A singularly-minded iPhone application that does one thing well, One Tap Dial is my life preserver in a sea of generic, boring and sometimes expensive speed dial applications.

Picture dialing for your contacts, with the ability to phone, message or send an email.

Although its user interface is a bit quirky, ABContacts continues to evolve. The current version works well and provides a relatively streamlined experience. It provides far more functionality than the Contacts app built into the iPhone, and is definitely worth considering.