The key differences between this control and the previously mentioned pie menu control are that this menu expands from a button in a similar style to the animated curved menu control, but in addition the developer has set up a “blooming” animation for a very nice effect.
Here’s a video demonstrating the control in action:
You can download the iOS control, AURosetteView from Emil on Github here with usage instructions.
A very nice animation effect – and as you can see the control was created for social sharing and includes icon for Twitter, Facebook, and e-mail. You will need to do some adaptation for other uses.