Privacy Policy

Last updated November 6, 2026

This Privacy Policy for Base Nine Studios (“we,” “us,” or “our”), describes how and why we access, collect, store, use, and share (“process”) your personal information when you use the Practitioner's Atlas app for Android (the “App”), this website, or otherwise contact us (together, the “Services”).

Questions or concerns? Reading this policy will help you understand your privacy rights and choices. If you have any questions, email us at apps@baseninestudios.com.

Summary of key points

• Do you need an account? No. The App has no accounts and no sign-in, and we never ask for your name or email address to use it.
• Where does your work live? On your phone. Your chart, the people you read for, their notes and sessions, and everything you save are kept in the App's own storage on your device.
• Do we sell or share your information? No. We do not sell personal information, do not share it for advertising, and the App has no advertising, analytics, or tracking.
• What do we receive? If you subscribe, your purchase history, under an anonymous app user ID. If you redeem a code, a record of that redemption. If you switch on cloud backup, an encrypted copy of your saved work that we cannot read. Nothing else, and all of it is encrypted in transit.
• Do we process sensitive information? Birth details and notes about the people you work with can be sensitive. They stay on your phone, and in your backup only in encrypted form, so we never see them.
• What are your rights? Depending on where you live, you may have rights to access, correct, delete, or port your information. Because almost everything is on your device, you can exercise most of them yourself in the App. Learn more about your privacy rights.

Table of contents

1. What information do we collect?
2. How do we process your information?
3. When and with whom do we share your information?
4. Do we use cookies or other tracking technologies?
5. What does the App ask permission for?
6. What happens on this website?
7. Is your information transferred internationally?
8. How long do we keep your information?
9. Do we collect information from minors?
10. What are your privacy rights?
11. Controls for Do-Not-Track features
12. Do we make updates to this policy?
13. How can you contact us about this policy?
14. How can you review, update, or delete your data?

1. What information do we collect?

Information kept on your device

In short: What you enter in the App stays on your phone. We don't receive it.

To do its job, the App saves the following in its own storage on your device. None of it is sent to us.

• Charts. The birth dates, times, and places you enter, for yourself and for the people you read for.
• People and sessions. Names or labels you give the people you work with, your notes about them, and the logs of sessions you run, including what was played, drawn, or read.
• Your Library. Frequencies, notes, oils, words, colors, card draws, I Ching casts, Atlases, compositions, and the notes you write.
• Sound files you add. A song or recording you pick from your phone is played from your phone. It is not uploaded and is not included in backups.
• Settings. The disciplines you practice, your toolkit, tuning, theme, and similar choices.

Birth details and session notes can be personal information about you and about the people you work with, and notes may touch on their wellbeing. If you keep records about other people, you are responsible for having their permission and for handling their information lawfully.

Information we receive

In short: Only your purchase history, a record of any code you redeem, and an encrypted backup if you switch backup on.

• Subscription information. If you subscribe, Google Play processes the payment. We receive, through RevenueCat, your subscription status, product, transaction identifiers, purchase and renewal dates, and country of purchase, tied to an anonymous app user ID created for your install. We do not receive your name, email address, or payment-card or banking details.
• Code redemptions. If you use Redeem a code, the App sends the code, your anonymous app user ID, and your IP address to a Firebase Cloud Function we run. The IP address is used only to limit how often codes can be tried. The function stores a redemption record (the code, the app user ID, and the time) in Cloud Firestore so the code's access can be granted and the code can't be reused.
• Encrypted backup. If you subscribe and switch on cloud backup, the App copies your saved work, as text, to storage we run on Google Firebase. It is encrypted on your phone before it is sent, with a key made from a passphrase only you know, so we cannot read it. A backup contains no photos, audio, or location data beyond the birth places in your charts, and it is tied to a random identifier rather than to an account.

Everything the App sends over the internet is encrypted in transit (HTTPS/TLS).

Information logged automatically

In short: The services the App talks to keep standard request logs. We don't run analytics or tracking.

When the App checks your subscription, redeems a code, or sends a backup, the servers of RevenueCat and Google record standard information about the request, such as the IP address it came from, the time, and the device's user-agent. These providers keep those logs to operate, secure, and debug their infrastructure under their data-processing terms; we do not use them for analytics or marketing.

