Last updated: October 29, 2026
Techtenstein Services Pvt Ltd ("we", "us") publishes the AI Period & Fertility Tracker app (the "App"). This policy explains what the App does with your information.
1. No account - your data stays on your device
The App has no sign-up or login. We do not collect your name, email address or phone number. Everything you log - period dates, cycle settings, symptoms, moods, sleep, weight, medications, reminders and notes - is stored only on your device. We do not run a server that stores your health data, and we cannot see it.
2. AI insights (optional, only with your permission)
AI features stay off until you choose "Allow AI". If you allow AI, the text you enter for a specific AI request (for example a question to the assistant or the details on the screen you ask about) and, only if you start a skin analysis, the photo you select, are sent over an encrypted connection to our AI service. Our service forwards the request to Anthropic's Claude model to generate the reply and returns it to the App. Our service does not store the content of requests or replies. Anthropic processes requests under its commercial API terms and does not use them to train its models. You can turn AI off at any time in Settings > AI insights. AI replies are general information, not medical advice.
3. Health Connect
If you choose "Sync health data", the App reads your step count and sleep from Health Connect with your permission. This data is used only on your device, is never sent to us, to advertisers or to the AI service, and is never used for advertising. Use of information received from Health Connect follows the Health Connect Permissions policy, including the Limited Use requirements.
4. Advertising
The free version shows ads from Google AdMob, including Unity Ads through AdMob mediation. These providers may collect your device's advertising ID, IP address and ad interaction data to show and measure ads, under their own privacy policies. Where the law requires it (for example in the EEA, UK and Switzerland) we ask for your consent first using Google's consent form; you can change your choice in Settings > Ad privacy choices. Your health data is never shared with advertising networks or used to target ads. Buying Remove Ads or Plus turns all ads off.
5. Purchases
Purchases are processed by Google Play or Samsung Galaxy Store. The App receives only whether a purchase is active. We never receive your payment details.
6. Camera, notifications and partner sharing
The camera is used only to scan a partner QR code (processed on your device) or to take or choose a photo for skin analysis (sent to the AI service only as described in section 2). Reminders are scheduled on your device; no push notification service is used. Partner sharing creates a QR code on your device containing only what you choose to share.
7. Your choices and deletion
You can export everything you logged (Settings > Export my data) and delete it all (Settings > Clear my data). Uninstalling the App also removes it. Because we do not store your data, there is no server copy to delete. You can withdraw AI and ad consent in Settings at any time.
8. Children
The App is not directed at children under 13, and we do not knowingly collect information from children.
9. Security
Your data is kept in the App's private storage on your device. Requests to the AI service use encrypted HTTPS connections.
10. Older versions
App versions 2.3.0 and earlier send the text of AI requests directly to Google Gemini or OpenRouter AI services without the permission step in section 2, do not show the ad consent form in section 4, and do not offer purchases. Please update to the latest version.
11. Changes
We will post any changes on this page and update the date above.
12. Contact
Email: contact@techtenstein.com
Company: Techtenstein Services Pvt Ltd