GO-29 SciRPN closely simulates the venerable HP-29C Programmable Pocket Scientific Calculator. The HP-29C was released in 1977 and sold for a MSRP of $195. Virtually indistinguishable from the real item in operation, GO-29 is a powerful yet simple retro calculator.

GO-25 SciRPN simulates the venerable HP-25C Programmable Scientific Calculator. The HP-25C was released in 1976 and sold for a MSRP of $195. Virtually indistinguishable from the real item in operation, GO-25 is a powerful yet simple retro calculator.

•Requires iOS 8.0 or higher

•RPN

•Copy / Paste

•Shake to clear X

•Programmable with 198 program steps, conditionals, indirection, branching, 6-deep subroutines, full-speed, slow or single step operation

•Built-in library of sample programs

•iTunes File Sharing

•Program import via pasteboard or from other Apps

•Program export via printer, email, pasteboard or to others Apps

•Double-tap gesture that displays the stack and memory registers, and the program listing and documentation views

•For iPad two finger drag operations for displayed views

•Addition, subtraction, multiplication, division

•Trigonometric functions : sin, cos, tan, sin⁻¹, cos⁻¹, tan⁻¹, degrees, radians or grads

•Rectangular/polar coordinate conversion

•Hours (or degrees), minutes, seconds to decimal hours (or degrees) conversion, and vice-versa

•Logarithmic functions : log, 10**x, ln, e**x

•Summation Σ+, mean, standard deviation

•Other functions : y**x,1/x, √x, π, FRAC, INT, ABS, %

•Display : LED, 10 significant digits (8 + 2 digit exponent in scientific notation), 10-99 to 10+99

•Memory : 4 register stack, stack roll down, X-Y interchange, 30 memory registers with register math

•Optional thousands separator