As with most of our customers, this did not work as expected. The instructions are awful (in the box and here on Revain) and the software provided for this cannot be found on the Google Play Store. I'm working with a Samsung S10+ and every software I've tried with it doesn't find the sensors. Then I asked my daughter to try the iPhone here and no luck there either. At least for the iPhone, the software can be found on their website, but the sensors are not recognized by the app. The last bit of money I will spend on solving this problem is replacing the batteries in the devices. If that doesn't help, then they sent me broken units and I want my money back! All in all it was an unnecessary headache!