The App does not include Firebase Analytics, Firebase Crashlytics, Firebase Performance Monitoring, advertising SDKs, or any third-party tracking SDK such as Sentry, Mixpanel, Amplitude, Segment, Adjust, AppsFlyer, or Branch.

2. How do we process your information?

In short: To give you what you subscribed to, keep your backup, answer you, and comply with law.

• To provide the Services. To unlock subscriber features, to honor codes you redeem, and to store and restore your encrypted backup.
• To respond to you. When you email us, we use your message and email address to answer and to help with any problem.
• For security and fraud prevention. To confirm that purchases are genuine and to limit repeated code attempts.
• To comply with our legal obligations. To respond to legal requests and to exercise, establish, or defend our legal rights.

We will not process your information for other purposes without your consent.

3. When and with whom do we share your information?

In short: Only with the providers that run the subscription and the backup. We do not sell your information or share it for advertising.

• Service providers (sub-processors). Each receives only what it needs for the function listed, and only on our instructions.
  • Google Play Billing: sells and bills subscriptions, manages free trials, renewals, cancellations, and refunds. Receives: your Google Play account and payment details, under Google's own privacy policy. Provider: Google LLC (United States).
  • RevenueCat: confirms your subscription with Google Play and tells the App which features to unlock. Receives: the random identifier for your install, purchase and receipt data from Google Play, and standard request data. Provider: RevenueCat, Inc. (United States).
  • Google Firebase (Cloud Functions, Cloud Firestore): checks and records code redemptions, and stores your encrypted backup. Receives: the code, your anonymous app user ID, your IP address (for rate limiting), the encrypted backup, and standard request data. Provider: Google LLC (United States).
• Space weather. Home's Kp index and solar wind readings come from the U.S. National Oceanic and Atmospheric Administration's Space Weather Prediction Center. The App asks for the public readings directly; nothing about you is sent with the request, though like any website, NOAA's servers see the request's IP address.
• Business transfers. If we are involved in a merger, sale of company assets, financing, or acquisition, your information may be transferred as part of that transaction. We will notify you and the commitments in this policy will continue to apply.
• Legal requirements and safety. We will disclose information if required by law, regulation, court order, subpoena, or other valid legal process.

We do not sell or rent personal information, do not share it for cross-context behavioral advertising, and have no business-partner arrangements that involve your data. Places are looked up in a list built into the App (from GeoNames, used under CC BY 4.0), so typing a place sends nothing.

4. Do we use cookies or other tracking technologies?

In short: No.

This website does not set cookies and does not load Google Analytics, Google Tag Manager, the Meta pixel, or any other analytics or advertising script, web beacon, or tracking pixel. The App does not embed analytics or advertising SDKs. The only storage involved is the App's own storage on your device.

5. What does the App ask permission for?

In short: Internet access and background audio playback. Nothing else.

The App uses internet access (for space weather, subscriptions, and backup) and a foreground media-playback service, so a session can keep playing with the screen off. It does not ask for or use your location, camera, microphone, contacts, photos, or notifications.

6. What happens on this website?

In short: The Atlas on the home page runs in your browser and keeps nothing.

This is a static website. The Atlas at the top of the home page runs entirely in your browser: what you type (a birth date, a place, frequencies, words) is worked out in the page, is never sent anywhere, and is gone when you close the tab. The place list it searches is downloaded from this site the first time you type a place. Our web host keeps standard server logs, such as IP addresses and the pages requested, for security and operation.

7. Is your information transferred internationally?

In short: What we receive is processed in the United States.

RevenueCat and Google Firebase process the information described above in the United States. If you are in the European Economic Area, the United Kingdom, or Switzerland, those countries' data protection laws may differ from the laws of the United States. We rely on our providers' data-processing terms, including standard contractual clauses where they apply, and will protect your information in accordance with this policy and applicable law.

8. How long do we keep your information?

In short: Only as long as needed for the purposes in this policy.

• On your device: until you delete it, clear the App's data, or uninstall the App.
• Your backup: until you switch backup off or delete it, or ask us to delete it.
• Redemption records: for as long as the access a code grants lasts, and as needed to stop the code being reused.
• Subscription records: for as long as RevenueCat and Google Play keep them for billing, tax, and accounting obligations.
• Emails to us: for as long as needed to help you, and then deleted.

