On today's AppAdvice Daily we are checking out a must have download called Hashtack. Formerly known as Divvy, Hashtack is back with a new name, a new look and tons of new functionality. Hashtack is your one stop shop for all your social network photos. View them all in one place, save them, zoom in, share them, and most importantly, create custom streams using hashtags. It's the ultimate social photo experience. Watch today's AppAdvice Daily to see why this free app should be on your must have list.