I use a iPad Pro for exactly this case. I do 50-75% of my everyday work on it. I develop node.js and web frontends and iOS apps. I mostly do my node work on ema

I use a iPad Pro for exactly this case. I do 50-75% of my everyday work on it. I develop node.js and web frontends and iOS apps. I mostly do my node work on emacs on a remote server via Coda. Recently I've using swift playgrounds to do real work on the iOS side and it's been great, though often I need to break out the macbook pro for debugging sessions.