We graduated from YCSS this Spring. What I personally like is a sobering look at your own progress and video lectures.
Before Adapty we've developed a top-10 educational app in App Store and we felt all pain of mobile in-app subscriptions and marketing that's why we started developing Adapty internally — service for growing mobile apps with subscriptions.
Now we decided to make it a standalone product. What we needed most and implemented in Adapty:
* unit economics calculator
* A/B tests for paywalls
* promo campaigns in push notifications
We believe b2b can be sexy and we make the product just like a b2c.