Stay away from this product until it and the company mature.
I have used SleepTrak for two weeks and I find it almost useless because A) there is no manual for the card & app despite what the website says (and links to a supposed PDF do not work), B) given what the videos on YouTube promote, I am missing some functionality in the app (Emailing results? Email button does NOTHING.) along with sketchy NFC connections and, worst of all, C) absolutely no support, tech or otherwise. I have tried their "Contact Us" but the website simply takes my contact information without any opportunity to comment. I have guessed at a support email address (support@impakhealth.com) and it has not bounced back nor has it been answered. Obviously this product has been pushed to market too quickly. iMPak Health, I hope you see this! All very suspicious.
Rating: 2 stars