Does this install junk on your iPhone? For example, I do not want or need a general SSH server running on my phone. If I did this, it would be solely for tethering, and not for running Python media servers or SFTP or scripted Ruby GUIs or tweaking out the system or whatever. So I'm leery of running something that has the power to just shove a bunch of junk onto my phone, which is what happened the last time I tried this (and consequently reduced the battery life down to about a single day or less, until I restored it to normal. I don't even know what was draining it, but I'm assuming it was some kind of server daemon.)