We do not (currently) manage pricing and plans for you, so that's a plus for UserApp.
We are more focused on user management, oauth simplification (FB, Twitter), auth, and user analytics.
We're also VC backed (Google Ventures) and are storing millions of accounts. Because we have a few larger clients bringing in real revenue, we're not going anywhere anytime soon.
Some unsolicited advice for UserApp:
* You need to address lock-in. It's the first thing everyone asks us. We designed our platform for zero lock-in and account portability for this very reason.
* This space can be a hard sale. People are reticent to store their user data in the cloud. (As they should be!) Compare that to the next social/mobile app that people will try on a whim. That's the bad news, but the good news is once you've "wowed" a customer, they will likely be a customer for a very long time -- even if you make export easy.
