Privacy Policy

Last updated: June 7, 2026

Introduction

Welcome to 28 ("we," "our," or "us"). We are committed to protecting your privacy and personal information. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and related services.

Information We Collect

Personal Information

  • Email address (for account creation and authentication)
  • Health and wellness data (menstrual cycle information, symptoms, moods)
  • Usage data and app interactions

Automatically Collected Information

  • Device information (device type, operating system, app version)
  • Usage analytics and performance data
  • Crash reports and error logs

How We Use Your Information

  • To provide and maintain our app services
  • To personalize your experience and provide predictions
  • To process subscription payments and manage your account
  • To send important notifications about your account or the service
  • To improve our app functionality and user experience
  • To comply with legal obligations and protect our rights

Data Storage and Security

Your health data is stored locally on your device and synced securely to our servers when you're signed in. We implement industry-standard security measures including:

  • Encryption of data in transit and at rest
  • Secure authentication protocols
  • Regular security audits and updates
  • Limited access to personal data by authorized personnel only

Data Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties. We may share your information only in the following circumstances:

  • With your explicit consent
  • To comply with legal obligations or court orders
  • To protect our rights, property, or safety, or that of our users
  • With service providers who assist us in operating our app (under strict confidentiality agreements)
  • In connection with a business transfer or acquisition

Your Rights and Choices

You have the right to:

  • Access and review your personal information
  • Correct or update your personal information
  • Delete your account and personal information
  • Export your data
  • Opt out of promotional communications
  • Withdraw consent where processing is based on consent

Age Requirements

Our app is intended for users 17 years of age and older. We do not knowingly collect personal information from users under 17. If we learn that we have collected personal information from a user under 17, we will delete that information promptly. By using our app, you confirm that you are at least 17 years old.

International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure that such transfers comply with applicable data protection laws and that your information receives adequate protection.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by posting the new Privacy Policy in the app and updating the "Last updated" date. Your continued use of the app after changes become effective constitutes acceptance of the updated policy.

Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us at:

Email: contact@28cycle.app

We will respond to your inquiry within a reasonable timeframe.