HP 15c Calculator Customer Service

HP 15c Calculator Positive Reviews

HP 15cGreat reproduction of the classic! Works great in the iPhone 6. I'm an electrical engineer who still depends on my 15c. Main complaint is the very loud clicks for the buttons which is very annoying, especially since there is no way to disable or lower its volume from within the ap. Turning off the ringer on the side of the iPhone to disable sound works but is unacceptable. Hopefully HP will fix this soon - especially if enough of us complain. However, the calculating capabilities work exactly as the original..MEJPEVersion: 2.0.1

Data ScientistWe need an iOS compatible upgrades from HP soon!! I've used HP calculators most of my life, since my first HP67 in 1980. I still have it. I have many others: 34C, 11C, 12C, 15C, 41CV, 48GX. No other calculator type, has ever surpassed the HP family. EVER. I prefer to use the real ones only occasionally now, because there are no more replacement parts. However, The emulators for the iPhone are so nice to have and I use them regularly, and they're all in my pocket on the iPhone 6s+. Phone size is about the actual size of the real machines too. I love em. HP needs to update the 12 and 15 soon though. Apple says they are not compatible with future versions of iOS. Other developers are keeping up with their HP emulators, some of which are very nice. I think HP would have a profitable business unit if they took seriously bringing these great little computing machines back to life in the whole family of reasonably priced emulators. However, for now, is be grateful if they would just ensure their existing emulators are compatible with future iOS versions. Kindest Regards,.AI ArchitectVersion: 2.0.1

HP calculator enthusiastThis is a superb emulation of the original Hewlett-Packard HP 15C calculator. I should know. I had an HP 15C when it was new. It took me through physics and calculus in college and the start of my engineering career. Regretfully a trip though the washer and dryer in the pocket of a jacket killed that calculator. I have bought and used other calculators but the 15C has always remained my favorite. When I saw this app, and it was made by Hewlett-Packard, I did not hesitate to purchase it. Reports the the app does not work with the latest iOS are out of date. Hewlett-Packard updated the app and it works flawlessly. As of this review I am using iOS 12.1.4..Skip watermanVersion: 2.1.2

I love It July 2015I put the date I purchased it here since I know there must be a lot of versions. I have tried every RPN calculator out there. I like this one the best. The horizontal is a perfect rendition of the classic calculator. In Vertical the choices were made perfectly. A reciprocal key and a square root key are the only functions. Both of these are handy for quick calculations I make in vertical mode. Also the keyboard area is not cluttered with ads or even settings. To change the FIX for digits you must go horizontal. The elegance and simplicity are ideal..FotoheadVersion: 2.0.1

Perfect! v2.0.1I don't have the key click sound issue reported by other user (my device is iPhone 4, iOS 5.1). Settings work perfectly, turning sound on and off as it should be. The version number is wrong as usernickname mentions, still showing v1.1 in about. The manual is working now, but it could be better if we had a search tool to locate subjects through a key word as we can do by reading in pdf files. Despite those points I mentioned above, for me the app as is deserves the 5 stars. I have an old real 11C calculator that has more than 30 years old, still working fine, and my only complaint was that it could not be with me all the time. Now, this problem was solved with this 15C version in my iPhone and I am very happy. Thank you so much!.@BrazilVersion: 2.0.1

Love my 15CGreat app! Best emulation of the 15C I have found. A little overpriced, but to those of us who have grown up with the finest calculator ever made (in my opinion), it is worth it. An update is overdue that would allow turning off the key click within the app. I know the ringer switch does silence the app, but I find it a nuisance to have to switch it on and off every time I use the calculator. Also would be nice to take advantage of the additional real estate offered by the iPhone 5..Nick4795Version: 2.0.1

This Is How You Do It RightThe HP 15C app gets it. No bloat. No redesign for the sake of trend-chasing. Just the original layout, faithfully reproduced, working exactly as you’d expect. This isn’t just nostalgia—it’s utility. The horizontal mode gives you that classic hardware feel. The vertical layout? Focused and distraction-free. Together, they make this app a joy to use for anyone who actually knows what they’re doing. Some people left low ratings. Honestly? That says more about them than the app. If you need a manual to know why this is great, it probably wasn’t made for you. To the developers: thank you for not fixing what wasn’t broken. You built a tool that respects the past and still performs in the present. That’s rare. Five stars. No hesitation..TommetrickVersion: 2.3.4

