i'm react native developer with 3 years hard work developing the application that you can see in app store and google play with +500k download
https://play.google.com/store/apps/details?id=com.o2fitt
https://apps.apple.com/us/app/o2fit-diet-calorie-counter/id1556681170
the best performance application and too many formula for calorie counting hard work with 3 languages support