The mobile application market is growing at a breakneck pace and shows no sign of slowing. Thus, FierceMobileContent is offering a new feature to help make sense of it all: Appealing/Appalling is a weekly feature spotlighting the best and the worst that mobile developers have to offer, from games to navigation tools to augmented reality solutions. This week, Appealing/Appalling looks at a pair of celebrity-themed apps, Sketchbook O and the Golden Voice Soundboard HD, and concludes one is exciting and the other is purely exploitative. Special feature
