OK, you've got an hour before your big date. You need to look fabulous: what do you do? Download Beauty Mark ($3). You can pick your occasion (glamorous, natural). Then pick your skin tone (fair to deep) to see a model wearing the looks. You can mix and match eye makeup and lipstick options on the model until you find the right combination. Finally, you can get video tutorials and product recommendations instantly. It's like YouTube but condensed.