AtmoCast
Your library, anywhere. Seamless cloud streaming with native performance.
Player, main view
Play your cloud library.
AtmoCast was born from a simple frustration: the gap between desktop-class file management and mobile music consumption. Most cloud players fail to deliver seamless streaming from Googl Drive platform.
The app connects directly to Google Drive, parsing folder structures as playlists and albums. It utilizes the modern Android Media3 stack (ExoPlayer) for low-latency streaming and includes a robust synchronization engine that allows for selective offline downloading via Room DB.
The focus is on a “zero-buffer” experience, leveraging proactive caching and a custom data source for Google Drive that treats cloud files as if they were local.
Timeline
Q1 · 2026
Scope
Mobile UX Design
Android Development
Cloud Sync Engine
Scale
Personal library
100% Offline support
A reactive media stack built for modern Android.
Engineering for performance in the cloud.
Availability of native APIs and libraries helped to solve the paramount goals - smooth playback and seamless integration with Android OS and Android Auo.
Media3 stack provides a unified API for both the UI and the background playback service, ensuring that audio never stops, even when the system is under heavy memory pressure.
Every cloud file is mirrored in a local Room database. This allows for instant metadata searches and playlist management without needing a network connection to browse your library.
Instead of relying on standard HTTP URLs, a custom DataSource for ExoPlayer is used. This handles OAuth2 token refreshing and byte-range requests directly from Google Drive, significantly reducing start-up time.
The entire UI is built with Jetpack Compose. This allowed for a highly dynamic interface where the player state and library browsing are perfectly synced across all screens.
The goal was to make the cloud feel as fast as a local SD card.
Native performance, delivered.
AtmoCast successfully replaced several fragmented streaming apps. The technical bet on native stack provided a highly responsive UI that remains fluid even during massive library synchronizations.
The project highlights the power of native Android development when combined with modern cloud APIs, creating a tool that is both highly personal and technically robust.
Impact
Zero-latency streaming
Unified cloud library
Cost
12 weeks · Solo build
Next
Multiple cloud providers
FLAC support
Player with dark theme
Standard widget in notifications
List of files in a folder
Menu
Landscape view