Update needed

I purchased this app for a college class that Im taking. I was excited when I found the app and I didnt needs to purchase the calculator, as I didnt need another item to lug around. It worked great when I installed it; however, since the multiple IOS updates it is not functioning properly. The keys are very small and the readout screen is very hard to read. I havent had any troubles on my iPhone, but this is getting ridiculous! I would gladly give this app a 5 star rating when it is returned to its original means of functioning, until then it gets 1 star. Get on the ball, Texas Instruments!!

wavby about BA II Plus™ Financial Calc, v1.2