App is true to the original, latest update caused display issuesI don’t know whether it’s related to an iOS update, the latest (2.3.2) app update, or a setting on my phone (iPhone 11, 13.3.1), but the font size has been reduced on both the landscape and portrait views and the display numerals’ location has been moved out of the display area on the portrait view. Please update the app or advise potential causes and solutions to this problem. Thank you!.OttersRock!Version: 2.3.2

Excellent!Great to have an HP 15C again. I've been really bummed since my original calculator crashed. The layout is perfect on the iPad and the "keys" are perfect for large hands. Note: you have to hold the iPad in landscape orientation to get the full 15C layout shown on the left above (with trig functions, etc.). If the iPad is held in the portrait orientation, you only get the basic arithmetic operations (shown above on the right). It's not immediately obvious at first how to switch the visual modes..Console REVersion: 2.0.1

Quality app - great graphicsI found this app to be wonderful. At first I was frustrated with it as it would not switch to landscape mode which is were most of the functions become available. Found I had to switch off rotation lock to get the app to work in landscape mode! Love the look of this app, great quality graphics! And I love RPN calculators. Expensive app, but then all HP products are expensive..SugolfguyVersion: 2.1.2

Need a way to remove shadow effect from displayLove the app, just as I love my (still working) real HP15c. But there should be a way to remove the "shadows" from the numerical display in the app. In the real world, the shadow is a real 3D effect, and can be controlled by moving the calc with respect to ones eyes or the light source. Obviously this is not possible with the app, and to me just results in lowering the legibility of the display. There should be an option to turn off the shadowing..PfingstonrVersion: 2.0.1

Works well on iPadOS 13.1.2With so many recent negative reviews related to iOS 13, I’ve never tried on 13 until this holiday season (December 2019). HP did not update the version number nor the date but just for the record, this app actually works well on iPhone iOS 13 and iPad iPadOS 13.1.2 Excellent job HP calc, as usual. Very happy holidays! p.s. This app runs blazing fast if you happen to have an original HP-15C to compare with :-).FloatingPoint FormosaVersion: 2.1.2

Nice to haveI’ve always liked this series of calculator. This one duplicates all the functions of the original. A plus is that as it’s on my phone, it’s always with me. A minus is that on my phone, an iPhone X, the keys are somewhat smaller than the original, and as it’s a touchscreen, it’s easier to accidentally hit the adjacent key, than on the original HP calculator. All-in-all, a very worthwhile tool to have..Sea_SaltVersion: 2.1.2

Almost as good as the real thingStill my favorite calculator of all time--since freshman year in 1985, anyway, and my 15c stills work perfectly. But this app is the next best thing, for when I'm not in my office. One star off for the $15 price though. (To the people complaining about the clicking, go to the iPad/iPhone settings and there is a preference for the 15c where you can turn off the clicks, set rotation lock, etc.).Idle0302Version: 2.0.1

Now virtually perfectThe key-click control actually has to be changed in your phone's Settings menu , not from within the app itself; that's fine. At least the horrible key clicks can now be turned off. The slight tweaks to the look are good. I'm glad to has CLR X on the portrait-mode keyboard; I would have preferred BSP, but CLR X is ok. Now, this app is just excellent. This is an essential app for me..GollnickVersion: 2.0.1

Request for Function: Copy & PasteLove the calculator—it takes me back to my engineering school days. My one gripe is that there does not seem to be a way to copy a result for use in another program. That makes this difficult to use this with all the other programs on the iPhone/iPad. Implement at least a copy function and I’ll give it 5 stars..Pilotjim99Version: 2.1.2

