I am flutter developer and can develop  android and IOS application with the business idea you have. I am well experienced in this field I have worked with many companies as well.

My work includes :

1.Food delivery app :- =>beautiful UI and nice look and feel

  => separate user and service provider app

  => admin can control user and service provide

  => user can easily locate their nearby restaurent to order food

  => location enabled

2.grocery app :- => two app one for user and another for delivery guy

  => user can easily locate nearby store

  => delivery guy can navigate through integrated map

  => nice look and feel

  => easily maintainable

  => light and dark theme

  => multi-lingual support

3.Hospital management app :- => user can search doctor acc. to their name and designation

 => can see availability of doctor and can fix appointment

 => can have personal consultation with doctor

4.Leaning management system :- => live classes

  => students can chat with tutor

  => attendance system 

  => notes uploading

  => project submission