Touch RPN (formerly known as Touch Fin) is a financial and scientific calculator for iPhone. It implements most features of the industry-standard HP-12C calculator, including programming functions.
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The calculator mimics the real device as closely as practically possible, including details such as rounding up of n in financial calculations. It shares the same limitations of a real 12C: only 99 programming steps, 20 memory positions, etc.
To open the new Settings pane, press the ON button, then "Settings" at the right top corner, to access the preferences panel.
More about Settings
Clipboard, quick guide and layout
Calculator flavors
Using a hardware keyboard
Saving and sharing the memory
Color editor
Problems with your purchase?
Privacy policy and terms of use
If you have any issues or want to send some feedback, visit the Facebook users group, our Instagram profile, or contact us by e-mail.