I don't know why, and the third party apps (at least the Android ones) have a track record of shady doings (revoking upgrades, creating new "premium" editions a

I don't know why, and the third party apps (at least the Android ones) have a track record of shady doings (revoking upgrades, creating new "premium" editions atop existing ones to force repayment, etc) I always figured it was due to the site being simple enough to make work well on mobile.