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15E Scientific Calculator app review: solving anything you throw its way


15E Scientific Calculator

Price: Free

15E Scientific Calculator by Vicinno Soft LLC is ideal for performing quick and accurate calculations while on the go. Not only will you be able to perform basic calculations but this app provides you with full high-end scientific capabilities. The calculator is also programmable, making it all the more attractive for users.

The app was updated on May 31, 2013 and is available in English only.


User Experience
Even though the calculations you’ll be performing on this calculator are intricate and usually confusing the app itself was designed to be very easy to use and understand. This allows you to obtain quick and accurate results each and every time. The app is well equipped to perform numerical integration, support complex numbers, solve the roots of equations, and perform matrix calculations. The app keeps things simple through its navigation system allowing you to use the icons at the bottom of the screen to move through it.


This is not your basic and average calculator app. Instead you're given a fully-featured scientific calculator that is able to perform the most simple equations all the way to the most complex. Some of the operations you can use on here is the random number generator, hyperbolic and inverse hyperbolic trig functions, factorial and percentage change, probability, RPN entry, and as mentioned it is programmable. The app features a menu key to provide you with additional options, there is an automatic save and restore feature, and you can enable or disable the feedback sound.


Update Info
In the most recent update the app made a minor bug fix, which resulted in smoother better overall performance. The most current running version of the app is 1.83.


Customer Ratings and Feedback comments
15E Scientific Calculator currently has 20 customer ratings with an average rating of four and a half out of five stars. With an almost perfect score one expects to hear plenty of glowing comments from users and this app follows through on just that. In general most users found the app very simple to use and liked that it performed so many different types of equations.


Personal Comments by Reviewer
Some users commented on the fact that the app had the same feeling as the retro scientific calculators from the 80's. As someone who used a scientific calculator during that time period I strongly agree. It felt comfortable, simple, and fun to use. I loved that no matter how complicated the equation was the calculator could handle it with ease and speed. The list of features is impressive for a free app and once you start using it you'll find way more features that weren't even listed. I also liked that you could adjust settings such as using the comma as a decimal point, or turning the key click sound on or off.



  • The app performs all kinds of equations both simple and complex
  • You can count on quick and accurate results/solutions
  • The app has a comfortable feel to it, looking like a real scientific calculator
  • This is a high-end full-featured scientific calculator that is also programmable


  • If you don’t need all the features provided it’s easy to feel a bit lost and overwhelmed by all the offerings of this app.
  • Some users find it hard to get used to the RPN calculator as it doesn't have an AC button or an equals key


For: iPhone, iPod touch, and iPad with iOS 4.3 or later. 15E Scientific Calculator is optimized for iPhone 5.

15C Scientific Calculator by Vicinno


15C Scientific Calculator by Vicinno


15C Scientific Calculator by Vicinno

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