Petal brings your photos to life with an amazing deep interface. Petal shows your photo in a grid of variations. Its like having a table of large prints to choose your favorite from.
Edit your photos on the largest screen, with the highest resolution.
Add filters/adjustments and view them in a stack.
Even better, view the stack in all dimensions.*
*(OK, maybe not all, but at least the three we know of. But seriously, have you ever seen your digital photos blown-up to museum-sized prints, in perfect lighting conditions, and were able to then edit them?)
EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/