On the clock animation

I spent last night looking further into the interactions for the client manager app. Here you can see how the user reveals the clock to keep track of the time spent on a project.

- Pause button will freeze the clock
- Stop button will add the time completed to a time sheet

To make it obvious that the clock is running a shortcut to the pause and stop button appear on the list screen.

Would love to know what you think to this and any feedback/ ideas would be much appreciated!

Many thanks!