This is demo app, and does nothing by itself. Source code of this app is on codecanyon. This app was made in purpose that if you have your WordPress site, you can have the Android app too. This app is gallery with all original size images from WordPress site. As you know, WordPress automatically resize images, but this app are filtering those images and show only original.
This application is completely safe to download. CS Form is the creator of the app which is included in the Photography category. Users rated WordPress Gallery Module Demo 4.4 on Google Play.