This app was mentioned in 3 comments, with an average of 1.00 upvote
Here's the lite version of that app that you can use to test your IPTV sub to see if they support Stalker Middleware 5.x:
https://play.google.com/store/apps/details?id=com.infomir.stalkertvlite&hl=en
Do you support the stalker app on android? https://play.google.com/store/apps/details?id=com.infomir.stalkertvlite
Here's the link for the app to test your providers: https://play.google.com/store/apps/details?id=com.infomir.stalkertvlite&hl=en