I bought the year virsion of this app believing it was good and giving me correct up to date information.I’ve had it for around 3 weeks now and soon started to realise that it just works from your time on your phone depending on the feed back it gives you.I work night shifts 6 days a month, I do 6pm to 6am and I tend to take my pulse as I get home at about 6.45am and low and behold it tells me I’m full of energy and my stress is low….it seems to think I’ve just woke up from a good nights sleep so tells me this absolutely incorrect feedback as I know this is not the case and I know I’m just about awake and stressed from the nights work.There are better apps out there and I certainly won’t be renewing my annual subscription to this app.And after a couple of weeks, the information you get just gets very boring and repetitive.
Hello! Thank you for taking the time to leave us a review. Kindly note that our app is based on contact photoplethysmography. You may find this information in the FAQ section of the application. The algorithm detects variations of light absorption caused by arterial blood-volume pulsations. Just drop us an email at support@aiby.com if you require any assistance. We will be happy to help you.