If you are looking to make money off a mobile app (not establish saas mobile extension) rapidly launch MVPs of your apps to see if there is any demand. Don't invest in perfect designs and ux until you've validated that there is a user base worth investing in.

That advice is how you create shovelware. You can't validate a market if you don't meet the demands of that market, and that means producing something that can compete in a space of well-made and well-designed applications.