[sebst]

As always: That depends. ;-)

The most important question is: Can you make a sustainable business with you app and will you generate money from it? If this is the case, you could either find an investor (which may be very, very hard at you current stage) or invest some of your savings on your own.

Then, how are you used to work currently? Do you prefer working with others or on your own?

Finding a co-founder is often a good choice for startups because you find like-minded people which (hopefully) share the motivation for the project with you. However, doing something together requires a lot of trust in each other and empathy. If you find yourself comfortable with another guy at your project, go for it, that's the best solution, in my opinion. If you disclose some more details about your idea, I am sure, HN could be a place to start searching.

If you find yourself uncomfortable with that and you're not willing to learn to program, go for oDesk or something similar as some other comments already suggested.