I saw this app had been added recently. It claims that “ANONguard anonymises the Internet connection. In the process, the IP address of the smartphone is hidden with the help of the AN.ON anonymisation service (https://anon.inf.tu-dresden.de/).” Is this real and does what it says? The “anonymisation service” link gives an error to me.
There might be an AN.ON server or two left running, but it’s pretty much dead, see also https://en.wikipedia.org/wiki/Java_Anon_Proxy