This add-on for Concrete5 5.7, is quite simple to configure and use on your pages. All you have to do is install this add-on, upload two pictures (before and after picture of exactly the same size in pixels) and insert the block on your page. There are few options, and should be quite simple.
Supports mobile devices
This add-on fully supports the use of touch screens, such as smartphones, tablets and other touchscreens.
We have made a little video (see it here):