LispPad, by the same author, is based on this. LispPad is a very good Lisp (Scheme with good iOS/macOS utility library support) programming environment for iOS/iPadOS and macOS, recommended!
I usually use LispWorks Pro, sometimes Racket, but, LispPad is a lot of fun and very well written.
I usually use LispWorks Pro, sometimes Racket, but, LispPad is a lot of fun and very well written.