I have developed a BTCMarkets POC app using Flutter and Xamarin forms with similar UI and functionality.
The purpose of this POC to compare the following
- Easy of development and programming.
- Supported features (with and without any third party dependencies).
- UI theme and style.
- Testing.
- Packaging and deployments.
You can find Xamarin forms version at https://github.com/Rajbandi/BTCMarkets
You can find Flutter version at https://github.com/omkaars/BtcMarkets