LeadsBridge was featured as an AppSumo deal in early 2017. They offered  lifetime access to the LeadsBridge Hero subscription plan for 49$/yr, which was almost a 90% discount.

They shared more about their experience at Why You Want To Be Featured On AppSumo (Even if It’s Risky). The article didn’t go into much detail about the stats, however their customer acquisition growth rate per month increased by +165%.