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Use App Designer to Create a Simple Calculator App

This app shows how to use numeric edit fields to create a simple mortgage amortization calculator. It includes the following components to collect user input, calculate monthly payments, and plot the principal and interest amounts over time:

  • Numeric edit fields — allow users to enter values for the loan amount, interest rate, and loan period. MATLAB® automatically checks to make sure the values are numeric and within the range specified by the app. A fourth numeric edit field displays the resulting monthly payment amount based on the inputs.

  • Push button — executes a callback function to calculate the monthly payment value.

  • Axes — used to plot the principal and interest amounts versus mortgage installment.

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