My first one did not work. Called customer support and they were very helpful and after determining it really was broken, they replaced it without charge or hassle. The new one works great. I have been enjoying seeing my results and having proof that I am in Ketosis. and watching my blood sugar lower.
Very nice to know that I am in Ketosis. My strips stop working but my mojo help me stay on track. Customer service and website are also awesome. I go to the site to read articles and understand my mojo. Also like the YouTube how-tos.