I want to talk about different approaches in writing mobile apps. I will tell you when it is a good idea to pretend that your responsive website is an app. Also about evolution of this idea from basecamp and DHH - turbolinks. I will tell you about my lovely ReactNative and the problems it has. When you can't avoid writing apps in native sdk and what difficulties you may face going this way.
Last year I used to write apps in objective-c. My open source works mostly around react native but my heart is with Ruby on Rails.