Retro Beat

Abstract

1. Introduction

A music player app with the vibe of good old vinyl players.

In 2016, I published an article about how to code a design proposal.

I noticed that a lot of people had difficulty building motion designs.

2. Objective

A multiplatform music player app with the vibe of good old vinyl players, targeting Android and iOS

This project demonstrates how Kotlin, Android can be applied to a real-world Mobile App Development problem.

4. Technology Stack

• Compose Multiplatform: A declarative framework based on Jetpack Compose and developed by JetBrains and open-source contributors for sharing UIs across multiple platforms with Kotlin.
• Exoplayer: An extensible media player for Android.
• PreCompose: Supports navigation and view models providing similar APIs to Jetpack ones.
• Compottie: A port of Lottie Compose.
• Koin: A pragmatic lightweight dependency injection framework.
• Ktor Client: A library for fetching data from the internet and written in Kotlin from the ground up.

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Android Studio (latest)
• JDK 17
• Android device or emulator
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/andremion/RetroBeat.git
cd RetroBeat

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add push notifications with Firebase Cloud Messaging
• Add offline support with local caching
• Publish an internal test build on the Play Store

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which framework is used and why (native vs cross-platform)?
2. How is app state managed across screens?
3. Where is the data stored — locally, Firebase or a REST backend?
4. How are permissions (camera, location, storage) handled?
5. How would you publish this app to the Play Store / App Store?

9. Source Code & License

This project is developed by andremion and published on GitHub under the Apache License 2.0. Please follow the license terms and credit the original author when you use or modify this code.