I share the opinion of heinschütz. For experienced IT users, you can also set up the RTSP stream separately so that you can use it. However, the RTSP stream alone does not offer any "setting options" or "move/zoom options". But I was able to integrate this stream into my Homematic controller app and can view this stream at any time via my central control unit.

The camera can only be accessed via a mobile app and by logging in with a TP-Link account.

@altbertolenz: I bought a Lupus LE202 some time ago. In my opinion, it had a pretty good web frontend - without the need for an account. I used the camera to monitor my 3D printer via RTSP. The quality is okay.

@BigKub: Correct answer. Short, concise and unfortunately correct.

@heinschütz / owerner:
The simplicity of the app was not asked, but whether the device offers a web interface.
I asked myself the same question, namely because I don't want to install a separate app for each device, which then requests half a dozen rights on the phone that are in no way necessary to provide the function. Furthermore, of course, an account requires...

It is very easy to install and operate the C210 with the Tapo app. The camera can be accessed via the internet from anywhere without having to set up shares in the router. I have never had the need to access the camera with a web browser.