Factor2

Created a new icon for the 2 factor authentication app I use: Factor2. When I first downloaded the app, I loved it. It had a nice simple iOS 7 design, worked perfectly, but the icon design was... woeful. I got in touch with it's developer and offered to design a new icon, and he accepted.

The version using this icon is now out on the app store, and you really should choose it over whatever other app you use (I get no commission or anything from it, it really just is the best).