---
title: "15C Pro Scientific Calculator - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "15C scientific calculator is a high-end scientific programmable calculator for iPhone and iPod touch, which behaves exactly like, and supports all functions of HP 15C Scientific Calculator.   "15C Sci"
---

# 15C Pro Scientific Calculator — United States
> HP 15C emulator

![15C Pro Scientific Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/48/1b/53/481b53fa-d175-1cf0-8db5-ecd2a2a8fa97/AppIcon-0-0-1x_U007emarketing-0-0-0-7-85-220.png/434x0w.png)

**Developer:** [Vicinno Soft](https://apptail.io/developer/vicinno-soft-vCo) (United States)
**Category:** Utilities
**Rating:** 3.8/5 (280 ratings)
**Price:** Free
**Bundle ID:** com.vicinno.15CCalc
**Store:** Apple App Store
**Country:** United States
**Version:** 2.3 (released 2020-04-16)
**Original Release:** 2011-02-26
**Languages:** Spanish, German, Catalan, Czech, Chinese, Korean, Danish, Slovak, Finnish, French, Greek (modern), Hebrew (modern), Hungarian, Indonesian, English, Italian, Japanese, Malay, Dutch, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Swedish, Thai, Turkish, Vietnamese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id421102285)
**AppTail Page:** [https://apptail.io/app/15c-pro-scientific-calculator-nGQc/united-states](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/united-states)

## 15C Pro Scientific Calculator Description
15C scientific calculator is a high-end scientific programmable calculator for iPhone and iPod touch, which behaves exactly like, and supports all functions of HP 15C Scientific Calculator. 

"15C Scientific Calculator supports complex numbers, intense calculations, matrix operations, and many other features that I don't have room to list. " -- AppGratis.com 

"This is a terrific emulation of the venerable HP-15C calculator -- the best one I've found in the App Store (and believe me, I've tried the others). Works just like the original, and it comes with a wealth of help functions -- pressing the Help button reveals the original User Manual and Advanced Functions Handbook in PDF format, as well as manuals for a number of other HP calculators. And it's always as close as your phone. " -- from app store review

"Does exactly what my HP15C does, and always with me in my pocket" -- David, Financial Analyst.

Built with identical mathematics and algorithms, it gives you same capabilities and better performance. It can perform numerical integration and solve the roots of equations in addition to supporting complex numbers and matrix calculations. 

**** Features ****

• Root finder 
• Numeric integration 
• Complex numbers 
• Matrix operations 
• Hyperbolic and inverse hyperbolic trig functions 
• Probability (combinations and permutations) 
• Factorial, % change, and absolute value 
• Random number generator 
• RPN entry 
• Programmable 
• Option to disable/enable key click feedback sound 
• Automatically save/restore settings during app close/start 
• Click menu key to see more options. 
• More ... 

**** Support **** 

Feel free to contact us if you need any support by visiting www.vicinno.com or simply email us at support@vicinno.com. 

**** Stay tuned ****

Like us: www.facebook.com/vicinno
Follow us: www.twitter.com/vicinno

## 15C Pro Scientific Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/12/89/b6/1289b6a8-96bf-c546-39fd-0f8a8f426666/mzl.utudwcco.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/0f/81/dc/0f81dc76-0bcf-7ba7-6bd6-ed8aa29b28f8/mzl.jtzycmkg.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/08/f9/ea/08f9ea2b-1dd5-6b86-d976-ffa22d1ef58b/mzl.eneufpwo.png/640x960.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/a7/94/0b/a7940b76-33b4-331c-3de1-659d6adaa861/mzl.xrwuazor.png/640x960.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/c9/4b/37/c94b370b-2012-3211-8073-d19facac9c33/mzl.bauzjkvj.png/640x960.png)

## 15C Pro Scientific Calculator Rating Breakdown in United States
- 5 stars: 161 (57%)
- 4 stars: 38 (14%)
- 3 stars: 10 (4%)
- 2 stars: 4 (1%)
- 1 stars: 67 (24%)

