the other issue with bringing in a tech co-founder is can you find one you can work with at that level and get along with personally. You don't want to solve your technical problem only to generate difference of vision issues down the road.

A software development company also brings with it at least two major advantages. !) In many cases they can bring an entire team to build and test your app giving you a range of technical ability which would tend to improve the quality to the end user. 2) They may have existing contacts you can leverage from on the deployment and marketing side that would give you aa leg up there.