Chartjs-Chart.js don't work when I open my app as a stand alone app in Chrome

You’ll need to look in the developer tools console to see if your getting any errors in your app. A fairly likely culprit is that you are including scripts within your html page. Chrome apps require that all scripts are external to your html and referenced using something like

<script src="path/to/your/script.js">

You’ll have to do some DOM manipulation in your script file to add the charts to your page.