If you can get people to use your product, you’ve taken a step in the right direction. But wouldn’t you rather get people to use your product over and over again? In fact, certain types of products like mobile apps and social networks rely on habitual users.
Habitual users are different than returning customers. A returning customer might just patronize your business once in awhile. But a habitual user actually works your product or service into their routine.
from Blogger http://evangelinagius.blogspot.com/2015/01/how-to-get-customers-hooked-on-your.html
Evangelina Gius 