@doc, might just be mobile , but I also play on mobile and a 1 year subscription is all that I am offered, no monthly, so it's not across the board to all mobile players.
Both are Mobile, differet featured offers
The 2nd image mentions iTunes in the fine print. Maybe you have to be playing on an iOS device to see that offer.
It does look like a difference between mobile devices. My mobile is iOS and I see the second one with the two options.
I also noted that mobile (iOS) gets a discount!
More mysteries of WGT unlocked - or at least uncovered?