Give a try to https://play.google.com/store/apps/details?id=fr.neamar.kiss -- the same thing, with a clean UI :)
Summon is the new hype!
Replace your home with this blazingly fast search engine to get instant access to your phone data.
Search in your apps and contacts with a few single keystrokes.
Summon learns from your habits and will prioritize your results according to your use.
Plus, it uses nearly no memory from your phone.
You can use Summon as a home replacement (for power users) or as a widget for quick access to apps and contacts.