Hmmm, I'm just wondering why you would need a specific ap to navigate a website? Heck likely even if someone did! put the time into developing an ap all it would be would be linked html pages anyway so probably would be pretty much the same as just opening this website in your tablet browser of choice.
Besides, to be honest websites are always easier to navigate on a pc anyway.
If your having trouble yourself, you might want to look at key shortcuts your screen reader has for skipping around webpages, for example you can navigate most things in this forum by heading, (h in most screen readers), you can get straight to the quick reply by going straight to the edit area. On the main website you can skip straight to a game's entry with headings again, or hit c (for go to combo box), to get straight to the dropdown to quickly take you to a game's entry page in the database.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)