Welcome to Ovulens ("we," "our," or "us"). We built this app because we believe that fertility health data is deeply personal — and it should be treated that way. This Privacy Policy explains what information we collect, how we use it, and the choices you have. Please read it carefully. By using Ovulens, you agree to the practices described here.
Last updated: May 2026 · Effective: May 2026
Ovulens collects two categories of information:
| Category | Examples | Where it lives |
|---|---|---|
| Health & Cycle Data (you enter this) |
Period flow, basal body temperature, cervical mucus, LH strip results, mood, energy, symptoms, intimacy, notes | On your device only (Room / SQLite) |
| Ad-related Data (collected automatically) |
Advertising ID, app interactions, general device info | Google's servers via AdMob SDK |
| Crash & Diagnostic Data (if enabled) |
Device model, OS version, crash stack traces (no health data) | Firebase Crashlytics (if integrated) |
Health data you enter is used solely to power app features on your device:
We do not use your health data to train machine learning models, sell to third parties, build advertising profiles, or share with employers, insurers, or governments.
We recommend you:
If you uninstall the app, all locally stored data is permanently deleted from your device.
Ovulens uses the following third-party SDKs. Each has its own privacy policy:
| Service | Purpose | Data shared |
|---|---|---|
| Google AdMob | Show ads to keep the app free | Advertising ID, device info |
| Google Play Services | Core Android platform | Standard Android telemetry |
| Firebase Crashlytics (if enabled) |
Crash reporting | Device model, OS version, crash traces — no health data |
We do not integrate with Facebook, TikTok, Snapchat, or any social media advertising platform.
Ovulens displays ads through Google AdMob to fund free access to the app. AdMob may use your device's advertising ID to show personalized ads based on your interests.
AdMob does not receive any of your cycle or health data. Ads are served based on general app context and your device-level advertising preferences — not your fertility information.
Google's privacy policy: policies.google.com/privacy
Ovulens is designed for adults aged 18 and older. We do not knowingly collect any personal information from anyone under 18. If you believe a minor has used this app, please contact us immediately at the email below and we will take appropriate action.
Depending on your location, you may have the following rights regarding your data:
| Right | How to exercise it |
|---|---|
| Access — see what data we hold | Your data is on your device; view it directly in the app |
| Deletion — erase your data | Delete individual entries in-app, or uninstall to erase all local data |
| Portability — export your data | Use the Export feature (coming in v1.1) or contact us |
| Opt-out of personalized ads | Android Settings → Google → Ads |
| GDPR / CCPA requests | Email us at the address below |
Since your health data lives on your device, you control retention. The data persists as long as the app is installed and you have not deleted it. Uninstalling the app permanently deletes all locally stored data.
For ad-related data, Google's own retention policies apply — typically 18 months for Analytics data.
We may update this Privacy Policy from time to time. When we do, we will update the "Last updated" date at the top, and — for material changes — notify you via an in-app notice or Play Store update description. Your continued use of Ovulens after changes are posted constitutes your acceptance of those changes.
We encourage you to review this page periodically.
If you have any questions, concerns, or requests about this Privacy Policy or your data, please reach out:
Questions about your privacy? Data requests? We respond within 72 hours.
belmospace@gmail.com