Attendance|Planning
Attendance ($5.99)
GradePad ($2.99)
InClass (free, or get ad-free version for $2.99)
Advertised for students but it’s so full-featured it could be useful for anyone. The app supports multimedia notes, sharing, and background recording. It’s a scheduler and an organizer since you can also create task lists.
TeacherPal (free)
TeacherTool (free)