Full contact is an excellent business card reader, and I really like the Salesforce integration feature.

Syncing all my services together is great and I use Zapier to also push work contacts to our shared work Google Contacts account. BUT the killer feature is the business card scanning app for me. I've tried so many in the past but this is the only one that actually works. And its 100% accurate in my experience. This really takes a pain away for me and this alone is worth the monthly fee.

Profiles, iOS contacts integration, perfect design, tags, relations, ability to merge contacts — yay! I compared all the contact apps I could find, and FullContact was the best of them.