Develop computer based mathematical calculation application

I have a specific type of calculator I need. It is simple and only does one type of calculation but in multiples simultaneously.

It provides a vertical column on the left which the user may interact with, as the user inputs new numbers into that column, the calculator will automatically subtract the number the user inputs with the previous number above it and provides its solution within the column to the right, making a pyramid. With each new input, the number of calculations increases, thus increasing the pyramid depending on the numbers involved in the calculation.

For example, the user inserts the first input, 1 [press enter] then the next input 4 [press enter] the calculator subtracts these and provides the solution : 3 but still allows the user to continue further inputs which grows the result.

Example 1a:


> 3


Example 1b:


> 3

4 > 2

> 5


Example 1c:


> 3

4 > 2

> 5 > 0

9 > 2

> 7


Example 1d:


> 3

4 > 2

> 5 > 0

9 > 2

> 7 > 0

16 > 2

> 9


Example 2a:


> 3265920

3,628,800 > 33,022,080

> 36,288,000



1) There must be a clear or erase function, that allows the user to start over.

2) There must not be a limit to how many numbers the user can input, thereby increasing the length of the column as necessary.

3) There must not be a limit to how many digits accepted. The user should be able to input as many digits as he/she wishes to add to the calculation, thereby increasing the width of the column as necessary.

3) There should not be a limit to how many columns the pyramid will grow.

4) there must be a scroll function that allows the user to scroll to the right/left to view all the columns' results and likewise up and down.

5) the user should simply be able to press enter after each input to automatically make the aforementioned calculations and further allow the user to enter a new number and continue freely as many times as the user wishes.

Skills: App Designer, App Developer, Software Architecture, Statistical Analysis, Windows Desktop

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About the Employer:
( 0 reviews ) United States

Project ID: #15346416

25 freelancers are bidding on average $241 for this job


Hello? How are you? Relevant Skills and Experience I am good in Proposed Milestones $155 USD - 1

$155 USD in 3 days
(52 Reviews)

Hi, I have read the entire description. I can make this application within a few days. Please message me to discuss more. Relevant Skills and Experience over 10 years of computer programming experience experience in c More

$250 USD in 3 days
(54 Reviews)

Dear Sir, I'm writing in response to your task post. As Senior Level software Engineer with more than nine years of experience in C++,C# I would bring a high quality and focused mindset to this job. Relevant Skills an More

$200 USD in 3 days
(12 Reviews)

I would like to offer my services to build your calculator application. I am an experienced software developer. My professional work is in creating database applications for Windows. I earned my degree in applied mat More

$222 USD in 4 days
(8 Reviews)

Hello, how are you? I have read the details provided, but please contact me so that we can discuss more on the project. I don't outsource like most people do ensuring quality work on time Relevant Skills and Experien More

$210 USD in 3 days
(12 Reviews)

Hi there, I’d like to be considered for your job position. I’m a Software Developer. I aim to form a long-term working relationship. I am looking to build my profile so I can offer a lower rate. Relevant Skills and More

$155 USD in 3 days
(3 Reviews)

Dear client, I can develop such software for you using Java or C++ whichever you prefer. You will need to pay only if it meets all the requirements. Looking forward, Relevant Skills and Experience Java, C++ Proposed More

$166 USD in 5 days
(4 Reviews)

I can do it with good UI as you described in 1 day Relevant Skills and Experience C, C++, C#, WPF, .NET Proposed Milestones $166 USD - Implementation

$166 USD in 1 day
(4 Reviews)

Hi, sir. I 'm a embedded and PC programming expert. I had implemented many Calculation projects on PC and embedded. I'm sure I can satisfy your all needs. Relevant Skills and Experience I have a lot of experiences in More

$155 USD in 3 days
(2 Reviews)

hello, I can provide you application, were you can enter no. of row and values to it then it will calculate and keep making a pyramid of it.

$177 USD in 5 days
(4 Reviews)

ill make a app which which will include 3 parts. a list of inputted values a box to include more values and a grid to draw your statistics, as a bonus ill allow that to be exported to excel. Relevant Skills an More

$50 USD in 3 days
(2 Reviews)

I have read all the requirements for the project. I can make this calculator for you. I am a software engineer. I am a hard working person with a vision that my customers are satisfied.

$100 USD in 2 days
(4 Reviews)

Hi there, Thanks for sharing details, I can assist you in developing the required calculator. I have gone through the pyramid structure and can do it. Please message me back so that we can discuss details. Thank yo More

$150 USD in 3 days
(1 Review)

I would be developing a windows application using winform. The requirement is fairly clear to me. Relevant Skills and Experience .NET,C#,WinForm. Proposed Milestones $70 USD - Upon UI, Development and testing, bug fi More

$138 USD in 3 days
(1 Review)

A proposal has not yet been provided

$100 USD in 10 days
(4 Reviews)

Hello there, I am interested and ready to start, lets discuss with details. Relevant Skills and Experience Strong 8+ year experience in web design/development and 5+ year experience in mobile design/development (mob More

$1333 USD in 15 days
(0 Reviews)

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$111 USD in 5 days
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$55 USD in 1 day
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I would like to take up this project.

$55 USD in 6 days
(0 Reviews)

I have experience coding mathematical algorithms in different languages.

$120 USD in 2 days
(0 Reviews)