Not as good as Berry Chill.
Red Mango is the Subway of sandwich shops...many locations, but tastes just kind of blah. If you need a frozen yogurt fix and cannot find a better option, like Berry Chill or 40 Carrots, I suppose this will do.
Neither the yogurt nor the toppings are as good though, so don't get your hopes up. Red Mango just tastes rather synthetic and service is usually pretty lax as well.