I’ve just added some updates to the iPokédex today, inspired (as was the iPokédex) itself by questions my son asked that I couldn’t answer.
The search page now offers a “special evolution conditions” dropdown menu, allowing you to see at a glance all of the various special evolution conditions that exist and, with a click, get a list of the Pokémon affected. (So now he knows which Pokémon evolve with Thunderstone.)
I also added a link to a handy battle chart on the “sources” page, although I would like to add a direct capability to select a type (or click the type on the Pokémon’s detail page) and instantly see all of the details about that type’s strengths and weaknesses. That’ll be version 1.3.