From haym37 Software:
With iStudent, tracking grades is easy. No more adding up all the numerators and dividing by all the denominators. With iStudent you can: view all of your grades in a table, view your average for each subject, and view a graph of your grades. The graph displays your average as the year, marking period or semester (you choose) progresses. Each point is your average with a new grade. Therefore, the point to your foremost right is your current average. On the line graph, each subject is a different line with a different color. Also, if multiple people want to use iStudent and use the same computer/account on Mac OS X. You can even choose to password-protect your grades. Version 1.2 may include unspecified updates, enhancements, or bug fixes.