Pretty, powerful, some bugsThis is a full-featured and good looking emulation of my original and beloved HP 15C Scientific RPN calculator (I still use a Limited Edition version today). That said, it’s a little buggy in annoying but harmless ways. For example, in portrait mode, the displayed numbers aren’t actually positioned in the display (on both iPad and iPhone). And results from running or numerically integrating a programmer function leave the displayed numbers in a flashing state..JLBivVersion: 2.3.2

Five stars for retro look, 3 for valueLike the RPN fan that I am, I bought this. I don't regret it but it really is overpriced. I feel like I paid $10 for the calculator and $5 for the pretty graphics. But that is not a complaint. You may wish to also consider PCalc and other great RPN calculators on the App Store but be sure they are programmable if you need that..AvnrkVersion: 2.0.1

Display flashes?Now that the calculator division is under “new management”, could we please get an update to stop the display flashing? Write a simple program. Run it. Display flashes. Even just pressing R/S. This is not how a real HP 15C works. 15C is still an amazing calculator, just wish implementation on iOS was done a little better, a little more care taken, especially by the company that designed and produced it..Kevin37753Version: 2.3.4

Numbers are not in calculator display windowI just upgraded to the iPhone 12 Pro Max with iOS 14.2. The numbers now show up below the calculator display window. This problem did not happen with the iPhone 11 Pro Max running the same iOS. Otherwise the calculator appears to be working normally. Please fix this bug..Gaijin88Version: 2.3.2

Hp15CThis is a great app for one of the best calculators ever made. Pricey for an app but cheap compared to buying on of the real things. Many are complaining about the clicking of the keys and rightfully so. However, just go into the iphone Settings, scroll down to the HP15C program and there is a setting to turn this off..Arobe35999Version: 2.0.1

Screen issuesI've used this app for years and years. The latest version, combined with the latest iPhone update shows the screen entries off center from the calculator screen when in the vertical mode. Does anyone have any idea how to fix this??..Jjk123$Version: 2.3.2

Thanks for the 64 bit updateThis is my go-to calculator app on my iPhone and iPad. I was expecting to have to find something else once I realized it didn’t work on the late beta software. At home I grab my hardware 15C for most things, this is the next best option. Thanks for updating it!.Djf1025678Version: 2.1.2

Perfect now!Thanks, HP, for fixing the two issues another user reported! This is fantastic! My actual 15C I use almost every day, despite it being almost 30 years old. This app brings a smile to my face every time I open it..Futile123Version: 2.0.1

The Original Engineering CalculatorHP created an actual emulator of the ROM of the original HP-15C. Therefore, guaranteed to be faithful emulation of the original! As is the case with the other HP Voyager series calculators. Excellent! My only wish is that HP would release the HP-16C computer scientist calculator as well so I can complete my collection!.Mac.pro.userVersion: 2.3.4

Needs an update for iPhone 5The landscape mode on iPhone 5 does not use all screen real estate. The title bar with time and so on is unnecessary and takes up valuable space. The screen also does not use all the iPhone 5s space leaving two black bars on the side. Another waste. Needs an update to make it a real FULL SCREEN APP on iPhone 5..Kapitaler19Version: 2.0.1

Don't let my iPhone 15C die!Apple has been informing me "This app will not work with future versions of iOS." please update the app. I'm not ready to give up RPN, but I'm also not ready to carry my 15C with me as a separate device. 5 star rating applies only until I lose my app..ManBitesAppleVersion: 2.0.1

Display BugI use this all the time. I have a physical 11C I’ve had a very long time. They are my favorite calculators. With version 2.3.2 in the portrait (simple calculator) view on my iPhone 11 Pro Max the numbers do not appear in the display window but rather lower and to the right..Fpk254Version: 2.3.2

Very Nice!Seems to emulate 15C functions perfectly, but I have not yet checked out programming capabilities. For those that find the key clicking annoying, it can be disabled by going into your iDevice settings, scroll down until you see "15C", and the first option is to enable/disable the key clicks..WeinstroVersion: 2.0.1

