I have used many "similar" types of products, but Nudgify beats them all. It's in a class by itself. It's very polished, has tons of integrations and options, and is super flexible. It also has some some unique features, including the ability to create sequential nudges. That allows you to customize the messaging and guide your visitors using psychology and best practices. This deal has a very generous limits that will work great for 99.9% of Appsumo users. It's a big plus that they only count unique visitors, and not simply page views or more restrictive metrics like some of the others do. If you want to boost your conversions and be more competitive, this is a very good tool with lots and lots of possibilities. Definitely recommended.