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.

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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-64f5-1b36a90-e57f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b36a90-e57f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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