Dual Platform Services App

I need a mobile application that runs natively on both iOS and Android. Its main goal is to let customers browse, book, and pay for several different services I provide—all in one streamlined marketplace rather than a single-product store.

Core screens and functions I already foresee:
• A Home/Explore screen with service categories and search
• Service detail pages featuring imagery, descriptions, pricing, and a clear “book/buy” call-to-action
• A secure checkout that supports major cards and mobile wallets
• A personal account area where users can see orders, manage addresses, and reach chat support
• A simple admin dashboard (web-based is fine) so I can add or edit services, change prices, and track orders in real time
• Push notifications for order status updates and promotions

I’m open to the toolchain that suits you best—Flutter, React Native, native Swift + Kotlin, or another modern option—as long as the final builds meet App Store and Google Play requirements.

Deliverables
1. Well-commented source code
2. Testable iOS and Android builds
3. Guidance through first-time submission on both stores
4. A concise handover document describing build steps and environment setup

Acceptance criteria
• Smooth performance on mid-range devices running the latest two OS versions
• End-to-end test transactions complete without error in the payment flow
• Zero critical crashes in a 50-user beta test

Please include an estimated timeline along with examples of similar apps you have launched.