Cross-Platform Music Streaming App

I’m planning to launch a simple yet solid music-streaming application that runs natively on both Android and iOS. The core focus is a clean audio player that fetches and streams tracks from my back-end, with social-media login (Google, Facebook, or Apple) as the only authentication option—no email/password flow needed.

I’m flexible on the tech stack: if you favour Flutter, React Native, Kotlin Multiplatform, or native Swift + Kotlin, that’s fine as long as the end result feels fast, modern, and stable on each platform. UI/UX assets, API endpoints, and sample tracks will be provided.

Deliverables
• Fully functioning Android and iOS apps compiled from a single codebase or two native projects
• Social-media sign-in wired up and returning a valid user token
• Streaming player that supports play, pause, skip, seek, and background playback
• Clean, documented source code pushed to my private Git repository
• A short TestFlight / internal-track build so I can verify every feature

Acceptance
I’ll consider the job complete when both apps install without issues, authenticate through one social account, stream the test catalogue in high quality, and pass a brief walkthrough on a mid-range Android device plus an iPhone.

If this sounds like a fit, let me know which framework you’d use, a ballpark timeline, and any previous audio-streaming work you can share.