12Cal provides you all classical functions of the famous HP 12C Financial Calculator, but even more!
Specially optimized for iOS, 12Cal will give you the best experience!
It just easily fit your iTouch/iPhone well.
All classical functions of HP 12c:
★RPN Entry
★Financial Registers
★Simple and Compound Interest Calculations
★Amortization
★Discounted Cash Flow Analysis (NPV and IRR)
★Bond Calculation
★Depreciation Calculations
★Statistic analysis
★Programmable
★Optimized f and g functions
...
Pro Tuner 
DAW Remote HD 
String Tuner