Hmmh, on its own its not enough, I think. Just read through the post, and there is no trial of expensive features in their setup, just a set of free features to

Hmmh, on its own its not enough, I think. Just read through the post, and there is no trial of expensive features in their setup, just a set of free features to begin with. But it seems that Apple allows these days to trial features, as long as your app remains usable and useful without them.