FLUTTER APPLICATION COMMUNICATING WITH HM10

I need a flutter application that communicates with the hm10 ble module. Which button will send which command, my document is ready. It needs to be able to send and read data in hex format. I have device running under hm10. It reads the commands from hm10. My reference application is below. It's not a very complex application. I just want it to look a little more modern.


https://play.google.com/store/apps/details?id=com.ovnisoft.ecopool.cudell&hl=tr&gl=US