What I would like to read is why the OP put his time into building a task app. Not because the world doesn't need another one (I'm not being sarcastic here...)...but if you don't have much talent or time for marketing, then something must have been guiding you, right? I would think that without any other external guidance, it's the programmer himself who finds the product useful and uses it everyday as he develops it.
So, did the OP find his own product useful?