YOYO Cycle Tracker Privacy Policy
Effective date: 2026-05-24
Contact: ccjiao30@gmail.com
Overview
YOYO Cycle Tracker is a no-account, local-first cycle tracking app. Period dates, symptoms, mood, pain, medicine notes, reminders, and freeform notes are stored on the user's device.
Data Stored On Device
The app stores the following information locally when the user enters it:
• Period start and end dates
• Flow, symptoms, mood, pain level, and notes
• Cycle profile settings
• Reminder settings
• Custom symptoms and preferences
• Export and backup files created by the user
Data Not Uploaded By YOYO Cycle Tracker
YOYO Cycle Tracker does not create accounts, does not provide cloud sync, does not upload cycle records, does not upload symptoms or mood records, does not upload pain or medicine notes, does not upload reminders or notes, and does not use cloud AI for health analysis.
Users may choose to export PDF, CSV, or encrypted local backup files. Those files are shared only when the user selects a destination through the Android operating system share sheet.
Advertising
The free version may show limited banner ads on non-sensitive surfaces. YOYO Cycle Tracker does not send cycle dates, symptoms, mood, pain, medicine notes, reminders, notes, exports, or backups to advertising SDKs.
The app uses Google Mobile Ads SDK and Google User Messaging Platform SDK. These Google SDKs may process data such as IP address, app interactions, diagnostic information, and device or advertising identifiers for advertising, analytics, and fraud prevention. Data handled by Google SDKs is governed by Google's applicable policies and user consent controls.
Purchases
Google Play Billing is used for Pro subscriptions and lifetime purchase. Purchase processing is handled by Google Play. The app uses purchase status only to unlock Pro, restore purchases, and remove ads for active Pro users.
Local Data Deletion
Users can delete local app data from the app's Settings screen or by using Android system app storage controls. Deleting local app data removes records stored by YOYO Cycle Tracker from the device. Exported files or backups that users saved outside the app must be deleted separately by the user.
Security
User-entered cycle records stay on the device unless the user exports or shares files. Encrypted local backups are password protected. Data transmitted by Google SDKs is handled using secure transport according to the SDK providers' documentation.
Medical Disclaimer
YOYO Cycle Tracker is for personal tracking and organization only. It does not provide medical diagnosis, pregnancy judgment, contraception advice, ovulation accuracy guarantees, medicine dosage advice, or medical advice. Please consult a qualified medical professional for health decisions.
Changes
This policy may be updated when app features or third-party SDK usage changes.