Best general-purpose RPN Absolutely the best of all Android free AND paid RPNs. Clear and elegant, making use of screen swipe rather than imitating old calculators of the 80s. Could be even better with stack display option.

Stretch to larger screen The best free RPN! can you please allow the app to stretch to size of bigger screen, currently calculator covers 80% of screen.

Very good. Clean and functional UI. Doesn't try to look like a 30+ year old HP. Would appreciate an unlimited stack, however.

RPN calculator Excellent for free.

Super clean UI This is exactly what I wanted: a no fuss rpn calc that looks nice. Thanks!

Thank you, clean interface no clutter. It's all you need.

It would be perfect if it installed on SD Card instead of stealing valuable memory.

Excellent job with this calculator. I use it almost daily & never had an issue our problem. Fantastic array of functions.

Would like to see more of the stack on the screen.

So far my favorite RPM calculator

Best general-purpose RPN Absolutely the best of all Android free AND paid RPNs. Clear and elegant, making use of screen swipe rather than imitating old calculators of the 80s. Could be even better with stack display option.

Stretch to larger screen The best free RPN! can you please allow the app to stretch to size of bigger screen, currently calculator covers 80% of screen.

Very good. Clean and functional UI. Doesn't try to look like a 30+ year old HP. Would appreciate an unlimited stack, however.

RPN calculator Excellent for free.

Super clean UI This is exactly what I wanted: a no fuss rpn calc that looks nice. Thanks!

Thank you, clean interface no clutter. It's all you need.

It would be perfect if it installed on SD Card instead of stealing valuable memory.

Excellent job with this calculator. I use it almost daily & never had an issue our problem. Fantastic array of functions.

Would like to see more of the stack on the screen.

So far my favorite RPM calculator