I want to launch a lean, proof-of-concept ride-hailing application—think Rapido or Uber, but trimmed to the essentials—that works on both iOS and Android. The first build must include: • Real-time GPS tracking so riders can follow driver location and ETA. • An in-app payment gateway for seamless fare collection (UPI, cards, or any widely supported option). • A driver-and-passenger rating flow that appears once each trip ends. That’s the full feature set for now. If a lightweight admin panel is absolutely necessary to support these functions, let me know the simplest, most budget-friendly approach; otherwise, we can defer it to a later phase. Use any modern, cross-platform stack you can maintain confidently—Flutter, React Native, or a native pair (Kotlin + Swift) are all fine. Hand-over items I need: • Clean, well-commented source code in a version-controlled repo • Setup instructions that let me build and run the app locally • A short video or screenshots proving the three core features work end-to-end Propose a realistic timeline and milestones. If you’ve built similar mobility or on-demand apps, a quick link or demo will help me choose faster.