So first of all it doesn't come with not even a sample strip. Had to buy them separately. Wasn't impressed at all at the quality and design of a machine which should be quite the opposite considering it being related to health. So anyways app froze while creating an account with the company. Reopening it solved it. I put in the strip, then I tried taking a sample from finger, keeps saying to put in blood which I did, but nothing. Tried several times with several fingers, wasn't fun at all, and few times the syringe instead of going straight into finger it would go sideways making it useless. Still nothing, kept saying to put in blood. Tried reopening app and it detects that the strip is used and to add a new one. But doesn't detect the blood at all. How ironic. Anyways it's a cheap machine that doesn't work and my fingers aren't thankful at all.