C is for Continuous Memory
Please find a way for the app to remember the data and program. Right now, anything you enter is lost when the App is restarted.AJ Mexico
Bliss
Oh, how terribly I have missed my 15C that I lost in a move. This is like old home days.Geometaphors
Like this better than other paid versions
Pros- display is great and solid calculator. I actually paid for another and returned to this one due to better numeric display.
Cons- would like keyboard to shift when turning phone. Image of keyboard has dust on it.wcdsid itunes
Best calculator on my iPhone
I grew up using HP calculators. Used an HP-45 for many years, then got a 15C for work. Still works great. Only changed the batteries twice since I got it in 1984.
This little gem is absolutely wonderful to have on my phone. It gets used at work and home. RPN is so much faster and efficient for me. It's great to have a calculator like this with me all the time.
Thank you for updating it to work with the new iOS. I was wondering what l would do if it didn't work anymore.baddog42
Huge Giant Thanks
This is simply the best! Thank you for bringing back such great memories. This is my favorite app ever. Period.Rocking Soundtrack Guy
My real 15C is 31 years old
The batteries need to be changed after a couple of decades and found this app while wistfully reminiscing about my trusty 15c which got me through engineering school! Honestly, it made my day. Maybe even my week, or year!marathon mom!
Outstanding!
Never owned a 15, other HPs though.
This is simply outstanding! H & P would be proud! Works well and is my "standard" calculator.
Thanks!rfjohn
Love my 15C
Great to use my favorite tool on my iPhone. Q: Does anyone know how to change digit separator? The ON button is MENU in the app....Subvener
One of my favorite apps!
Thank you for updating this app! As a user of the HP15C since the mid-80's, this app has been an absolute delight.Good & Faithful Son
Curious
Good news: This app is still supported. With no updates (until now) since its original release in 2012, combined with that horrible splash screen iOS 10 slapped on it, that the app was no longer supported, I was a bit worried about the future of what has been my favorite calculator app. With this update, that fear goes away.
The only flaw in this emulation is that the 15C emulator loses ALL data and programming if the app is exited by double-clicking the home key. I can think of NOTHING else wrong with this app.
I am a bit concerned that (one) the name is changed to "Retro 15C," something about iTunes not allowing the word "free" in the name of an app. And (two), I am disappointed by the removal of "HP" in the "HP 15C" logo at the top right of the calculator. Likely, another problem either with iTunes or HP itself. Not a big issue, but I did really like the appearance of the original app, which was pretty much a photograph of a real 15C.
ONE RECOMMENDATION, perhaps off-point, but the HP 15C was one of a pair of must-have calculators, the other being the HP 12C, essentially a financial version of the HP 15C. This would be the perfect complement of perhaps the two most useful and friendly calculators ever manufactured.
Even to this day, I have both calculators. I love this 15C emulation. Wish I had a decent 12C emulation.Cheapskate01
