Squirai: Promotion Popup

It's a good simple, basic popup app, but it's very clunky to customize the ads, unless you are a coder. Just trying to add a button or change the position of the font is not an easy task and sometimes ends up in erasing the button altogether, with no way to replace the button. A drag-and-drop feature for customization would be much appreciated, but I understand this is a free app, so it will have its flaws. I may have to think about paying for a popup app that makes customizing popups much easier. So, if you are looking for an advanced popup app, this is not the one to choose.