Can't turn off button soundThis version is an improvement! The keyboard is correct, and the manual works, but you still can't mute the incredibly loud button sounds. This makes it difficult to use in meeting, and frankly gets annoying with prolonged use at any time. Come on, HP fix this issue get 2 more stars!!.BtwokcVersion: 2.0.1

My fave calculator!Thank you for bringing back my fave calculator from the 32-bit grave!! I still have the hardware model from the 80’s that I continue to use (just get new batteries every 10 years or so), but I love having this one on my iPad and phone. Much appreciated!!!.CeelieVersion: 2.1.2

The best oneI've tried several of these by different developers. This is by far the best one. It works exactly like my 15c. Well worth the money. I'm using it on an iPhone 6 Plus. The graphics are beautiful. I turned off the clicking sound..KelotrbrbrVersion: 2.0.1

Needs software update.I recently received a message that this version of the app will not be supported on future iOS releases. I hope HP will continue to support it and come out with an update soon. I'm currently using iOS 10.3. It's a great calculator otherwise..AllanDCVersion: 2.0.1

Now for iOS 11Thus now works on iOS 11. Don't be scared off by old reviews. HP has finally updated the app to work on current devices (circa 2017). It works great - just like my old 15C from my college days. If you like to use RPN logic - buy this app..Traffic_docVersion: 2.1.2

64 bit HP 15C!!Thank goodness it’s here! The app is awesome. The original calculator is the awesome progenitor (I still have it from the early eighties and I love it: it continues to work.) It is the best scientific hand calculator ever made and the app is true to the originals functionality and works great on the iPhone!.Joisey PaulVersion: 2.1.2

HP 15C Limited EditionAfter installing app I was surprised that there was no trig or programming but the calculator switches to all features mode when rotated from portrait to landscape. The manual displays nicely too. I was puzzled by limited edition and discovered HP has reissued the 15C hardware recently and is available for ordering as of June 2012..NekomacVersion: 2.0.1

Thanks for the 64-bit update! Awesome!Thanks for updating this app To support 64-bit HP!! I actually deleted it on Tuesday after updating to iOS 11 as it was no Longer working. But now that it is again, it’s back on my iPhone! Simply the best RPN calculator!.JollyJosephVersion: 2.1.2

Much improved versionWorks on the new IOS 11, and the key stroke-to-sound latency issue on the old app is fixed. For those like me who can’t use any other calculator, it’s worth springing for!.BillfishcoVersion: 2.1.2

Great appLove it. Can’t find the real thing at a reasonable price so this is a welcome stand-in. Five stars for you! I just discovered a bug this morning, though. The inverse trig functions ignore the degrees/radians/grads setting and always return an answer in radians..Foo on YouVersion: 2.3.2

To use on iOS 12, delete & ReinstallUpdated to iOS 12 and it stopped working. I deleted it and powered down iPhone. Restarted and re-installed and it works again..Levee loverVersion: 2.1.2

More iPhone 11 issues.Love this app. Used a 15-C getting 2 engineering degrees in my distant past. In addition to the display misalignments reported reported on the iPhone 11 by other users, with this latest update, the “flip” function no longer works when trying to return to landscape mode after pressing the “15-C” logo at top left..Mo D AllophoneVersion: 2.3.2

Another Retired Old UserHas worked great through numerous versions of iOS now 15.1. Would love an upgrade to enable cutting and pasting for entering and saving numbers. Still have my old HP, used it with a pencil and paper. Now it would be better to cut and paste numbers to and from other programs. It’s a great calculator, could be better..Card SnarkVersion: 2.3.4

Best Calculator everIve been using the 15C since the early ‘80’s. This app has been a welcomed addition. RPN is a habit and once mastered, you can’t use a normal calculator. Thanks for this app. Been using it for years now.TitaniumsteeleVersion: 2.3.2

64-bit SupportFinally added 64-bit support the day after iOS 11 came out! Thank you..The_Night_OwlVersion: 2.1.2

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HP 15c Calculator Negative Reviews

