rysasahrialChronos is an intuitive, modern alarm clock Android app built entirely in Kotlin, emphasizing simplicity, usability, and Material Design UI. As an open‑source Android alarm clock source code, it’s designed to be easy to read, maintain, and extend, making it an excellent resource for developers learning Kotlin app development, Jetpack Compose, or alarm manager usage.
Perfect for both beginners and experienced developers, Chronos offers essential alarm clock features—setting alarms, snoozing, dismissing—with a clean and user‑friendly interface. The code demonstrates effective integration of Android’s AlarmManager, Notification channels, and lifecycle‑aware components. It shares key patterns in MVVM architecture, and respects material design guidelines, ensuring the UI looks polished on any Android device.
Developers searching for “Android alarm clock sample”, “Kotlin alarm app tutorial”, or “open source alarm clock code” will find Chronos especially relevant. The GitHub repository includes a well‑structured folder layout, complete build scripts using Gradle Kotlin DSL, and resource files for themes, icons, and layouts—providing a practical starting point for building customized alarm or reminder apps. Since Chronos is forked from Alarmio, it inherited a robust feature set while streamlining its source for clarity and ease of modification.
The source code features thorough comments and modular components, enabling easy extension—for example, adding recurring alarms, theming, or custom notifications. It also supports backup/restore of alarm configurations and configurable snooze behavior. As the code is licensed under Apache‑2.0, developers are free to use it in personal or commercial apps, subject to license terms.
With 85+ stars and active community support, Chronos continues to evolve, and is frequently updated to support Material 3 theming, dark/AOD mode, and accessibility improvements. Its design makes it an excellent reference for Android developers integrating alarm services, data persistence (Room/SharedPreferences), and notification handling. Whether you’re building a personal project or a production‑grade app, Chronos delivers a solid alarm clock foundation in Kotlin.
- Author: meenbeese (forked from fennifith/Alarmio)
- Programming Language: Kotlin (Android)
- License: Apache‑2.0
- Usage Limits: You may use, modify, distribute, or include in a commercial product provided you comply with the Apache‑2.0 terms (notice, attribution, no warranty).
- Repository Link: https://github.com/meenbeese/Chronos