App Store Style Progress Button
Update
We had a lot of positive response from this component, so we decided to open source it! Check out the project on github, and let me know if you use it!
I was recently inspired by Apple’s progress buttons in the app store, so I decided to create my own to use within Guidebook. This is a screen recording of the actual button running in the app (not a prototype).

Guidebook's new app store style progress button.
Let me know what you think on Twitter!