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Spotify OAuth and playback
Users connect Spotify through OAuth and continue into a playback-driven experience with Now Playing, Library, Playlists, and Search flows.
Tempo-aware running companion
Run in sync with your music
Stempo connects motion, rhythm, and listening into one clean mobile experience. Track your daily steps, match playlists to your pace, and turn every session into a smoother, more motivating run.
Spotify
Playback-driven experience
Health
Motion and steps tracking
1 flow
Music, movement, feedback
Core product features
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Step and motion tracking
Stempo combines listening data with step and motion input so the interface can react to pace, session flow, and movement goals.
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Onboarding and setup flow
The product includes onboarding for Spotify connection and movement setup, making first launch easier and demo-ready.
Demo recording
Tech stack and architecture
The project has a concrete engineering stack, including a Flutter app, FastAPI backend, MySQL database, and Spotify/motion integrations.
Frontend technologies
Flutter / Dart
Main cross-platform app layer for Android, iOS, Web, and Desktop.
FastAPI
Backend API layer for authentication, app logic, integrations, and per song bpm features.
MySQL
Database layer for storing song data after first play.
go_router
Navigation across onboarding, home, now playing, playlists, and more.
Auth + motion packages
OAuth callback flow and fitness/step data integration.
Project structure
app - App-level setup, routing, and root configuration.
controllers - Logic controllers that connect UI actions with services and app state.
pages - Main screens such as onboarding, home, playlists, now playing, and other app views.
services - Spotify integration, authentication logic, step tracking, API calls, and external data handling.
state - Shared app state, providers, and state-management related files.
ui - Reusable components, styling, theme files, and visual building blocks.
platform folders - Android, iOS, Web, Windows, Linux, and macOS build targets generated by Flutter.
Want to get notified when we launch?
Drop your email and we’ll let you know as soon as Stempo is live. No spam, just the release.