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I am using calculator to hide functionality of application, But apple review team is not approving that with the reason 2.3.1 Performance: Accurate Metadata. When I checked app store there is multiple apps available which are using calculator hide data. If app store terms and condition does not allow this, Then why are there so many apps available? Please suggest me the way

I am creating an application using flutter and I want to make it live for a limited number of users who belong to me or my organization, This app is showing calculator UI in front and if the user enters a perfect combination he will get a personal web view. That web view is hidden from the public or friends. Is there any issue if I make this app online on APP Store - like privacy or how can I install this app on limited users or for my friend circle