Under rating threshold (hideshow)
Also, there's an annoying bug where objects that get moved too near the top of the screen get stuck there. Made worse by the lack of a "Reset" button...
Under rating threshold (hideshow)
Level 12 is completable with only one bar. Put it to the direct left of the purple, watch the star fill up, switch to the right of green, let circle fill, star will have slightly decreased, switch back and both should be filled if you did it fast enough.