PromptPay + Wifi Calculator is an alternate version of Wifi Calculator ,which adding the ability to generate QR code that can use in PromptPay application's money transfer.
Wifi Calculator's features
It is a simple calculator app that use between local wi-fi users.
By connecting two device, one that start the chat room may work as a HOST and the others joining as a JOIN will got their own calculator and be able to share their calculated result between each other.