Before installing an app you or someone else wrote, you can view the list of app files:
In the Current Folder browser, navigate to the folder to which you downloaded the app.
and select Show Details.
At the bottom of the Current Folder browser, in the Details panel, click the View File List expander .
MATLAB® displays the list of files in the app.
After installing an app you or someone else wrote, you can see the list of app files and the contents of each file:
Click the desktop Apps tab.
Click the down arrow at the end of the Apps section .
Under My Apps, hover over the installed app.
Within the tooltip, click the View File List expander .
MATLAB displays a list of links to the source files.
Click a file link.
The file opens in the MATLAB Editor.
If you modify the files in an app, the app behavior can change.
If you modify files, and then want to revert to the original app,
reinstall the original