I want a straightforward attendance application built for both iOS and Android. The only check-in method I need is a simple manual in / out button—no QR codes or GPS at this stage. End-users will be Students/Employees, so the interface should be clean, intuitive, and quick to operate from a phone or tablet. Key goals: • Record the exact date-and-time stamp when a user taps “Check-In” and “Check-Out”. • Store each record securely in a cloud database that I can later export to CSV or Excel. • Allow me to filter and view logs by user and by date range inside a small admin screen or web panel. Feel free to propose your preferred stack—Flutter, React Native, Swift / Kotlin natives are all fine with me as long as the final build passes App Store and Google Play review. Source code, build instructions, and a brief user guide will be the required deliverables. If you have already shipped a similar solution, let me see it; otherwise, outline how you will structure the data, handle offline caching, and secure the API before we start.