The Covve Scan app is excellent value for money. I love that I can scan both sides of all the business cards I have (and as a business-to-business service, I collect a lot!), and that it reads the cards and automatically pre-fills the name etc. I found that it wasn't super accurate with fetching the details off the cards, but it was easy enough to correct.
It's already helping me clear the clutter of business cards on my desk, and while I haven't used the search function yet, I'm sure that when I'm looking for someone's contact details, Covve Scan will make finding these details a breeze!