9. Do we collect information from minors?

In short: We do not knowingly collect data from or market to children under 18 years of age.

The Services are intended for adults. We do not knowingly collect, solicit data from, or market to children under 18, nor do we knowingly sell such personal information. If you become aware of any data we hold from a child under 18, contact us at apps@baseninestudios.com and we will delete it.

10. What are your privacy rights?

In short: You control almost everything from inside the App. Depending on where you live, you may also have rights under U.S. state privacy laws or the laws of your country.

Withdrawing your consent

You can switch off cloud backup in the App at any time, which stops new backups. Withdrawing consent does not affect processing carried out before you withdrew it.

Because we have no accounts

We can't look up your information by name or email, because we don't have either. To act on a request about your backup or subscription records, we may ask for your Google Play order number or other details that show the request is yours.

California residents (CCPA / CPRA)

If you are a California resident, the California Consumer Privacy Act, as amended by the California Privacy Rights Act, gives you the following rights:

• Right to know and access the personal information we have collected about you, its sources, its purposes, and the categories of third parties we disclosed it to.
• Right to delete the personal information we have collected from you.
• Right to correct inaccurate personal information.
• Right to data portability. Settings → Your data → Export everything gives you a copy of everything you have made in the App, free.
• Right to opt out of sale and sharing. We do not sell or share your personal information for cross-context behavioral advertising, so there is no “Do Not Sell or Share My Personal Information” link to display.
• Right to limit the use of sensitive personal information. We do not receive sensitive personal information in readable form, so there is nothing to limit.
• Right to non-discrimination. We will not deny services, charge different prices, or provide a different quality of service because you exercised any of these rights.

To exercise these rights, email apps@baseninestudios.com. We will respond within the time required by California law. You can designate an authorized agent to make a request on your behalf; we will require proof of your authorization.

Other U.S. state privacy rights

If you are a resident of Colorado, Connecticut, Delaware, Iowa, Maryland, Minnesota, Montana, Nebraska, New Hampshire, New Jersey, Oregon, Rhode Island, Tennessee, Texas, Utah, or Virginia, your state's consumer privacy law gives you most or all of the following rights: to confirm whether we process your personal information and to access it; to delete it; to correct it; to obtain a portable copy; and to opt out of its sale, targeted advertising, and certain profiling. We do not sell personal information, do not engage in targeted advertising, and do not profile. To exercise any of these rights, email apps@baseninestudios.com. If we deny your request and your state recognizes an appeal right, you may appeal by replying to our response within 30 days; if we do not resolve the appeal to your satisfaction, you may contact your state attorney general.

EEA, UK, and Switzerland residents

You have rights under the GDPR or its local equivalent, including the rights of access, rectification, erasure, restriction of processing, data portability, and to object to processing, and the right to lodge a complaint with your local data protection authority. The legal bases we rely on are performance of a contract (for your subscription, code redemptions, and backup), your consent (for switching backup on), and our legitimate interests (for fraud prevention, rate limiting, and security). To exercise these rights, email apps@baseninestudios.com.

11. Controls for Do-Not-Track features

Most web browsers and some mobile operating systems include a Do-Not-Track (“DNT”) setting. No uniform standard for recognizing DNT signals has been finalized, so we do not respond to them. Because we do not track you, there is nothing for such a signal to turn off. If a standard is adopted that we must follow, we will describe it in a revised version of this policy.

12. Do we make updates to this policy?

In short: Yes, as needed to stay accurate and compliant.

The “Last updated” date at the top shows the current version. When we make material changes, we will post a prominent notice on this website or in the App.

13. How can you contact us about this policy?

Email apps@baseninestudios.com, or write to us at:

14. How can you review, update, or delete your data?

Step-by-step instructions are on the Your data page.

• Edit or delete any chart, person, item, or session in the App.
• Export everything you've made from Settings → Your data → Export everything (free for everyone).
• Switch off or delete your cloud backup in Settings → Your data.
• Clear all of the App's data in Android: Settings → Apps → Practitioner's Atlas → Storage → Clear data, or uninstall the App.
• Cancel a subscription in Google Play. Uninstalling the App does not cancel it; see the Terms of Use.
• To ask us to delete any information we hold about you, such as a redemption record or a backup, email apps@baseninestudios.com.
• For anything else, email apps@baseninestudios.com. We will respond within the time required by applicable law.