Does not work with multi-lens iPhones. – Cardiio: Heart Rate Monitor Review

It is very disappointing that you did not update the software to use the lens closest to the flashlight for multi-lens iPhones. It used to work great with my single-lens iPhone (we even purchased the in-app upgrade), but now, with my multi-lens iPhone 11 Pro, the app is useless crap! The light and the lens are too far away from each other to get an accurate measurement! The iPhone 11 Pro was released 1.5 years ago (that's when I bought it)! How much more time do you need to fix the problem ??????)
Review by Nomen Nesci0 on Cardiio: Heart Rate Monitor.