I do not like the pricing or the sales techniques. I had to really negotiate hard to get them to agree to let me pay quarterly.
I love the user interface of Mixpanel.
Motion and Sketch for creating ads.
Appsflyer for attribution and measurement of Facebook ad performance.
RevenueCat for logging revenue data to Appsflyer and Facebook.
It's insanely powerful. The keyboard shortcuts let you go through your email WAY faster than gmail.
I love the simplicity of it. It's pretty and has great apps for Mac, iPhone, iPad. The syncing is perfect as well.