An absolutely outstanding replica of the best STEM calc ever! You won't find an original HP App for this model, since HP knows they simply can't compete with the impressive work done by Thomas. Please, download, enjoy, and donate to keep this project's updates going on! :0)
I have been an HP-4x fan since I was an engineering student in the early 80's. Free42 is an excellent and true emulator that I use on a daily basis. Sadly, my real one sits at home most of the time, now. Great job you guys!
Since my HP15C died, I have relied on Free42 on all my computing devices. A worthy replacement.
Excellent reimplementation of what was/is a stand out calculator. I personally liked the 32S but alas its LCD failed, and this is a perfect replacement.
Its a great app that is always with you when you want to do some quick calcs. I pass it on to as many people as I can. Still have my old HP42 somewhere, but this is better.
I am a professional Surveyor and this is my go to calculator
Implemented special-case code for pure real and pure imaginary numbers in all the complex logarithmic, trigonometric, and hyperbolic functions.
Fixed a few edge cases in complex functions.
On cold start, now clearing flags 21 (printer enable) and 55 (printer existence), to match the behavior of the real HP-42S.
Removed "raw text" print option; it has been obsolete since the introduction of UTF-8 printing in 1.5.11, since Unicode can represent the HP-42S character set directly.
Excellent scientific calculator with expressions, fractions, repeating decimals.
HP GAS App is an android application to facilitates HP Gas consumers.