Update: Beta 0.3: You can now browse the full FF7 dialogue text.
Coming Soon: Beta 0.4: You should also be able to browse the full FF7 non-dialogue text. Also, after clicking on a Japanese character in the hiragana, katakana, or kanji page, on the "search results" page, for each dialogue result I'll add a link back to the full dialogue script for that chapter, which should provide better context.
Also I've started playing FF7 International again and capturing screenshots, so I'll probably start adding interesting images to this app as well.