App no longer has large enough characters after last updatePaid $45 each for HP15C and HP12 apps in the store (!). Last update made numeric characters and icons on my iPhone XR far smaller difficult to use in HP15C app, both simplified and full versions. HP 12C still OK. Called HP support, tried the web support page used for my other HP equipment purchases, got someone in handheld calculators who sent my message into the bit bucket, 2 months later, several reinstalls, not fixed. it appears the apps are orphans in the giant HP system. Too bad. I have an antique irreplaceable real HP15C which eats batteries which I don’t wish to destroy. Hopefully someone at HP or Apple flags bad reviews, sends a smoke signal to HP who will take action..PenroseInverseVersion: 2.3.2

Fix this pleaseThis is a horrible mess. I am stunned that HP, a company long known for quality hardware, would let this appear on the App Store. When subroutines finish executing the contents of the x register flash endlessly on the display. The only way to make it stop is to press some key which of course changes the contents of the x register and pops the stack! For a while, pressing the function key f then prefix would lock up the calculator, displaying the mantissa, instead of timing out after one second and returning to a normal display. Now it’s ok. So that’s going to be an intermittent bug. But come on, people. Just fix the flashing subroutine result problem. Where do I go to get my $15 back?. Retro 15C works just fine and it’s free..Jerry’s old Apple IDVersion: 2.1.2

A classicUpdate: It's been almost two years since this app was last updated. It still doesn't make use of the larger iPhone 5 screen. The bug that causes the display to flash after running a program or using the combinations/permutations functions still hasn't been fixed. And, there's still no way to control the key click volume independently. It's a shame that HP seems to have abandoned this app... -- It's great to have an authentic HP 15C on my iPhone. I've been a fan of HP's RPN calculators for years, starting with the trusty HP 25 that got me through college. The built-in manual and alternate portrait layout are nice additions. One bug: After using either the combinations (Cy,x) or permutations (Py,x) statistical functions, the display flashes continuously until some other key is pressed (on my iPhone 4S running iOS 5.1, anyway). Also, as others have noted, the key click sound is annoying to the point where I've muted it entirely. It would be nice to have a choice of sounds or the ability to control the volume separately..Bob FranceVersion: 2.0.1

OK app. But pricey. Needs polishing.UPDATE: HP update this app for screen size and key size! With new iPhones released with larger screens, it is possible to have a calculator app that is practical to use with accurate key entry. However, this app is still small on the larger (iPhone X) screens. Live up to your reputation and don’t let this app tarnish these great calculators. HP has fixed the obnoxious click of the buttons. I'm still waiting for HP to fix this app and it will become my first choice calc. for now its in a folder on page 7. It seems like the "target" area for the buttons (iPhone) is a bit small. I miss the buttons with this app more often than with others calculator apps. It's very close to being great, but these small items keep me from wanting to use it. I can't afford mistakes from missing buttons in my job. Having invested $15, I hope HP is responsive and fixes these items. Until then I have a better, less expensive 48sx emulator with bigger buttons and a viewable stack..Bubba-007Version: 2.1.2

Not iOS compatibleLove the calculator, but HP has not (and appears will not) update the app for iOS compatibility. Very, very disappointing in that it's an outstanding calculator and app to begin with. This speaks volumes about HP and their "concern" for their customers and clients. "Come spend your hard earned money with us, and we'll dump you the first chance we get." They say it's the little things in life that make a big difference. After this lack of concern for their customers I'm completely disinclined to purchase any HP products going forward. If I were in product development at HP I'd be massively embarrassed. Shame on you..Mediocre...Version: 2.1.2

Very Disappointing, waste of my moneyI had purchased the earlier version of the app but they stopped supporting it so I had to pay for it again to download it to my iPad Air. It was expensive enough the first time and to pay for it again was such an unfortunate waste. I had hoped they had improved upon it, most critically adding cut and paste support. Unfortunately no, they had only reissued it due to a digital signature snafu with Apple that caused my version to be obsolete. In fact they had hardly changed the app at all, mostly just to add the phrase "Limited Edition" to the app. Very disappointing..DwalthourVersion: 2.0.1

