Privacy Policy
Welcome to ChronoHub. We believe that privacy is a fundamental right, especially when using everyday utilities like clocks, alarms, and timers. This Privacy Policy outlines our commitment to transparency, data minimization, and user trust. In brief: we do not collect, sell, or transmit your personal information.
1. Zero Data Collection Architecture
All timing utilities on this website—including the Analog Clock, Digital Clock, World Clock, Flip Clock, Alarm Clock, Countdown Timer, Pomodoro Timer, Egg Timer, Stopwatch, and Time Zone Converter—operate entirely inside your web browser. When you start a stopwatch, set a morning alarm, or calculate egg boiling parameters, every calculation and state change occurs locally on your own computer or mobile phone. No timing logs, user actions, or device telemetry are uploaded to our servers.
2. Client-Side Local Storage
To ensure your settings persist between browser sessions without requiring an account or login, we use your browser's built-in localStorage feature. This technology saves small key-value strings directly onto your device:
- Alarm Schedules: Saved alarm times, repeat rules, chosen audio tones, and math puzzle toggles.
- Sound & Volume Settings: Whether you have toggled mute on or off, and your chosen master audio volume level.
- Theme Preference: Your chosen dark mode or light mode appearance.
- Egg Timer & Pomodoro Defaults: Custom work session lengths, break durations, and preferred egg boiling presets.
- World Clock Favorites: Custom selected cities and time zone offsets added to your monitoring grid.
This information never leaves your personal browser. It is not synchronized with any cloud database, remote API, or external third-party server.
3. No Cookies and No Cross-Site Trackers
We do not utilize tracking cookies, advertising identifiers, pixel tags, or third-party behavioral profiling scripts. When you browse ChronoHub, your activity is not monitored, profiled, or packaged for advertising networks. We do not integrate social media tracking pixels or external behavioral analytics suites.
4. Audio Processing and Browser Permissions
Our sound system plays alarm tones, metronome ticks, and hourly chimes using self-hosted audio files and the browser's native Web Audio API. When you click preview or an alarm rings, audio decodes locally on your device. Furthermore, if you optionally grant permission for desktop notifications (used for alarm ringing and timer completion alerts), your browser handles these notifications strictly at the operating system level.
5. Full User Control and Data Erasure
Because all custom preferences and saved alarms reside exclusively in your browser's local storage, you have total control over them. You can delete individual alarms using the trash icon inside the Alarm Clock view at any time. Alternatively, clearing your browser's site data, cache, or cookies for this domain will instantaneously remove all saved configurations and restore the application to its default state.
6. Security and Policy Revisions
We implement modern web security headers, secure transport practices, and clean source code with zero external dependencies to ensure a safe browsing environment. If we ever make technical updates to our platform that affect how local configurations are preserved, we will update the text of this Privacy Policy with an updated revision date.