Sketch is not a UX design tool
Pauli Olavi Ojala

Sketch is moving in this direction though. Especially with scalable artboards and getting more advanced reactive symbols, plugins like launchpad that let you generate websites from sketch files etc. It’s not there yet but it’s headed there. One of subform’s first critiques of sketch in their video is that Sketch doesn’t have scalable artboard, which Sketch actually just implemented. And Sketch files are now JSON files which means third party developers have much more power to do amazing things with the files.