Delay in entering
I’ve had this app for many years, and has been a 5 star app for most of them. Somewhat recently there has been a delay in entering key strokes making it annoying to use. The HD (iPad) version doesn’t seem to suffer the same delay. Unfortunately, the iPhone is where I use it the most.
Sevens look like ones
The dynamic island of an iPhone 16 covers up the top of the display making the sevens look like ones.
A classic, with a lot of extras
Fun to have a replica of this machine that I first learned on 45 years ago.
Kind of fun to have the enhancements too, although these do stop short of current high-end apps. The best part, just as a way for any such app to extend the functionality of the keyboard, is actually the double-mode shift key, which gets you yellow functions on the first push and then red functions on the second push, before cycling back to neutral. Shows you how little you depend on having the shift key toggle back to neutral on the very next push: pretty rarely. One more push won’t hurt you.
ENGineering display mode is something I use a lot, a nice update to have, and also the HYPerbolics button. And the additional STO/RCL registers are welcome. And the regression and estimate keys, and permutations/combinations, could come in handy, though I haven’t tried them yet, And the quadratic/cubic solver.
The complex numbers are a nice addition too, similar to the 15c treatment although with some different special-function keys.
The simultaneous equation solvers are ok too, I suppose, though as matrix math they’re kind of a one-trick pony compared to the 15c’s treatment (Vicinno for instance) which will handle five matrices of any shape, not just three that are one square and two column vectors — and will let you perform any operation you like with them, not just solve simultaneous equations.
So except for the nostalgia trip, my first choice for a capable two-shift-button machine with quickly accessible functions is actually the 15c. (Which also is programmable.)
Or if you really want a workhorse-machine app you should get Thomas Okken’s Free42 — an open-source rewrite of the HP42s — which has a lot more functions and shows two stack levels and both halves of a complex number, so it’s way easier to keep track of what you’re doing, And lets you write alphanumeric labels for programs, variables, matrices, etc. But does pay for having so much power by having many of the functions somewhat buried in menus, not as quick to reach as on the 45 or the 15c,
But I do enjoy having the 45 around, and it does do way more than you’d ever expect a 45 replica to do.
Kind of fun to have the enhancements too, although these do stop short of current high-end apps. The best part, just as a way for any such app to extend the functionality of the keyboard, is actually the double-mode shift key, which gets you yellow functions on the first push and then red functions on the second push, before cycling back to neutral. Shows you how little you depend on having the shift key toggle back to neutral on the very next push: pretty rarely. One more push won’t hurt you.
ENGineering display mode is something I use a lot, a nice update to have, and also the HYPerbolics button. And the additional STO/RCL registers are welcome. And the regression and estimate keys, and permutations/combinations, could come in handy, though I haven’t tried them yet, And the quadratic/cubic solver.
The complex numbers are a nice addition too, similar to the 15c treatment although with some different special-function keys.
The simultaneous equation solvers are ok too, I suppose, though as matrix math they’re kind of a one-trick pony compared to the 15c’s treatment (Vicinno for instance) which will handle five matrices of any shape, not just three that are one square and two column vectors — and will let you perform any operation you like with them, not just solve simultaneous equations.
So except for the nostalgia trip, my first choice for a capable two-shift-button machine with quickly accessible functions is actually the 15c. (Which also is programmable.)
Or if you really want a workhorse-machine app you should get Thomas Okken’s Free42 — an open-source rewrite of the HP42s — which has a lot more functions and shows two stack levels and both halves of a complex number, so it’s way easier to keep track of what you’re doing, And lets you write alphanumeric labels for programs, variables, matrices, etc. But does pay for having so much power by having many of the functions somewhat buried in menus, not as quick to reach as on the 45 or the 15c,
But I do enjoy having the 45 around, and it does do way more than you’d ever expect a 45 replica to do.
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HP 45
sehr gute App, habe noch meinen Original HP 45 von 1974, hat damals ca 1.500,- DM gekostet, wollte mir immer neuen Akku kaufen, brauche ich Dank dieser App nicht mehr.
Tasten sind etwas gewöhnungsbedürtig, das ist natürlich bei dem größeren Original besser.
Mich stört, das der Tastaturklick immer wieder auf die voreingestellte, viel zu laute, Lautstärke zurückspringt
Tasten sind etwas gewöhnungsbedürtig, das ist natürlich bei dem größeren Original besser.
Mich stört, das der Tastaturklick immer wieder auf die voreingestellte, viel zu laute, Lautstärke zurückspringt
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Best by Far
Have been using HP RPN calculators since HP-35 first came out. The cuvée versions for Apple products are the best emulations by far. I have, and regularly use, them all. Keep up the great work
