I need a straightforward but reliable utility app built once and delivered for both iOS and Android. The single most important feature is tool integration: the app should connect cleanly with a small set of existing productivity tools (think calendars, notes, cloud drives) so users can trigger them from one place without juggling multiple screens. You’re free to choose the most efficient stack—native with Swift and Kotlin or a shared codebase in Flutter or React Native—so long as the result feels fully native on each platform and follows current App Store and Google Play guidelines. I will supply UX wireframes and the list of target tools plus their public APIs; you’ll handle development, basic UI polish, and the hand-off to TestFlight and internal testing tracks on Google Play. Deliverables are a compiled build for each platform, the complete, well-commented source code, and brief setup documentation so my in-house admin can manage future updates.