Misleading Description Pro: It has a clean interface and layout with nice, big easy buttons. Cons: I was looking for an RPN based calculator. The description says it has an RPN mode. There is no RPN mode to be found. The developer appears to have overstated (lied) about what his app can do. The following things are completely missing from this app: Traditional algebraic or RPN operation * Result history * Unit conversions * Physical constants table * Percentages * 10 memories * Binary, octal, and hexadecimal (can be enabled in Settings) * Trig functions in degrees, radians or grads * Scientific, engineering and fixed-point display modes * Configurable digit grouping and decimal point * Full built-in help
Calculator Tag Plz remove calculator in app to look like Original Jelly Bean
No RPN mode!!
No Not cool
Useful I m loving it
 On place of the "-" Appears 
Simple calculator with complete history (virtual tape, a.k.a. ticker tape style)