RPN Scientific Calculator for Nokia Series 60 is an RPN Mode calculator for the Nokia 7650 and 3650. The program can be purchased for $5 via Handango.

Features:
Numbers: 19 digits of precission (15 digits in screen).
Basic functions: + - x / ± 1/x %.
Presentation number modes: standard, fixed, scientific and money.
Real numbers functions: square and square root, power and root, logarithm and antilogarithm, exponential and natural logarithm. Trigonometric functions: sine, cosine and tangent and its inverses. Modes degrees and radians.
Hyperbolic functions: sine, cosine, tangent and its inverses.
Stack functions: dup, dup2, drop, dropn, over, swap, rot, roll, rolld.
Other features: the stack can grow only limited by the memory of the phone. Ten aditional memories for easy access.
Constants: pi, 1/pi, number e, 1/e, Infinite.