Check if an application is installed or not in no jailbreak iOS device -

this question has answer here:

• how check programmatically if app installed? 4 answers

there're duplicated questions somewhere don't inform device no jailbreak.

in there way check application installed or not?

you can use library applist list of installed apps , packages, available free on cydia (source on github: https://github.com/rpetrich/applist). can query apps/packages bundle id. there's example in github repo, or here's related answer on so: https://stackoverflow.com/a/10328585/381233.

(i think op correct there not being questions asked here already, 2 questions listed in comments don't mention jailbreak.)