Cross-Platform Task Manager App

I’m looking for someone who can build a straightforward productivity app that runs smoothly on both iOS and Android. The first release will focus solely on task management: users need to be able to add, edit, prioritise, complete and delete tasks in a clean, intuitive interface.

A lightweight tech stack such as Flutter or React Native is fine, but I’m open to native Swift/Kotlin if you feel that will shorten development time without sacrificing quality. Whichever route you choose, the code should be well-commented and easy for another developer to pick up later.

Deliverables
• Fully-functional iOS and Android apps compiled from a single codebase
• All source files in a version-controlled repository
• Simple but polished UI/UX aligned with current platform guidelines
• Installation/build instructions and store-ready release builds

Acceptance criteria
1. A new task can be added with title, optional description and due date
2. Existing tasks can be edited or deleted
3. Completed tasks move to a separate “done” list and can be restored
4. Local data persists after app restart
5. App passes review on both App Store and Google Play using test accounts I provide

Once this core scope is solid, I may extend the project to include calendar integration or note-taking, so structuring the code for easy feature expansion will be appreciated.