CL REPL is a Common Lisp REPL designed for Android users. It comes with a command line and a history feature, along with a simple editor that has syntax highlighting, basic auto-completion, and a visual paren-matching feature. Additionally, it has a file dialog for opening/saving files and a debug dialog. It is built using the ECL implementation for the Lisp side and the Qt5/QML for the UI.

One of the best features of CL REPL is that it includes the patched version of Slime, which makes it easy to install Quicklisp. Moreover, it is an open-source project with a repository link provided in the description. However, it should be noted that if you want SSL support, you'll need to follow specific instructions mentioned in the READMEs.

Overall, CL REPL is a great Common Lisp REPL for Android users with an easy-to-use interface and useful features for Lisp programming.