The blog has a graph showing around 1500 paying customers, which is still amazing (nearly $15k / month revenue!). I'm guessing the missing 6000 odd are staying on the free plan.
Sorry, that's misleading (though I do wish :)) There are about 1500 customers in a trial plan that hasn't expired and doesn't require a credit card, so we will only convert some percentage of them to paying customers.
However, we just pushed an update last night that has dramatically increased our conversion rate from free to paid trials. Only time will tell by how much!
I'm surprised the potential here wasn't recognized; seems like a no brainer given the target market (one that's growing ridiculously fast with no signs of slowing down) and the obvious level of quality! Of course what doesn't look like a no brainer with the benefit of hindsight ;) Out of curiosity what change did you make that led to your conversion rate increasing so dramatically? You mentioned something in your post too, but didn't elucidate.
For the free builder we added a feature to immediately upgrade and save your work in progress in your dashboard, instead of just telling you to upgrade, forcing you to decide between losing your work or doing it all over again.
