This is simple web app interface for easier and user friendlier conversation with the ChatGPT. You will need first to insert you OpenAI key which you can get from OpenIA web site
You can check app here Simple ChatGPT web app
Or you can download native apps for macOS and Win here.
Dependency for Windows installation here.
After visiting this web simple make a shortcut on the screen of your mobile and follow screens down as instructions. App interface is very simple and you will not need to much information how to use it. OpenAI key which you insert is ONLY locally saved on you mobile phone and when you delete the app, the OpenAI key will be deleted also.
App can be installed on that way in any mobile, tablet, laptop, desktop etc.
No data/info are collected.