## 15C Pro Scientific Calculator Reviews in United States

### ***-- "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.
-- NickBrent, 2024-10-18

### ***** "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.
-- Bill-from-SF, 2024-02-17

### ***** "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!
-- Experienced Bill, 2023-02-09

### ***** "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.
-- bsang, 2022-12-27

### ***** "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!!
-- Old Engineer, 2022-05-30

### ***** "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.
-- DancingInTheMountains, 2022-04-28

### ***** "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.
-- weeeeeeedere, 2022-04-05

### ***** "Works like the old fashioned RPN calc"
It even has the sound like an hp calc when you press the keys. Well executed app.
-- Sharktooth777, 2022-02-08

### ***** "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.
-- xutmf, 2021-11-26

### ***** "HP15C"
Found this app and bought immediately. I felt like I found an old friend. Best machine ever for engineering calcs
-- Bob Tosi, 2021-01-29

### ***** "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!
-- mcdeangelo, 2020-12-03

### ***** "Best 15C app out there"
As well as being affordable, this app seems to properly save the state of the calculator, including programs and registers, when the program is stopped or the IPhone rebooted. The free app and HP’s overpriced official version do not, a disqualifying flaw.  Who wants to re-enter their programs whenever their device reboots?

 No flashing display after running a program, a silly uncorrected bug in HP’s app. Plus, this one has a well-done portrait mode and an excellent help that includes the full manual. The key clicks sound good and are switchable from within the app. Haptic feedback capability would be nice. Programs seem to run somewhat slower, but that may be eye candy so the “running” display can be displayed for a second or two during program execution. Feels much like the original. Love it.
-- df99, 2020-11-01

### ****- "Maybe add Haptic"
I really like this calculator. It would be nice to have haptic feedback upon key press. This would help knowing that a number is pressed and not double pressed
-- TonyGixxer, 2020-10-08

### ****- "Please add Programs Storage/Retrieval"
This is the best HP 15C emulator. Behaves and feels just like the real one. Anyhow, taking advantage this is an emulator and considering the original 15C could not store/save programs (i.e. you have to retype a full program each time you switch programs)l, PLEASE add programs storage/retrieval capability! This is a must.
-- Scanit0, 2020-08-18

### ***** "Either I use this one or the real 15C"
This app is great works just as expected. I love my HP 15Cs. Started using the 15 see you about 25 years ago. I still have it and often use it. The nice thing about this app is I have my 15 C wherever I go. I’m so glad they created this app
-- Braxton916, 2020-08-10

### ***** "Works for me"
As is the case with many others, I switched because my old 15C emulator stopped working after an iOS upgrade. This one works for me just fine. I’m very grateful to the developer for keeping the 15C alive.
-- Professional SE, 2020-07-09

### ***** "HP 15C"
Works like the original.
-- retired Land Surveyer, 2020-05-17

### ***** "Finally fixed bugs"
Didn’t work for iPhone X.  So annoying.  Finally fixed the bug and working great now.  Thank you for updating.  I was despairing that it would never be fixed after silence for nearly 3 years.
-- Jpark18, 2020-05-15

### ***** "Great HP15C Emulator"
Before you buy this app ensure you do research and understand the features, complexities and limitations of the HP15C.  This emulator is a faithful rendition of the good old vintage HP15C advanced scientific calculator.  Those of us who own or have owned the HP15C will appreciate the convenience of having this on the iPhone as a replacement or backup.  Recommended.
-- RosannaDana, 2020-05-07

### ***** "Five Stars Again"
After the app had stopped to work a while ago due to an iOS update, the developers finally delivered a version that work ms again on the latest release of iOS. This is the 2nd best calculator - the best bring my real HP 15C. If you know how to use the original calculator, you will be able to use this app as well. It behaves just like the real deal. 

