I like the mug.  The app however is not good.  I've had a standard Ember mug for 2 years and the travel mug for 3 months.  If you look at the reviews for the app you will see that most rate it as a "1".  Don't expect to be able to use it much as it will lose contact with your mug and then will be unable to find it again.  I don't understand how this company can continue to ignore this problem.