I use jupyter notebook for Scala. I like having the same repl software for multiple languages.
The kernel I use (almond) is based on Ammonite, but I believe there are others out there.
Please don't try to compare Clojure REPL (or any Lisp REPL) with jupyter notebooks or something similar. The latter are mere "interactive environments" compared to "real" Lisp REPL. You have to actually try Clojure REPL and see what makes it so special.
Thank you for the jupyter notebook tip though. As I do have a biggish Scala app to maintain any help with it is good. :) Thanks again.