Junk! – HP 12C Platinum Calculator Review

I’ve used an HP 12C for 20 years to calculate amortization payments for loans. This app either shuts off completely or gives an error 5, 9 out of 10 tries of entering the data and hitting the pmt key. How can the calculator be so great and the app be such junk?!
Review by Steven Gerro on HP 12C Platinum Calculator.