FWIW, I was able to get a decent way into making my own client for ChatGPT by asking the free 3.5 version to do JS for me* before it was made redundant by the real app, so this shouldn't be too hard if you want a specific experience/workflow?

* I'm iOS by experience; my main professional JS experience was something like a year before jQuery came out, so I kinda need an LLM to catch me up for anything HTML

Also, I wanted HTML rather than native for this.