Default iOS apps url schemes calls… | Apple Developer Forums

Default iOS apps url schemes calls problem

I'm trying to check which default apps are installed on users phone.
I add to LSApplicationQueriesSchemes array strings with apps schemes names (for example "calc" for calculator), then I use this function to check:
func isAppInstalled(_ appName:String) -> Bool{

Code Block     let appScheme = "\(appName)://app"
    let appUrl = URL(string: appScheme)
    if UIApplication.shared.canOpenURL(appUrl! as URL){
        return true
    } else {
        return false
    }
}

Code Block
let appScheme = "\(appName)://app"
let appUrl = URL(string: appScheme)


if UIApplication.shared.canOpenURL(appUrl! as URL){
return true
} else {
return false
}
}

and use it like

Code Block let result = isAppInstalled("calc")

Code Block
let result = isAppInstalled("calc")

but receive this error in console

canOpenURL: failed for URL: "calc://app" - error: "The operation couldn’t be completed. (OSStatus error -10814.)"

which mean app is not installed.

This code work for appstore app, books, apple tv, facetime, messages etc but not working with calculator, time app, compass, contacts, tips.

What is wrong with my code? Or maybe Apple changed this apps schemes? Tested on iOS 14 device.