I love the playground at try.kotlinlang.org
I'm enjoying adding and deleting code to find how kotlin works compared to other languages through trial and error.
however, I've been doing this on my Nexus 7 tablet and the experience is difficult. The cursor will jump to places I don't want it to go. The playgrounds within the sololearn app are much better on a mobile device.
I can't find an app that does the equivalent for kotlin. Does anyone know if it exists or could be created?