Blue Donut by Just So FREE

Blue Donut comes from Just So.  It came up in the search of new puzzles on the app store.  

The object is to rotate and swivel up/down/around the gold figure in order to release the blue rings.

I solved 30 levels in about 10 minutes.  As a puzzle: this is for kids. But in terms of design and programming, it's elegant.

Deleting it now.
https://apps.apple.com/us/app/blue-donut/id1471914434