The ArchiMate® modelling language is an open and independent Enterprise Architecture standard that supports the description, analysis and visualisation of architecture within and across business domains.
The Archimate Modeller is a native iPad app for creating and editing of Archimate models. I developed this app for a previous employer. I was part of a small team consisting of 2 iOS developers and a product owner. The app was developed in Objective-C for iOS 7. It was an extremely interesting and challenging project 🙂
The app is not available in the App Store, but below are a few screen shots to give you an idea. If you want to know more about available Archimate tooling I suggest you take a look at Archi (a desktop app).