I want to launch a single mobile app that lets drivers handle every routine task around their vehicle without ever leaving their phone. The build has to be truly cross-platform—one code-base deployed to both iOS and Android—so users on either store get the exact same experience. Core modules I need right now are: • Check car details pulled live from the Vahan API • Pay traffic challans seamlessly inside the app • Recharge FASTag in just a few taps • Full buy-and-sell marketplace for used cars For the Vahan integration you’ll work with the official APIs to fetch RC details securely. Challan and FASTag flows will require payment-gateway integration (UPI & cards) and receipts stored in the user’s history. The marketplace should let anyone post, search, filter, and contact sellers, with images and basic chat or call options. A clean onboarding flow, OTP-based login, push notifications, and a lightweight admin console for user/transaction management are all part of the scope. I’m open to Flutter, React Native or any modern cross-platform stack as long as performance feels native. Because on-ground coordination is essential, I’m only considering developers or small teams based in DELHI-NCR. If you have prior work with government APIs, payment gateways, or automotive marketplaces, that will stand out. Let’s talk through your proposed tech stack, timeline, and milestones so we can get this on the stores quickly.