Today’s featured promo on MacUpdate offers GroBoto for US$39.99 (49% off, retail $79). “GroBoto makes creating in three dimensions exciting and enjoyable. It’s fast and intuitive. You will create in minutes and see your results in seconds — if not sooner. GroBoto started life as kids software — with the understanding that the creative kid in each of us still wants to have fun. We still offer free flowing, intuitive, instantly satisfying creativity. Now the same fluid tools work in true 3D, producing professional results.” GroBoto requires Mac OS X 10.4 or later.