5 stars: A indeed great way to figure out if the oxygen level is good. THANKS
5 stars: This is very nice app in this covid situation.I and my all family members check their oxygen level in body five tobdix time in a day at home... thanks developer...
5 stars: It is a very useful app at this time of covid and helps to check our oxygen level
5 stars: Good app it provide only beief idea about lung s breath holding capacity.
3 stars: Easy fast cost effective at home
5 stars: Function is simple and effect was very good in this app
5 stars: It is a good appliction n easy to use besides one can strength his lung capcity.
5 stars: I felt good while getting my lungs checked by the app and felt much better after the completion.
3 stars: This is a very useful apps in covid19 case check oxygen level thanks
5 stars: FANTASTIC MARVELOUS VERY VERY USEFUL IF YOU PROVIDE THE SACHUATION IN NUMBERS IT'S MORE USEFUL FOR THE PRESENT SITCHUATION I HOPE YOU WILL FULFILL THIS
5 stars: Most useful App in the covid pandemic to check oxygen levels
5 stars: easy to check .
5 stars: Very good work for testing lung working capacity
4 stars: This is good but not exact so i give 4 star
4 stars: Nice app ,very helpful during pandemic....thanks
5 stars: Good exercise app for lungs. Thank u
5 stars: Very good to check oxygen level
4 stars: I'm satisfied with this app. I's too good.
5 stars: It's good to judge oxygen level in human body.