Crashes and ads! Ugh!

This app is terrible! Even paid $1.99 for upgrade, thinking it might be better. Ads still pop up in the middle of trying to calculate, and after Xing out of the ad, you have to put curser back where you were before to bring calculator back up. Terrible!
And then theres the crashes, which it does repeatably!
I want my money back! Highly advise against this app!

Roughneck67 about Builder Calculator Home Calc, v1.1