I like that I can take pictures of the back of cards (A surprisingly large amount of business card apps dont)
Id give 5 stars, but I dont like being forced to use ABBYY Cloud for synchronization. I would like to see alternative options like Dropbox/Google Drive. At the very least, iCloud sync.
Other than that, it gets the job done.
TheFinalWolf about ABBYY Business Card Reader Pro, v8.3