Typically when one invests the kind of money this product cost, there is the expectation of saving time and that the product is accurate. This isn’t either if those. I was aware of the negative reviews, but more often than not, I have found those reviews to be based in user error. As to the app, its clunky and glitchy, much room for improvement. As for the formula pro, each of the tests I ran to test for accuracy involved having the machine dispense only water were off by more than 25%. This would have resulted in the formula being too watery. Folks, you’re formula mix cannot be off by this much. The machine will be returned. Please save your money. This just isn’t worth it.