Good app, but really? premium?

I dont use this much, only when I send and receive stuff through mail, but its nice, simple and not complex at all. It asks to switch carriers if its an international parcel which I like a lot. But premium just takes away the fact that I cant get notifications about parcel tracking updates which wouldve been really helpful for me in the long run.

phen0menal about Parcel - Delivery Tracking, v2.1