I'm just back form the ESRI Developer Summit where there was quite a bit of buzz surrounding AppStudio for ArcGIS and Qt-QML. I haven't tinkered with that technology yet, but I have been working with Android Studio and created a few native phone and tablet apps with it and the ArcGIS API. I've just been tasked with creating an app for the IPhone / IPad, and Android devices that will allow a utility field worker to scan a barcode on a pole or a transformer and then retrieve some attribute data about it from the GIS (using a REST call to a MapService). I have zero knowledge of developing for the IPhone or IPad and am wondering if AppStudio might be the path of least resistance for something like this? It wouldn't be too hard to pull this off just for Android as there are some 3rd party libraries to do the barcode scanning. Can Qt-QML and AppStudio do this? Should I consider Xamarin instead? Should I buckle down and learn how to write apps for IThis and the IThat?