I want to know if it is possible to check if the app that the user is running is the latest version that is available at Google PlayStore. I have read some answers and they say that this is not possible, but I see some apps that do this.
Can someone tell me how can I do this? I can see that this is possible.
Indeed the Google Play Services do not expose such API.
But you could use a workaround to check for newer versions: a simple request on your serveur could do, parsing the Play Store page could do too etc.