You can try using BiglyBT on android following these instructions: https://github.com/BiglySoftware/BiglyBT/wiki/I2P#user-content-biglybt-i2p-and-android
Otherwise, I'd suggest using a desktop to run i2psnark, BiglyBT, or qBittorrent and use i2pd along with those clients.
You can use one i2pd router for many clients/services, as long as your device can handle it.
https://geti2p.net/en/docs/how/threat-model#sybil
Good write-up from the I2P team on this topic. Page includes other attack vectors as well.
This is a good point. I also feel like private trackers are meant for people who actually seed content they download, and just have good intentions to help share content. This also comes with hardware requirements (disk space) sometimes that not everyone has.
It would be nice to have qBittorrent auto add I2P trackers to all torrents to help cross-seed them.
I'll check out MuWire, was unaware that it used DHT.
Also, I am just saying that tracker2.postman.i2p is the only torrent directory we have currently, and its best way to find and advertise torrents for others. Trackers (where your client announces to) are helpful to finding peers of the same torrent.
Here is an ansible role you can use to deploy i2pd to linux servers and such: https://codeberg.org/systemfailure.net/ansible_i2pd. Otherwise, on most distros the i2pd package should be able to be installed from the package managers in the terminal.
What I mean is if I create a new torrent of Big Buck Bunny with a InfoHash of b1946ac92492d2347c6235b4d2611184 for example, no one will find my torrent by searching for "Big Buck Bunny". Unless I post this hash somewhere, advertising "Hey, this torrent is Big Buck Bunny" like what 1337x and other torrent sites do, you won't "find" it. Basically, we have to use a torrent indexer like tracker2.postman.i2p to search the metadata and find torrents we want. If that makes sense.
Yes, I did exactly this when I2P support was first in beta. I have a docker stack with Gluetun as my network for all my *arr containers and I was able to still point my qBittorrent to my i2pd router and it worked just fine.
It is experimental indeed. While it "works", it is no where near the reliability and efficiency of other I2P torrent clients like I2Psnark or BiglyBT, both of which are Java based.
https://geti2p.net/en/download for the java version, which comes with extra apps. Otherwise, you can go to https://i2pd.website/ for the C++ version which is much lighter and you can just point your browser/torrent clients at the i2p router and you are good to go.