Privacy Policy for Nene
Nene ("the app") is developed by Tegribas Global Limited ("we", "us"). This policy explains what happens to your data when you use Nene. We wrote it to match exactly what the app does.
The short version
Nene stores everything on your device, in an encrypted database. We do not operate any servers, we do not collect analytics, and we cannot see your data — there is no account, no login, and no way for us to access it even if we wanted to.
What data Nene stores, and where
Cycle days, symptoms, notes, medications, fertility observations, and any photos you attach are stored only on your device, in a SQLCipher-encrypted database. The encryption key is generated on-device and held in your platform's secure key store (Android Keystore / iOS Keychain) — it never leaves the device and is never sent to us, because there is nowhere for it to be sent.
Settings (app preferences, theme, reminder times) are stored locally in the same way, on-device only.
Uninstalling the app, or using the in-app "Delete all data" option, permanently erases this data. We hold no copy, because none was ever created outside your device.
Network activity
Nene has no analytics SDK, no crash-reporting SDK, and no general internet access for app data. The only network activity the app ever performs is:
- In-app purchases, processed through Google Play Billing (Android) or Apple's StoreKit (iOS), with RevenueCat as our subscription management provider. RevenueCat receives your purchase/subscription status (product purchased, renewal date, an anonymous device-generated app user ID) to validate the purchase and keep your Premium status accurate — never your cycle, symptom, or any other health data, and never your payment details. Payment information itself is handled entirely by Google/Apple under their own privacy policies; we and RevenueCat never see it.
Optional, opt-in features
These features are off by default and only activate if you explicitly enable them in Settings:
- Health Connect (Android) / Apple Health (iOS) sync — if you turn this on, Nene reads sleep data from, and/or writes period days to, your device's own health data store (Health Connect or Apple Health). This is a device-to-device exchange managed by the operating system — it does not pass through any server we operate, and you can revoke access at any time in your device's health app permissions.
- Biometric app lock — Face ID / fingerprint unlock is handled entirely by your device's own biometric APIs. Nene never receives or stores biometric data; it only receives a yes/no "unlocked" result from the OS.
- Photo attachments (e.g. test strip photos) — stored encrypted (AES-256-GCM) on-device, tied to your device's key. Never uploaded anywhere.
- Notifications — reminder scheduling is local to your device (no push notification server is involved).
Data sharing
We do not share, sell, or transmit your cycle, symptom, or other health data to anyone, because we never receive it in the first place. The one exception described above is a standard purchase-status signal sent to RevenueCat — never app content, never health data. Nene contains no advertising and no ad SDK.
Backups and export
If you use the in-app encrypted backup or CSV/PDF export features, the resulting file is created on your device and saved wherever you choose to save it (device storage, a folder you pick, or a share-sheet destination like email or cloud storage you select). That choice, and everything after it, is under your control — Nene itself does not upload the file anywhere.
Children's privacy
Nene is not directed at children and does not knowingly collect data from children, consistent with the app having no data collection at all.
Changes to this policy
If this policy changes, the effective date above will be updated and the new version will be posted at the same URL.
Contact
Questions about this policy: yobadoba@chisquares.com