Moon is a free geometrical, rounded font that is free for personal projects. It comes with thin and bold weight, however it only contains uppercases for alphabets. If you are looking for a good alternative font that is free for commercial use, you might want to check out HERO free font by FontFabric.
Styles: 2 (thin and bold)
Designer: Jack Harvatt
Permission: Free for personal projects only. Contact Jack for commercial license.