Hackerbuddy pairs you up with fellow coders, designers & beta-testers to give friendly, free advice via email.
It's a reasonably small community with over 7,000 members who have a broad range of skills, ranging from security testing and app development all the way to logo and landing page design. There's also a lot of people who are willing to beta test products.
Interestingly, it's also a recursive app, in that Hackerbuddy uses Hackerbuddy to build Hackerbuddy.
With v2, I completely rewrote the app from the ground up and significantly improved functionality and UI.
The initial launch of Hackerbuddy, which was covered by Mashable.