Numerals are not located correctly V2.3.2In portrait mode, the numerals that are displaying are showing up about 40% in and other 60% outside the “LCD” display window, on the metal frame. This bug just arrived with Version 2.3.2 running on an XR and iOS 13.3. It is just the numerals that are not located properly, the “hardware” looks OEM. In landscape mode, the white Apple line across the bottom to drag up to switch apps is now persistent and in the way of the STO, RCL, ENTER and 0 keys. In landscape mode, the numerals are smaller than they have been and are supposed to be..DieselBoundVersion: 2.3.2

The advertisment for this app is misleadingI downloaded and was charged for the iPad version of this app. I need a scientific calculator. The version for the iPad lacks trig and other scientific functions. I wouln NOT have wasted my time and money on this product, if it had been obvious that the iPad version did not include trig functions. This application is worse than useless. There are many free calculators, if all I wanted was to do arithmetic. I would rate it less than zero, if this were possible You should be ashamed for selling such a poor product.2012UNhappyVersion: 2.0.1

Fails to copy and pasteThose absolutely isolated the HP calculators from everything. Why can’t we copy and paste to and from their digital calculators? Maybe it can and I am just ignorant as to how? I’m a HO-41c users from forty years ago and it is still my favorite! It is so fast! But try getting the result from the calculator to anything else and you are stuck!.PostmasterVersion: 2.3.4

HP-15C Limited FunctionalityAfter Apple did the last upgrade to my iPhone5, the HP-15C no longer will change from a limited display of features to a full display when my iPhone is rotated 90 degrees. I have reloaded the app several times without success in obtaining the full functionality. Several friends have experienced the same loss of functionality - how do I obtain full functionality?.H&K ManVersion: 2.0.1

Upgrade broke it.The latest upgrade broke it, on my iPhone 11. The numbers are now out of place in both orientations. Please fix...!.MVWphotoVersion: 2.3.2

Not updated for iOS 11No 64 bit version -- current app does not work on iOS 11. No idea if it will be updated. (And no confidence as this has not seen any updates in years).Pro app DevVersion: 2.0.1

Great in landscape, buggy in portaitGreat calculator direct from HP, all the same algorithms as the original and it includes the manual. The portrait version, which is a nice touch to include, could be a lot better though. On the iPhone XR the digits aren't in the display area at all..Warder_clVersion: 2.3.2

All good on iOS 14.3Have used 15C on iPhone 10 for over 2 Yrs, with no issues. Upgraded to 11pro with 14.3, so far no problems👍.FunjobradVersion: 2.3.2

Programming problemsEntered 122 lines into programming triangle solutions to find that f ISG looping will not program. No SN or Product Number for the App so no access to technical or product support assistance. Pay your money and no support to back it up. Loved my 11c & 15c, for more than 25 years, buy an app and... Well times have changed. Additionally, repeated attempts to report the problem through iTunes Store have failed. Will not accept a report of a problem but will be happy to accept a review. HP sells apps for iPhones but their troubleshooting capability is tied to windows!!! Update: many months later... Nothing from HP. NO CHANGE, no progress, no fix, no attention, no regard for the quality of the product they took my money for. NEXT MESSAGE GOES TO APPLE. BOGUS PRODUCT..FindanicknamethatworksVersion: 2.0.1

Abnormal for HP productThe digit are not in they’re place on the screen of the iPhone X plus.Gbv86743Version: 2.3.2

Please update for iOS 11!!!Please update for iOS 11!!! I paid for this expecting it to be well supported. It works on my old 5C which is now, apparently, my calculator..Nico bug14Version: 2.1.2

No Kachunk!!!!!!!!!Why after updating did you get rid of the original key sound? If I wanted an iPhone tap sound I would download any calculator app for free! Please bring back the kchunk sound effect! Please!.CalgarychickadeeVersion: 2.1.2

We need this calculator updated!I’ve been using HP scientific calculators for forty years. The only HP15 I trust is the version offered by HP, but they haven’t updated it for IOS11. When will loyal HP customers’ needs be addressed?.Worldtraveller56Version: 2.1.2

Rip offIt's not what is being represented none of the functions are even there.... It's so bad.......Mudge1Version: 2.0.1

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