Woah! This next feature took about a month of on/off development (it's not super easy being a solo entrepreneur when there are walls to paint in the house...), but the attendances module is here!
The attendance module is what enables members registered to a specific program to check-in during a program session. Cloudgenda will automatically track members' attendances, and from there administrators can generate quite a bunch of fun reports. For example, you can know which members are currently participating in your program(s), how long has it been since a member didn't attend a program session, what's the average age of the members currently attending your session, and so much more.
The attendance module is out, but not yet advanced to my liking. Stay tuned as a richer set of features will be made available in a few weeks.