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I have an iPad 3rd gen (retina display), 64GB, 4G & wifi. The app is RPN-45 HD. Thanks for providing the email address.
Or go for the gusto with the power user version PCalc RPN Calculator. This is the same result (and price) as buying the bundled...
I love Reverse Polish Notation. Have used it for years during my career. A very intuitive method.
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This is about the app here....the developer has now posted on the app not to do the update as there have been reports of a problem.
It is in the...