Sagar5426/Expense-Tracker ? reverse-engineered prompt

Build me an iPhone expense tracker app that feels clean, modern, and easy to use.

I want users to be able to add, edit, and delete expenses, then quickly search through them later. The app should also show a monthly spending overview with simple graphs so it is easy to see where the money is going. Please make it feel secure too, with an option for passcode protection and Face ID on supported devices. Dark mode should look great as well.

Keep the experience smooth and straightforward, with a polished SwiftUI style and local data storage so everything stays fast and private. If you need to look up any current Apple docs or best practices while building it, go ahead.