
I've tried many platforms for CTAs over the years. ConvertFlow provides the most horsepower in terms of design features, backend integration, and customizable actions (e.g., injecting custom javascript upon CTA completion – something many other platforms do not support). Review collected by and hosted on G2.com.
As a UI designer/developer, I would prefer to see ConvertFlow's UI to be built a bit differently. Sometimes I find that I get a little lost in their system. Their workflow (for creating and launching a new CTA) could probably be cleaned up a bit. Review collected by and hosted on G2.com.