I need a straightforward mobile application that lets my sales team price windows on-site and save every quote for later follow-up. The app must run smoothly on both iOS and Android, so a single code-base approach such as Flutter or React Native makes sense, but I’m open to your preferred framework as long as it delivers reliable cross-platform builds. Core functionality I must see in the first release: • Input window dimensions (height and width) and instantly calculate area in m² • Apply a changeable “price per m²” rate and show the total cost • Save each quote with customer details and recall it from a searchable list • Simple user log-in plus an admin area where I can update pricing, view all quotes, and export data Acceptance criteria – APK and iOS TestFlight builds that mirror each other in features and UI – Clean, well-commented source code delivered through Git (one branch per milestone) – All listed features working without crashes on current versions of iOS and Android – Brief hand-off document covering build steps and how to change the price rate I’ve capped the project budget at about $300, so please scope your milestones accordingly and focus on an MVP that can later be extended. If you have existing samples of similar quote/estimator apps, share them; it will speed up selection.