No Support. Intrusive advertising

I paid them for the upgrade. It installed just fine on my iPhone, but not on my iPad--yet the app store claims the same app works on iPad and iPhone. I contacted the developers, but they ignored my question.

I wrote the above in 2014. The Company has recently (early 2016) changed their advertising from a small strip below the calculator, to a full-page pop-over that display while you are using the calculator. Possibly the most annoying ad I have ever had to endure.

This Company just gets worse!

DocTerryC about Calculator·, v2.01