Dear Ladies and Gentlemen When I measure the sugar value with the app (iDevice iPhne 8), I am always at least 3 units higher than with conventional finger pricking. higher than with the conventional finger prick, example 7.12.21 with the app 9.4, finger prick 6.3mmpl/L!!!! The difference should not be that big, if at all? Actually, I think measuring with a sensor is a super thing!!! However, at these prices, I expect better accuracy. I never know what value I can rely on. Do you have any tips on what I can do about it? I got the device from my family doctor. I would appreciate a quick response. My email address is: salvatore.quirino@bluewin.ch Postal address: Salvatore Quirino Etzelstrasse 2 CH-8635 Dürnten ZH