Desktop app for ChatGPT?

Forgive me if this question is a bit silly, or conceptually incorrect (I’m not fully across how the APIs work and effect ChatGPT implementations etc).

I’m looking for a ChatGPT (or similar) desktop app. HemulGM’s ChatGPT app is tempting, especially because it seems to include/support DALL-E and GPT-3 and -4, but I haven’t found much discussion online from users. My biggest concern is security…I chickened out before running the .exe due to Windows’ “unknown dev” warning, and because the dev’s website is a .ru address (hate to say it, but that’s a yellow flag for me in today’s cyber climate).

Does anyone have any thoughts or experience with this particular desktop app? Or better alternatives? Ideally free and open-source, but I know that may be asking a lot and I’m open to suggestions.

Appreciate it!