Barsys Smart Coaster Review: Not a Reliable Drinking Buddy (www.wired.com)

The motor is able to handle a bit of ice, but you cant fill the mixer to the brim and get any traction.

The problem is that if you dont know how much of an ingredient you need to pour in (and the app doesnt tell you during mixing), you can either find yourself adding ingredients by the dropwhich takes foreveror sloshing in booze and blowing right past the stop notification.

Any ice you do use will need to be added at the beginning (when the empty mixer is initially weighed) or the end, never the middle, as that will throw off the liquid weight measurements.