Another cool little thing we found in iOS 7. When you are using the timer feature, you can actually see it in the Lockscreen. This is very useful for those of us who exercise. Sometimes I will use my iPhone timer, but the screen will turn off. Rather than having to go back to the app and unlock my phone, or do any of that jazz, I can just see the timer on the Lockscreen. This is very cool.
You don’t have to do anything. Just use the timer as you normally would. When the iPhone goes back to the Lockscreen, you just glance at it as you need it.