Very disappointed – Calculator HD++ Review

I was looking for a calculator for my IPad 3 that would work with my external Bluetooth keyboard. The app's description mentions compatibility with Bluetooth keyboards. NOT WITH MINE. I tried contacting the developer via email (recommended by him). Unless I missed something, I could not email him since he doesn't provide an email address--only a web site address. When I opened it I didn't see an email address
Review by wjb0730 on Calculator HD++.