Leave a Review MathU RPN Calc
Mechanical Engineer, PE
Awsome caclulator (better interface than 42 and faster), but to be the best needs conversions and constants. With this enhancement, will surpass the other calcs out there!Tom the ME with a PE
Best RPN calculator so far, but could be better.
I had been using PCalc, but I now use MathU exclusively. I greatly prefer MathU's fast and clean response to key strokes, which makes PCalc seem clunky and lethargic in comparison. Also MathU comes up instantly when launched, compared to PCalc's annoying delay. Furthermore, MathU has a much richer function set, and yet has only the essentials. In particular MathU goes well beyond PCalc with the necessary statistical, financial, and programmer operations. However MathU could use improvements in several areas. First and foremost, MathU needs a second display line for the Y register. (I'm fine if that's a user option.) There is a huge amount of wasted display space at the bottom in both the portrait and landscape modes. Just move those keys down and put in a second display line! Second, I would like some unit conversions and maybe some constants. This is an area where PCalc shines (though the PCalc interface to use them leaves something to be desired). I would at least like some basic English-Metric conversions. Third, the iPhone interface is not being used to even a fraction of its potential. The keyboard does not have to be so static. How about having the f or g functions magnified and highlighted when f or g is pressed? A swipe down on the display could show the whole stack, and a tap could restore the keyboard. Swipes on the keyboard up, down, right, or left could navigate a small two-dimensional array of alternate keyboard layouts (2x2 or maybe 3x3, but no more). E.g. a math one with reciprocal, square root, y^x, etc. on the top row, and another with the hex digits on the top row for programmer mode, and another with unit conversions and access to physical constants. How about swiping left or right on the display undoing or redoing operations (like PCalc)? That sort of thing. Fourth, I wouldn't mind a selectable mode with a more modern HP variable size stack with the swap, drop, and roll operations. Lastly, whatever happened to RootM from the Palm (by the same author)? I really liked that keyboard layout, and complex number operations. Maybe not for everybody, but I sure found that useful. Some have asked for programmability. That would be low priority for me. If I need to program something, I'm probably not using the calculator. Overall I highly recommend MathU for anyone looking for an RPN calculator on their iPhone. I hope that the author continues to refine it for this platform. * Reviewer qualifications: I have been using HP RPN calculators or HP look-and-feel-alikes for about 35 years. I have my own little HP calculator museum. Since the author so prominently notes this in the application description, I also have a Ph.D., though in my case from a better school, Caltech. ;-)Show lessMark Adler
Nice Calculator, Well Worth the Price
This calc is highly functional, and a daily asset. I own the 12C calcs and also a older HP scientific RPN calc and this is a nice companion. The only thing that I hope will be included in the future is Date calculations like on the 12C and also built in help instead of having to go to the company's website. If the built in help cannot or will not be done then Creative Creek should make the reference manual availble in PDF format so that Iphone Air Share user can FTP the manual to there devices. As it stand right now the reference is only available in HTML format which is not efficient for portable devices.Show lessDuckeedoug
One big flaw
Good calculator, but a deal breaker for me is that you can only view one line of the stack at a time. I feel like I'm working with blinders on!Calculator bob
Good but not great
The actual program is an excellent comprehensive RPN calculator.
The interface needs work. It would be helpful if the f and g functions highlighted when shifted. The hex/dec/bin should be more consistant as to placement and shift. Better yet the layout should shift depending on mode.
One annoyance, if you have a 6% annual interest rate the monthly rate is not 6%/12. It is (12th root of 1.06) - 1.Show lessRbooks
As good as it gets
As a long-time user of the Palm version of MathU I was very happy to see it become available for my phone. I no longer need to carry my Palm (R.I.P.). After a very short "break-in" period, and learning that [G][G] gave me access to preferences such as the number of digits, I am using this version as readily as the Palm version. The iPhone version is elegant, easy to use and versatile. This app could serve as a standard for iPhone programs. Bravo!Show lesspghEddie
Thousands Commas
Love this app. Now I don't have to carry my 12c around as well. Maybe I just can't figure this out, but does anyone know how to set preferences to display commas to show thousands separated? Having this feature, would sure be helpful to me.dansm15
Almost Perfect
OK, I've had (have) MathU Pro on my Palm Tungsten & my mobile PC phone. So I had to get it for my iPod Touch. For most calculations it works as it does on the other 2 platforms (which is perfect), but there are a couple of things that could improve it: 1) Add programability. 2) Make it so that ABCDEF entry while in Hex mode is not a 'g' function. I'm thinking that if I'm doing hexadecimal calculations that I am not doing financial work; which are the unshifted functions of the same "keys.". 3) Be able to review registers. I've used an RPN calculator since my first HP11 24 years ago (Actually I still have it and it still works), and have trouble with arithmetic entry anymore.Show lessRPNlover
This is the RPN Calculator to Get
An old favorite, nay necessity, from my Palm days, I'm very happy to have this essential application for my iPod Touch. It works just like an old school HP Calculator, circa the HP-11 and 12 series, with the added bonus of an extended stack and scientific as well as financial functions. The original for the Palm was programable and there were several program suites that you can add on -- I hope these feature are forthcoming. However, given the excellent execution of this program, it's ease of use, and Creative Creek's very fine customer service, I do not hesitate giving this app 5 stars. Well done!Show lessgar in oakland
Best PRN Calculator
I only bought the G3 because this program was coming. The Palm version is great. I hope this one will be upgraded to match the Palm version in short order.Doug69
