Since releasing Pooka Pets a few weeks ago, we have had several reports that the app has been crashing for iTouch 4th Gen users. The problem had to do with the app pushing the limits on memory usage on this older, lower-memory device.
The good news is that we believe we have verified a fix for the problem, which in turn has improved overall performance for all devices. The update with this fix is pending review for the App Store, and it should be ready for download in a few days.
Thank you for your patience while we fix this problem, and thanks for your interest in Pooka Pets!