How can the network determine whether app, is installed or not?

assume that there is a link in the network address
will send app
to app store when pressed, but if it is installed, you don"t need to open app store
to open app directly.
how can this be realized?
I am now downloading the link to app store on the results
, but after pressing it, even if the app is already installed
, I will still ask you to open app store

.
Android ios web
Apr.09,2021

just use the itunes meta special tag.

Previous: How to add fadeIn effect to lazyload?

Next: For quill editors, the emoji display will change to "?"

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1eaaf10-47dd0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eaaf10-47dd0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?