Playoff-Style Song Ranking App

I’m looking to build a mobile app for both iOS and Android that lets users create a definitive, personal ranking of an artist’s entire catalogue through a head-to-head “playoff” system. Each day the app automatically serves one new track from the chosen catalogue; as matches progress, the user places that song within their previously ranked song list.

What I need from you
• A clean, intuitive cross-platform code-base (React Native, Flutter or similar) that keeps feature parity between iOS and Android.
• The core playoff algorithm: bracket generation, daily match scheduling, tiebreak logic and final ranking output into personal raking list.
• Simple artist-catalogue import: the user selects an artist once, the app stores that catalogue locally and pulls one song per day—no manual search or uploads required.
• Local storage and lightweight cloud sync so rankings persist across devices.
• Push notifications that remind users when a new matchup is ready.
• A share sheet so they can post their final list (text or image) to social media.
• Potential to integrate with a music playing platform to play the songs whilst the ranking takes place.

If you have prior experience with music-related apps, bracket logic or cross-platform frameworks, that will speed us up, but any proven mobile track record works. Let’s build something fun and community building!