I didn't read the thread, just your question - so I apologize if this is a repeat - but I bought an app for my iPhone called "Guitar Toolkit" and it has a bass tuner and metronome. I think it was like $10? I use that sometimes (more for the tuner) but more frequently I'll play along to drum tracks on YouTube when I'm practicing by myself. That way I can create my own lines but still follow a beat. I also have the "Drum Beats+" app and I think that cost the same, you can buy different music packs too. I find it much more enjoyable to play along to drums rather than a click. The YouTube tracks tend to have more variety (intros & fills) just like a real song would have - while the app will just keep looping the same beat until you hit stop.
