Planning to submit
a new version to Apple by this weekend with the reviews browser once
again functional. Unfortunately I am super busy right now so my plan is
to just graft these fixes I've been testing onto the previous
release version, leaving everything else pretty much identical. I want
to do some bigger changes and bug fixes, but that release will require
iOS 6 or higher and will probably come alongside the version I'll build
with iOS 7 support.
For now I'd recommend bookmarking
wanikani.com/review to your home screen for easy access, and use the app
for notifications and stats as Zach suggested.