Have you heard of Spork or Foodspotting? These are both apps that help people find delicious food, but only one survived. What’s the difference between Flickr and Instagram? These are both photo-editing and photo-sharing apps, but one is far more profitable.
The reality of the mobile universe is that truly unique ideas are hard to come by (there’s likely already an app for that). Today, success is less about how creative your app is, and more about how many people get value from it.