We use some rubrics on different skills that we found, which we cover during the year and we try to assess the students following those guidelines. We also have the students do some self assessments at the end of classes, sometimes on effort /sportsmanship, and other times it be on a skill. We don't do assess everyday, but at least once a week.

We have not found any apps that would help us at an elementary level yet. I guess I should develop one.

I teach a fitness class for grades 7/8. I feel like I have finally come up with a system that accurately determines their grade.
1. 5 points a day for being on time, being in proper clothing,participation.
2. They have a 10 point YouTube assignment. Assigned on Monday due by Friday. Usually deals with character traits and parents are involved with these as well.
3. They have a weekly heart rate monitor grade.
4. They have a distance to achieve on a treadmill, elliptical, bike or rower. .
That is 55 points per week and is performance based. Takes any guess work out of it. The grade they get is what they earn.