy → Ads, and on iOS in
Settings → Privacy & Security → Tracking; the app keeps working.
Our own visit counting stays on our own server and is not shared with anyone.
5. How long we keep it
- Charts, questions and coin records: until you delete them or delete your account.
- Anonymous visit records: 180 days, then deleted automatically.
- Purchase records: kept after account deletion where tax or accounting law requires it.
- Notification tokens: removed when you turn notifications off or sign out.
- A one-way hash of your sign-in email after you delete your account: 72 hours, then deleted automatically. See below.
6. Deleting your data
You can delete a saved chart at any time inside the app. To delete your whole account and everything attached to it, write to tkbstudiollc@gmail.com from the email address you signed in with. We complete deletions within 30 days.
Full instructions — what is deleted, what we must keep and for how long — are on the Delete your account page. You do not need the app installed to use it.
When you delete your account we remove all of it. We keep a one-way hash of the email you signed in with, and nothing else, for 72 hours, so that the same account cannot be deleted and made again over and over to collect the free starting coins. The hash cannot be turned back into your email, it is not used for anything else, and after 72 hours that record is deleted too. You can sign up again after that.
7. Your rights
Depending on where you live, you may have the right to see a copy of your data, correct it, delete it, or object to how we use it. Write to the address above and we will act on it. You do not need to give a reason.
8. Children
NURI is not for children under 13. We do not knowingly collect data from anyone under 13. If you believe a child has given us their details, write to us and we will delete the account.
9. Security
Data is encrypted in transit. On our database, each row is locked to its owner — one account cannot read another's charts or questions, and that is enforced by the database itself, not only by the app.
10. Changes
If we change this policy we will update the date at the top. If a change materially affects what we do with your data, we will tell you in the app before it takes effect.