For Windows Phone 8.1 development we have this nice tool - Windows Phone Power Tools - which allows you to look into app's actual local storage content and get/put files from/to there:
I wonder is there is anything like this for Windows 8.1 / Windows 10 universal apps development?
Or, may be, there is some simple way to get files from the Windows 8.1 app (apart from writing the code to read the file content and, say, "sharing it out" from there via email or something)?
I've also tried to look into c:\Program Files\WindowsApps\
folder, but have not found my development app's sub-folder over there.