Although I’d obviously like to see more functionality added to the iPhone app at no additional cost (who wouldn’t? :) ), realistically I can understand that there really is a disparity and that implementing some of the iPad functionality on the iPhone side makes that a tricky balance.
Personally, I wouldn’t at all mind paying a “Pro” IAP upgrade fee, similar to what’s now been done in the iPad app, in order to enable the additional functionality. Arguably, if the OF for iPhone 6+ enhancements could replicate what’s on the iPad, I’d definitely have less need for the iPad version – which although I’ve repeatedly bought and upgraded, I never end up using as much as I think I will, simply because the iPad is in a distant third place among the devices I most regularly use.
Another way to handle it might be to do an IAP for an iPhone 6+ “Pro” upgrade, but also find a way to give that update for free to those who have purchased the iPad version. Probably trickier due to the way the App Store works (can’t install the iPad version on the iPhone 6+, so I’m not sure how you’d validate the upgrade), but that does seem like it would be the fairest way to do this if you were going to go to an add-on model for the iPhone version.
