TwMobile. Regarding TiddlyWiki - yes, there is also an app for iOS devices. By the way, it uses Phonegap to create the app. The link at the beginning goes to the user group, but here is also a link directly to the AppStore. Quite interesting because in TiddlyWiki, plugins and similar things are also automatically possible in JavaScript and thus extended access to iPhone hardware becomes possible. At the moment, the integration with Dropbox is still a bit meager: you have to send files back and forth between apps. But since in TiddlyWiki everything is in one HTML file, that's not such a big problem. Enables the same interface for a small desktop wiki on iPad, iPhone, and desktop. And one that also looks quite nice. And additionally enables onboard programming in JavaScript. Sounds like a nice toy!