I am doing similar thing, I quit my job in Oct 2011 and making iPhone apps. Made 4 apps so far but just earning $10/day from it. But its a lot of fun and exciting than a job.
In the same boat as you, quit my job around the same time you did (august of 2011), built an iPhone app and have some affiliate marketing. Turned over a bit more then 10 bucks a day (average about $70) but still in the ball park of can do much better :)
And yes it is fun ! i guess we just gotta keep going
Nice -- my email is in my profile if you're up for some sort of occasional peer support