Hi,
We are planning to develop webApps using ArcGIS Online/Portal and publishing in different browsers/mobile devices. In this regard, We segregate as two modules.
Module No: 1
Use the Templates which is available in ArcGIS Online and publish the apps.
Module No 2:
Create/Customize the Themes/Apps according to user requirements. We downloaded webAPP builder assuming, WebAppBuilder will be an IDE to Create an application using Themes creation/Customization and Javascript[DOJO/ESRI] can be added.
The newly created apps can be uploaded to ArcGIS Online/Portal accounts. As well as We can download the existing templates from the ArcGIS Online account, modified according to needs and reupload to ArcGIS online account.
Query:
We want to know Module No 2 approach is possible or not?