I've been using OptInMonster for several years and have been searching for a more cost-effective alternative due to its high price with increasing page views. After trying numerous options, I finally found Poper, and it has exceeded my expectations. Poper offers all the functionalities of OptInMonster but is much easier to use. It even includes advanced features, such as configuring popups based on specific cookie settings, which is rare among similar tools. Poper has been one of the best purchases I've made on AppSumo, and I highly recommend checking it out.