Cross-Platform Social Networking App

I’m ready to turn a straightforward idea into a polished social networking app that runs smoothly on both Android and iOS. The core experience revolves around letting users create rich profiles and exchange messages in real time. Sign-up and log-in will be done exclusively through phone-number verification, so I need that flow to be seamless and secure from the start.

I’m open on the tech stack—Flutter, React Native, Kotlin/Swift, or another modern solution—as long as a single code-base (or nearly so) keeps future maintenance efficient.

Deliverables I expect:
• Functional Android and iOS builds published to their respective stores
• Profile creation and editing screens tied to a scalable backend
• End-to-end messaging (text, images, push notifications)
• Robust phone-number OTP verification, including fallback handling
• Clean, well-commented source code and a brief handover guide

A simple activity feed isn’t in scope yet, but I’d like the architecture kept flexible so that feature can be added later without major refactoring.

If you’ve shipped similar real-time social apps and can demonstrate a secure authentication flow, let’s talk timelines and milestones.