I think Hold'Em Manager 2 is the 'goto' tracker.

The Hand database of your play for later analysis can be very useful even on anonymous tables.
Whether it's worth spending the money for you'll have to decide for yourself. You can get your hand records without a tracker anyway.


VPIP/PFR could conceivably be some use if you lay long sessions and are unobservant but it's far more likely to be a distraction.