Get something like tourny manager to manage your money and to watch overall how your playing and stats.

Get something like SNGEGT, SNGWIZ, or SNGPT to run through hands after a tournament to help you determine if your plays were really +EV. This will help you make better decisions in the future when at the tables.

For SNGs you should get SNGwizard to review your push/shove decisions at the end of each session and Holdem Manager to track your results, record your hands, and track your opponents statistics.