You can add a TCP based REPL to any LambdaNative app by inclusion of a single module. This allows you to connect through emacs and run&#x2F;alter code on the live system, potentially directly on the mobile device (although it would make more sense to do this sort of iterative development on a build for the localhost). The setup is described here:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;part-cw&#x2F;lambdanative&#x2F;wiki&#x2F;Using-Emacs" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;part-cw&#x2F;lambdanative&#x2F;wiki&#x2F;Using-Emacs</a>