Coming from Philly, where bubble tea can be found pretty much anywhere (I can probably name at least 10 places off the top of my head), the lack of bubble tea shops in Pittsburgh was a bit disappointing when I first moved here. Luckily, I've discovered Insani Tea to feed my cravings. They have a fairly large variety of flavors to choose from and also various topping flavors as well. When I lived in Philly, my all time favorite/go-to drink is the peach black tea with tapioca and Insani Tea definitely got the taste on point.
The owners are also very nice people. The only con that I have is that they do take quite a bit of time to make the drinks. But I'm sure that it's because they want to make it taste just right (and also there's only two of them working). Despite the wait time, this is a great place to get your bubble tea fix.