I am using this product for about 1 month now and below is my feedback.
Likes: 1. very simple to use. 2. readings are accurate. 3. two users memory 4. maintain history in your mobile for future references.
Dislikes: 1. instructions aren't written nicely. Setting it up with phone took me a day almost. 2. not working with android but now working with iPhone. 3. i don't like the mobile application. It's complex to use.