RPN vs Apini

RPN-34 CE is the first photo-realistic simulation of Hewlett-Packard's popular mid-range scientific calculator HP-34C for the iPhone. Produced from 1979 through 1983, it was the "Basil" member of the third-generation HP calculators known as the "Spice" series. It was the first pocket-calculator ever capable of doing integration and root finding. While the simulator works like the original calculator, a number of carefully designed extensions, along with the tremendously improved speed, make it joy to use even today. RPN-34 CE comes with the programs of HP's "Applications", "Mathematics", "Surveying", "Student Engineering", and "Statistics" application books built-in! Handbooks may be downloaded from CuVee Software's website. Features: • Photo-realistic look-and-feel • Programmable (999 steps), subroutines, 12 labels, 10 flags • 100 registers, "continuous", with full store/recall arithmetic • "Live" register view • Program listing view with intelligent navigation • Program library, easily backed-up via iTunes • Store and retrieve any number of programs • Sharing: e-mail, AirDrop, Dropbox, copy, paste, print • 62 programs pre-installed (53 original HP) Calculator functions: • Integration, root solving • Statistics (mean, standard deviation, linear regression, normal distribution) • Factorial of any number (normal and logarithmic) • Trigonometric and hyperbolic functions (degrees, radians, grads) • Polar/rectangular conversions • Inverse, square root, logarithm, exponential, pi • Storage arithmetic (both store and recall) • Statistics (average, standard deviation, y-estimate, linear regression) • Unit and hours conversions • 31 additional functions not found on the HP-34C, like time and sound Details: cuveesoft.ch/rpn34

Apini ends on 30 September 2026 Apini is being discontinued. 30 September 2026 is the last day the app and its cloud services can be used. After that the servers are switched off. The app stops working, and anything still in Apini can no longer be retrieved. If you use Apini, please export what you want to keep before then. Open your Honeycomb, open the three-dots menu and choose “Export Excel”, or open apini.cloud in a browser and copy your items over to other systems. If you have a lot of Honeycombs, write to info@apinilabs.com and we’ll prepare a bulk export for you while the system is still running. The free and open building blocks Apini was built on stay free and open. We’re working on giving them a lasting home, independent of any single company - more on that soon. Today you can find them at labfreed.org.