Yeah, there's dozens of ways, all do it differently.
That's why there is no official plug.
I would suggest studying different apps and find an example that you want to replicate.
You can then ask the forum what the best way to do that is.
Oh ok. Can you suggest any tutorial? I tried the Inertia tutorial or something, but, only horizontal works and not verticals. I tried to playing around with the event but still no result. Anddddd... if Scirra team does an official plugin, no one will do differently because... obviously... it's official. So, just one line of event sheet is enough. And for me, scrolling is a crucial part of smartphones apps/games.