Not worth it
Just purchased this app. It has an obnoxious clicking sound when pressing any button, and it cannot be turned off. Will be seeking refund.
Used to be great, but now terribly slow
Slower than 1987 real calculator, how possible
Moins bien qu’une autre application
J’avais l’application touch 11i. Bien mieux. Malheureusement d’un seul coup elle a arrêté de fonctionner. Celle application fonctionne mais pas très agréable. Impossible de la mettre verticale. De paramétrer le bruit des touches ….
Not functional
I have an iPhone 16. With the phone position sideways the calculator works excellent. My rotate vertical the image does not rotate. Also, there’s no access to settings as shown in the pictures. Lastly, it’s very difficult to close the app to move to something else. The normal swipe doesn’t work.
Excellent App and Sci Calc
This is an excellent app and HP 15C Scientific Calculator. I teach AP Calculus BC, and I use it often for my calculations. The user interface is clear and accurate, and the calculations are accurate. Highly recommended.
App essentielle
La meilleure app, simulant l’une des meilleures calculatrices scientifiques HP.
Je l’utilise au quotidien, en remplacement de ma 15C, quand je ne l’ai pas sous la main. Un très beau boulot, en tous points conforme à l’original.
Je l’utilise au quotidien, en remplacement de ma 15C, quand je ne l’ai pas sous la main. Un très beau boulot, en tous points conforme à l’original.
Great Tool
Works just as good as the original. And as long as I have my phone it is with me and ready to go!
Reliable through four years of use
Same as college days. Reverse Polish notation is the best. If you loved the device, this app is for you.
Mr. Luizon
Outstanding
Stuck in RAD?
g DEG 60 COS I get -.95, the RAD answer. But RAD is not on the display. What am I doing wrong? How do I get to degrees? g DEG does not seem to work. This is my only known question on my beloved 15C app.
Thank you!!
Thank you!!
Just like college
The HP 15C got me through four years of computer science, physics and electrical engineering. This is the same and it’s programmable just like the 15C. Cool beans.
My 11C finally crashed
I’m so relieved that I can now have my scientific reverse Polish calculator on my phone. So far I’ve not found any problems, it seems familiar like the physical version and I’m very happy.
Versio 2.3 did not fix the bugs in 2.0
It seems that Viccino stopped maintaining this paid app. A real shame. The problems in version 2.0 are still present in 2.3: rotation problems, no settings, no back page and display half calculator when in portrait mode. Please try again. I used to love this calculator.
Works like the old fashioned RPN calc
It even has the sound like an hp calc when you press the keys. Well executed app.
Great APp
Für alle, die die alten HPs lieben: eine tolle App, die das iPhone in einen richtigen Taschenrechner wandelt!
Works exactly like my hardware 15C
This is a great app that works like my hardware version. I used the 15C long before this app existed but find I now log more time on this iPad version. I recommend this app without hesitation.
my HP 15C version of choice
there are a few HP-15C calculators available on the App Store. Most of them commercial version that cost money. Vicinno Soft's is free and BY FAR the best one I've tested. And free. What else can you ask for?
The only drawback is the iPad version, which has the problem that it needs to be started while the iPad is in a vertical position. It will start "sideways", and the iPad can be rotated then, all good. But if the iPad is rotated first, and the app started then, it shows up only as a half. It detects the orientation of the iPad at start, and then behaves as if it was running on an iPhone. Although the iPad has enough real estate to show the full calculator in any position.
But that is only a minor annoyance, and since the calculator is free, nothing to complain about.
Thank you, Vicinno Soft, for the great product!
The only drawback is the iPad version, which has the problem that it needs to be started while the iPad is in a vertical position. It will start "sideways", and the iPad can be rotated then, all good. But if the iPad is rotated first, and the app started then, it shows up only as a half. It detects the orientation of the iPad at start, and then behaves as if it was running on an iPhone. Although the iPad has enough real estate to show the full calculator in any position.
But that is only a minor annoyance, and since the calculator is free, nothing to complain about.
Thank you, Vicinno Soft, for the great product!
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Wonderful
Inverse Polish notation is far faster way to do calculations. A perfect alternative to using my genuine HP15C from the late eighties
HP15C
Found this app and bought immediately. I felt like I found an old friend. Best machine ever for engineering calcs
Works Great...Control Center Coming?
Now my iPhone is complete! Now if I could only add it to the Control Center life world peace would be achieved!
