Privacy Policy
Lumira Baby ("the App", "we", "us", "our"), operated by Tranquil Mind Technology JSC, respects your privacy. This Privacy Policy explains what information we collect, how we use and share it, and the choices and rights you have. By using the App, you agree to this Policy.
Lumira Baby is a period, cycle and pregnancy tracker. You can use core tracking on this device without an account. If you choose to sign in or pair with a partner, some data is synced to our cloud provider so those features can work.
1. Information we collect
Data you provide. Cycle and period dates, symptoms, pregnancy and due-date information, reminders, a display name and (optionally) a profile photo you select from your device.
Account data. If you sign in (including with Google Sign-In), we process your account identifier and email address to authenticate you and enable cloud sync and partner pairing.
Data collected automatically. Device and advertising identifiers, approximate (IP-derived) location, app activity and interactions, and crash logs and diagnostics.
Purchase status. Whether you hold an active Premium subscription (we do not receive your card or payment-card details — those are handled by Google Play).
2. How we use information
To provide and operate the App; to predict your cycle, fertile window, ovulation and pregnancy timeline; to sync your data and enable partner pairing when you opt in; to send reminders you enable; to show and measure advertising; for analytics and improvement; to process subscriptions; for fraud/security; and for legal compliance.
3. Third-party services
The App uses the following data-transmitting services. Each processes data under its own privacy policy:
| Service | Purpose | Policy |
|---|---|---|
| Google Firebase (Authentication, Cloud Firestore, Analytics, Crashlytics, Remote Config) | Sign-in, cloud sync, partner pairing, analytics, crash reporting, configuration | https://firebase.google.com/support/privacy |
| Google Sign-In | Optional account sign-in | https://policies.google.com/privacy |
| Google AdMob | Advertising and mediation | https://policies.google.com/privacy |
| Meta Audience Network | Ad mediation | https://www.facebook.com/about/privacy |
| AppLovin | Ad mediation | https://www.applovin.com/privacy/ |
| Pangle | Ad mediation | https://www.pangleglobal.com/privacy |
| Mintegral | Ad mediation | https://www.mintegral.com/en/privacy/ |
| Liftoff / Vungle | Ad mediation | https://vungle.com/privacy/ |
| InMobi | Ad mediation | https://www.inmobi.com/privacy-policy |
| DT Exchange (Digital Turbine / Fyber) | Ad mediation | https://www.digitalturbine.com/privacy-policy/ |
| Unity Ads | Ad mediation | https://unity.com/legal/privacy-policy |
| Moloco | Ad mediation | https://www.moloco.com/privacy-policy |
| Adjust | Attribution and analytics | https://www.adjust.com/terms/privacy-policy/ |
| Google Play Billing | Processing subscriptions | https://policies.google.com/privacy |
Advertising consent (UMP). Where required (e.g. the EEA/UK), we show a Google-certified consent message before serving personalized ads and honor your choice.
Reset or opt out of your advertising ID. You can reset or delete your advertising ID in your device settings (Android: Settings → Google → Ads) to limit ad personalization.
4. How we share information
We do not sell your personal information for money. We share data with the third-party services listed above so the App can function. Because advertising may be personalized, some U.S. state laws treat this as "sharing"/"targeted advertising"; you can opt out as described in Sections 3 and 7. We may also disclose information for legal reasons or in a business transfer.
5. Legal bases (EEA/UK — GDPR)
Consent (personalized ads and analytics where required); legitimate interests (core functionality, security, improvement); and contract or legal obligation (authentication and purchases).
6. Data retention
We keep information only as long as necessary to provide the App or as required by law. Cycle/health data you sync is retained until you delete it or your account. Advertising/analytics identifiers and crash diagnostics are retained for limited partner-defined periods.
7. Your rights
Depending on your region you may have rights to access, correct, delete, port, object to or restrict processing, and withdraw consent (GDPR); to know, delete, correct, and opt out of "sale"/"sharing" and targeted advertising (CCPA/CPRA); and similar rights under LGPD, PIPEDA and other laws. To exercise them, contact us at support@tranquilmind.co. If you use the App without an account, please include your advertising ID/device details so we can locate your data.
8. Data deletion
You can delete synced data from within the App, or request deletion by emailing support@tranquilmind.co. On-device data is removed when you uninstall the App.
9. Children's privacy
The App is intended for adults (18+) and is not directed to children. We do not knowingly collect personal data from children. If you believe a child has provided data, contact us and we will delete it.
10. International transfers
Your information may be processed in countries other than your own, including by the third-party services above. We rely on appropriate safeguards where required.
11. Changes to this Policy
We may update this Policy from time to time. Material changes will be reflected by the "Last updated" date above.
12. Contact
Tranquil Mind Technology JSC — No. 3, Alley 98, Vu Trong Phung Street, Thanh Xuan Ward, Hanoi City, Vietnam. Email: support@tranquilmind.co
© 2026 Tranquil Mind Technology JSC (@Tranquil Mind Technology JSC). All rights reserved.