After opening the app, the countdown runs fine however it doesn't clear what it just set the text to. The countdown lets say starts as 01:06:54 then it will display 01:06:53 on top of that then 01:06:52 on top of that etc etc This is the result: <img width="116" alt="screen shot 2017-02-16 at 18 11 15" src="https://cloud.githubusercontent.com/assets/15057423/23034313/557cc2c0-f473-11e6-959e-c458224a2aef.png">