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Calculator, unit converter and timer (stopwatch & countdown) in one app, built with Jetpack Compose

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bbor98/three-in-one-compose-mvvm

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Three In One

Platform API Kotlin Jetpack Compose License

Calculator, unit converter and timer (stopwatch & countdown) in one app, built with Jetpack Compose

✨ Features

  • Written in Kotlin
  • Built with Jetpack Compose
  • MVVM design pattern
  • Utilizing Exp4j library to evaluate mathematical expressions
  • Getting daily exchange rates via API
  • Implementing stopwatch and countdown timer functionality with Handler & Runnable

▶ Demos

Screenrecorder-2022-08-17-02-07-43-416.mp4
Screenrecorder-2022-08-17-02-09-45-378.mp4
Screenrecorder-2022-08-17-02-41-34-548.mp4

📚 Libraries

  • JetPack libraries
    • Compose Building native UI in a declarative way with Kotlin
    • ConstraintLayout Compose - Using ConstraintLayout in Jetpack Compose
    • Navigation Compose - Handling navigation between destinations within the app
    • ViewModel - Storing and managing UI-related data in a lifecycle-conscious way
    • Hilt - Injecting dependencies
    • DataStore - Persisting the key-value pairs or typed objects with protocol buffers
  • Kotlin Coroutines - Allowing asynchronous programming with Kotlin
  • Gson - Converting JSON to Kotlin data class
  • Exp4j - Evaluating mathematical expressions

📱 Try the App

Check out the Releases and download & install the APK file to try the app.

📜 License

Copyright (c) 2022 Bora Bor

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.