Shortly after v1.1 of all four recipe apps went out last week, we received some reports of the apps crashing on iOS 7 devices. This bug turned out to be difficult to reproduce, but we think we finally managed to do so and are now submitting v1.1.1 to the App Store to fix the problem.
Sorry about that.
This will probably be the last software release that supports iOS 7, because it’s just too difficult to QA that many operating system versions for niche products like these. Future releases will require iOS 8 or later.