Calculator RPN

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This is the best RPN calculator app I’ve ever used. The layout is clean, intuitive, and the buttons are clear and concise. The calculation steps/history immediately tells me if I’ve accidentally fat finger any keys while the “always on” feature (the phone stays on while the app is up) is a brilliant touch. This avoids the constant nuisance of logging into my phone every two minutes while I’m doing calculations. I use this handy piece of software nearly every day for work and home and it’s simply fantastic. My only wish is that it did unit conversions but it’s such a small gripe that it really should be a footnote because the rest of the app is that great. If you know how to use RPN, you won’t regret getting this calculator.

Don't care about past evaluations, now he is perfect. A perfect calculator.