To the developers: Please make sure that the app keeps on working through any future operating system updates.
-- WhichNicknameIsNotYetTaken, 2020-05-01

[View all 15C Pro Scientific Calculator reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## 15C Pro Scientific Calculator Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Brazil | Utilities | #112 |
| Top Paid | Ecuador | Utilities | #172 |
| Top Paid | Lebanon | Utilities | #175 |
| Top Paid | Belgium | Utilities | #192 |
| Top Paid | Mexico | Utilities | #196 |
| Top Paid | Spain | Utilities | #200 |
| Top Paid | Colombia | Utilities | #206 |
| Top Paid | Chile | Utilities | #213 |
| Top Paid | Switzerland | Utilities | #224 |
| Top Paid | Austria | Utilities | #231 |
| Top Paid | France | Utilities | #236 |
| Top Paid | Peru | Utilities | #239 |
| Top Paid | Portugal | Utilities | #242 |
| Top Paid | South Africa | Utilities | #290 |
| Top Paid | Italy | Utilities | #324 |
| Top Paid | Argentina | Utilities | #327 |
| Top Paid | Dominican Republic | Utilities | #339 |
| Top Paid | Denmark | Utilities | #349 |
| Top Paid | Indonesia | Utilities | #396 |
| Top Paid | Norway | Utilities | #441 |
| Top Paid | New Zealand | Utilities | #453 |
| Top Paid | Germany | Utilities | #455 |
| Top Paid | Romania | Utilities | #460 |
| Top Paid | Sweden | Utilities | #469 |


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## 15C Pro Scientific Calculator Available In
- [United States](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/united-states)
- [Brazil](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/brazil)
- [Germany](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/germany)
- [Switzerland](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/switzerland)
- [France](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/france)
- [Canada](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/canada)
- [Italy](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/italy)
- [Netherlands](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/netherlands)
- [Belgium](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/belgium)
- [Spain](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/spain)
- [Mexico](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/mexico)
- [United Kingdom](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/united-kingdom)
- [Australia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/australia)
- [Chile](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/chile)
- [Japan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/japan)
- [Sweden](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/sweden)
- [South Africa](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/south-africa)
- [Norway](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/norway)
- [Austria](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/austria)
- [Ecuador](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/ecuador)
- [Argentina](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/argentina)
- [Luxembourg](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/luxembourg)
- [New Zealand](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/new-zealand)
- [Denmark](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/denmark)
- [Slovenia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/slovenia)
- [Israel](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/israel)
- [Paraguay](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/paraguay)
- [Slovakia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/slovakia)
- [Portugal](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/portugal)
- [Croatia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/croatia)
- [China](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/china)
- [Egypt](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/egypt)
- [Philippines](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/philippines)
- [Hong Kong SAR China](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/hong-kong)
- [Malaysia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/malaysia)
- [Finland](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/finland)
- [Vietnam](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/vietnam)
- [Colombia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/colombia)
- [Russia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/russia)
- [Hungary](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/hungary)
- [Türkiye](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/turkey)
- [Taiwan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/taiwan)
- [Ukraine](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/ukraine)
- [Uruguay](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/uruguay)
- [Uzbekistan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/uzbekistan)
- [Senegal](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/senegal)
- [Azerbaijan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/azerbaijan)
- [Bulgaria](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/bulgaria)
- [Bahrain](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/bahrain)
- [Belarus](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/belarus)
- [Cyprus](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/cyprus)
- [Czechia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/czechia)
- [Dominican Republic](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/dominican-republic)
- [Algeria](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/algeria)
- [Estonia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/estonia)
- [Grenada](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/grenada)
- [Ghana](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/ghana)
- [Greece](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/greece)
- [Honduras](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/honduras)
- [Indonesia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/indonesia)
- [Ireland](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/ireland)
- [India](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/india)
- [Iceland](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/iceland)
- [Jamaica](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/jamaica)
- [South Korea](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/south-korea)
- [Kuwait](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/kuwait)
- [Cayman Islands](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/cayman-islands)
- [Kazakhstan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/kazakhstan)
- [Lebanon](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/lebanon)
- [Sri Lanka](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/sri-lanka)
- [Latvia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/latvia)
- [Madagascar](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/madagascar)
- [North Macedonia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/north-macedonia)
- [Nigeria](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/nigeria)
- [Nepal](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/nepal)
- [Oman](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/oman)
- [Peru](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/peru)
- [Pakistan](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/pakistan)
- [Poland](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/poland)
- [Romania](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/romania)
- [Saudi Arabia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/saudi-arabia)
- [Singapore](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/singapore)
- [United Arab Emirates](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/united-arab-emirates)
- [Thailand](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/thailand)
- [Tunisia](https://apptail.io/app/15c-pro-scientific-calculator-nGQc/tunisia)

---

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