I carefully researched all CGMs on the market. I concluded that Signos is the BEST one available, and I was right! The CGM itself works as it should, the app is better than expected, and the customer service is outstanding. The Signos app even coordinates well with iPhone's Health app. Both my husband and I have used it for 3 months and LOVE it. With Signos, we are losing weight. I have recommended it to my familiy members. What a gift it is to see what is happening to my body in response to food intake -- truley educational! This CGM is the missing component to my previous attempts at losing weight. With Signos, we are finally winning!