Whiteboard by Endless AI

Whiteboard is a cross-platform visual workspace for math teachers, tutors, coaches, and students. Draw mathematical figures with many pen colors, shapes, arrows, a laser pointer, and focus mode; import images or PDF worksheets for annotation; present by projection or screen sharing; and export explanations. Coaches can use numbered players, balls, and court or field templates for tactics. It runs on iPhone/iPad, Android, Mac, Windows, and Linux. Downloads are free, with optional paid features varying by platform.