RPN-38 CX vs WP 34s Usage & Stats
RPN-38 CX is the first photo-realistic simulation of Hewlett-Packard's popular high-end programmable business calculator HP-38C for the iPhone. Produced from 1979 through 1983, it was the "Chive" member of the third-generation HP calculators known as the "Spice" series.
While the simulator works like the original calculator, a number of carefully designed extensions make it a lot easier to use.
RPN-38 CX is fully compatible with the HP-12C, except for calculations and programs involving Bonds and Depreciation.
Features:
• Photo-realistic look-and-feel
• Programmable (99 steps, program memory not shared with register memory)
• Subroutines, flags, loop control, extended conditional branching
• Insert and delete steps with automatic address correction
• 20 registers, "continuous", with unlimited store/recall arithmetic
• Indirect register addressing
• Register view
• Program listing view
• Program library view
• Additional functions (nominal and effective interest rate)
• Shortcuts for often-used key combinations
• Store and retrieve any number of programs
• Sharing: e-mail, AirDrop, Dropbox, copy, paste, print
• 40 programs pre-installed
Calculator functions:
• Percentage (%, ∆%, %Total)
• Simple and Compound Interest
• Optional odd periods (like HP-12)
• Nominal/Effective interest rate conversion
• Amortization
• Discounted Cash Flow Analysis
• Net Present Value, Internal Rate of Return
• Date and Calendar (actual or 30/360 day basis)
• Statistics (mean, weighted mean, standard deviation)
• Linear Regression
• Additional functions not found on the HP-38:
- Subroutines, flags, loop control, random number, Pi, Log, x² and more
Details: cuveesoft.ch/rpn38
- Apple App Store
- Paid
- Productivity
Store Rank
- -
WP 34s is the most powerful and complete implementation of a classic RPN scientific calculator. Now available on iOS too (see the support site for other emulators and for the real stuff).
The function set of the WP 34S is based on the most powerful programmable RPN calculators built so far and we expanded the set, incorporating programmer functions (base 2, 8 & 16), a fraction mode, probability distributions, a stopwatch...
We also included numerous additional useful functions for mathematics, statistics, physics, engineering, programming, I/O, etc., such as:
+ Euler’s Beta and Riemann’s Zeta functions, Bernoulli and Fibonacci numbers, Lambert’s W, the error function, and the Chebyshev, Hermite, Laguerre, and Legendre orthogonal polynomials (no more need to carry heavy printed tables),
+ many statistical distributions and their inverses: Poisson, Binomial, Geometric, Cauchy-Lorentz, Exponential, Logistic, Weibull, Lognormal, and Gaussian,
+ programmable sums and products, first and second derivatives, solving quadratic equations for real and complex roots,
+ testing for primality,
+ integer computing in fifteen bases from binary to hexadecimal,
+ extended date and time operations and a stopwatch3 based on a real-time clock,
+ financial operations such as mean rate of return and margin calculations,
+ 88 conversions, mainly from old Imperial to universal SI units and vice versa,
+ 50 fundamental physical constants as accurate as used today by national standards institutes such as NIST or PTB, plus a selection of important constants from mathematics, astronomy, and surveying,
+ Greek and extended Latin letters covering the languages of almost half of the world’s population (upper and lower case in two font sizes), plus mathematical symbols.
A beginner manual can be downloaded at http://sourceforge.net/projects/wp34s/files/doc/WP_34S_Beg_Guide.pdf and a full, very complete version at http://sourceforge.net/projects/wp34s/files/doc/Manual_wp_34s_3_1.pdf
- Apple App Store
- Free
- Productivity
Store Rank
- -
RPN-38 CX VS. 
WP 34sJanuary 3, 2025