How to use kotlin playground in sololearn?

Answer 1

you have a beta version sololearn app.. mail to [e-mail] and tell them you joine beta tester group and follow the instruction which sololearn sent you..

Answer 2

Unfortunately, there isn't an option to enter the code playground directly on mobile. Check out this link though, it should help you get to it if you're not a beta tester - https://www.sololearn.com/Discuss/1052386/?ref=app