Agile Tortoise, makers of Drafts app for iOS, just released a new contact manager. I've been on the beta for a while and I'll be honest, it took me some time to appreciate what it does.
The revelation for me was to think of Interact more as an extension than an app. If you've ever used a natural language calendar to create appointments, Interact is like that for contacts. Just send some text with contact data into Interact and it does all the parsing for you.
If you want to explicitly add some information it's also super easy in Interact. Just select the text and then assign it to a contact field.
Interact is $5 right now and I think it's nice.
Get the Drafts actions for added awesomeness.