Check App is installed or not in Android by using kotlin.
Creating kotlin extension.
fun PackageManager.isAppInstalled(packageName: String): Boolean = try {
getApplicationInfo(packageName, PackageManager.GET_META_DATA)
true
} catch (e: Exception) {
false
}
Now, can check if app is install or not
if (packageManager.isAppInstalled("AppPackageName")) {
// App is installed
}else{
// App is not installed
}