15C Pro Scientific Calculator

Name: 15C Pro Scientific Calculator
Price: 5.99 USD
Rating: 3.8 (280 reviews)
Author: Vicinno Soft LLC

By: Vicinno Soft LLC

HP 15C emulator

Features & Capabilities

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

User Growth & Download Statistics

App

By:

Vicinno Soft LLC

Rating:

3.80

(280)

Version:

2.3 Last updated: 2020-04-16

Version code:

835560200

Creation date:

2011-02-26

Compatible devices:

Size:

10.49MB

Price:

5.99

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 107,985 ▼ 58

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Vicinno Soft LLC

Apple Apps Store

https://apps.apple.com/us/app/15c-pro-scientific-calculator/id421102285

User Reviews

Overall, users praise 15C Pro for its faithful HP 15C emulation, accurate calculations, RPN support, portability, and good value with solid documentation and state persistence. It’s a convenient replacement that keeps programs across restarts and reinvigorates familiar workflows. However, multiple reviews note stability issues after iOS updates, device-specific problems, and portrait/orientation UI bugs, plus occasional slowdown in operation. When it runs smoothly, it’s regarded as a practical, reliable calculator companion; ongoing maintenance and updates are essential to keep it usable across newer iOS versions.

Pros

Faithful HP 15C emulation with accurate calculations, Reverse Polish Notation, and programmable features.
Highly portable on iPhone/iPad—always with you for quick engineering calculations.
Strong state persistence: saves programs and registers across stops and reboots.
Affordable with comprehensive help/manual included.
Active maintenance and updates that keep it working across iOS versions.

Cons

Stability and compatibility issues after iOS updates, including crashes or non-functionality on some versions.
Orientation/portrait-mode display bugs and rotation problems, sometimes locking up or showing half a calculator.
Performance can be slower than the original calculator and slower during program execution.

Recent reviews

Slower than 1987 real calculator, how possible

by De*****, 2025-07-31

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.

by Ni*****, 2024-10-18

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.