When I hear that "it only took me x time", I typically wonder how much of the work is original ingenuity compared to successfully 'gluing' an app together with pre-made libraries. It's more impressive to me when you say "Look at this desk I built in two weeks from trees in my backyard" than "Look at this IKEA desk I assembled in 4 hours" if you'll pardon the crude analogy.

To be fair, both can be equally impressive, and there is no reason to reinvent the wheel unless you can make it better.