BeatSync (WWDC25)

October 23, 2025 ยท View on GitHub

BeatSync Logo

Swift Student Challenge Winner 2025

BeatSync is an award-winning project recognized in the Swift Student Challenge 2025 by Apple. This app synchronizes music with the user's heart rate, creating a fully personalized sound experience.

Built with SwiftUI and AVFoundation, it allows users to adjust and modify music tracks based on their BPM in real-time.

Features

  • BPM Synchronization: Automatically adjusts music tracks based on your heart rate.
  • Track Selection: Choose from drums, synths, and bass to create your sound.
  • Audio Effects: Add reverb and ambient sounds like ocean waves and rain.
  • Modern UI: Animated design with a Launchpad-style button layout.
  • Apple Watch Integration: Real-time BPM tracking using HealthKit.
    • Note: Due to Playground limitations, the Apple Watch integration is simulated for testing purposes.

Technologies Used

  • SwiftUI: For declarative UI development.
  • AVFoundation: For core audio processing and playback.
  • AudioToolbox: For additional audio functionality.
  • SceneKit: For 3D music immersion elements.

How to Run the Project

  1. Clone the repository to your local machine: 
    git clone [https://github.com/PauloBrand7/BeatSync-WWDC25.git](https://github.com/PauloBrand7/BeatSync-WWDC25.git)
  2. Open the project in Xcode.
  3. Ensure the app target is set to Swift Playgrounds or an iPad/Mac simulator.
  4. Run the project to experience the real-time BPM-based music synchronization.

Screenshots

Start Screen

Start Screen 		Heart Rate Sync

Heart Rate Screen 		Launchpad

Launchpad Screen 		Audio Player

Player Screen

License

This project is licensed under the MIT License. See the LICENSE file for details.