Privacy Policy

Last Updated: January 17, 2026

Epoch Labs LLP ("we," "us," or "our") operates the website www.epochlabs.dev and develops mobile applications, including "Mumu-Check"—an automated safety check-in application. This Privacy Policy explains our practices regarding the collection, use, and disclosure of information.

1. Information Collection and Use

We believe in "privacy by design." Mumu-Check was designed to keep your personal safety data under your control.

  • No Personal Data Collected by Us: Epoch Labs LLP does not collect, store, or view your check-in status, emergency contacts, or messages.
  • No Account Required: You do not need to create an account with us to use "Mumu-Check".
  • Local Storage: Your check-in schedule, emergency contact list, and draft messages are stored locally on your device.

2. App Functionality & Data Transmission

The core function of the App is to notify your emergency contacts if you fail to check in.

  • Text Messages (SMS): SMS notifications are sent directly from your device using your carrier. This data is handled locally by your phone's messaging app.
  • Email Notifications (EmailJS): To send email notifications, the App uses a third-party service called EmailJS. When an alert is triggered, the App transmits the following specific information to EmailJS servers for delivery:
    • Your Name (as entered in Settings)
    • Your Emergency Contact's Name
    • Your Emergency Contact's Email Address
  • Ephemeral Processing: This data is transiently processed by EmailJS solely for the purpose of delivering the notification email. We do not use this data for any marketing or analytics.

3. Monetization & Third-Party Services

To support our development, we use the following third-party services:

  • EmailJS: Used for reliable delivery of emergency email notifications. Please refer to EmailJS's Privacy Policy for more details on how they handle data transmission.
  • Advertisements: This application does not contain nor display any advertisements.

4. Data Safety Compliance

In accordance with Google Play's Data Safety requirements:

  • We do not "sell" user data.
  • Your data is encrypted in transit via HTTPS when communicating with EmailJS.
  • Since we do not maintain user accounts or central databases, there is no user data on our servers to delete.

5. Contact Us

For any questions regarding this policy or our Apps, please contact:

Epoch Labs LLP Website: www.epochlabs.dev

Email: contact@epochlabs.dev