It's not here in the US either. Perhaps they got rid of it. It looked like a good app and Nunn even showed how to use it when doing a book review.
Chess Viewer (Everyman Chess E-Book App)

Thanks for your feedback, EFAKC. I emailed Everyman, and they sent me links to download PDFs/ePubs of the books I had purchased. They said they're working on an update to the app, but there's no ETA.

Yes, they seem to be an honest bunch of people, who I am sure will deal in the same way with other customers with similar problems. It would be great, though, if they could be a bit more proactive about announcing changes with the apps and how they will affect people. The main attraction for me about books bought through the app was that they are real chess e-books with a board embedded inside the book.
Hi everyone,
Is anyone familiar with this app? I downloaded it a couple of years ago and bought a few books through their store to read on it. I've been having problems with the app, so, as is often recommended, I uninstalled it, with a view to redownloading it. It was then that I discovered the app had disappeared from the iOS store (in Japan, where I am based). Any ideas for how I can reobtain the books I have purchased?