How is Trello iPhone app developed?

frameworks, ios, native-code, trello, web-applications

Solution

I'm on the Trello team and wrote the iPhone app. It's all native code except for the attachment viewer, which is just a WebView. We use RestKit to communicate with our API and help cache the data locally to CoreData. Otherwise, it's just a bunch of custom UIViews and UIViewControllers.

Problem

I was wondering which libraries or frameworks Trello iphone app is using. Is it a webapp with JS framework? if yes, which one? Or is it native? which frameworks for this here? I'm curious because I really like the UI, and has searched the internet without luck.

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