Had wanted an Ember for quite some time, but never bit the bullet because I figured my insulated travel mug was more than enough. Recently received the basic mug as a gift, and I really love it. Is the idea of an app with a bluetooth connection a little silly? Sure. I would've been perfectly happy with a little knob to control the temperature and not needing an app. But it's remarkably pleasant to have your coffee on your desk all morning at just the right temperature. Not too hot, never too cold. Perfect for anyone who finds themselves back in the office, or in back to back meetings when their coffee otherwise would've gotten cold.