I start off with a list of features, then pen and paper. Then I start building out the app in pure html without any style. Really, planning out apps never real

I start off with a list of features, then pen and paper. Then I start building out the app in pure html without any style. Really, planning out apps never really works. Once you start actually building and using the app you'll realize how different it is from the initial vision. TL;DR: I plan out my app by building it out.