Ah, yeah- makes sense since they don't have a version that would work on the iPhone.Umm... it's an iPad only app, so I'm not sure you could purchase it from the iPhone (I could be wrong though).
But I highly doubt the sale goes out after Christmas... due to people gifting iPads, I think Affinity will have their sale all the way up until New Year's (don't quote me on that lol).
I look forward to testing out the app! I originally intended to cough up the $55 for Pixelmator since I knew a bit more about that app, but I am glad to have had this conversation here now about Affinity Photo.