iDroo

iDroo is a browser-based online whiteboard and teaching platform for tutors, teachers, students and teams. It runs in a web browser without a desktop installation.

Work together on an expanding canvas with freehand drawing, text, shapes, sticky notes and mathematical notation. Write equations using TeX-like commands, import PDFs, images and office documents, and annotate materials directly on the board. Boards are saved for later use.

Share a board by link or QR code, collaborate in real time, and manage participant permissions. Built-in chat, voice and video calls, and screen sharing keep communication alongside the whiteboard. Starting calls requires a paid plan; other participants can join an open call without a paid subscription.

Teaching tools include courses, lessons, assignments, student submissions, feedback and grading. Live Group Lessons combine a shared teacher board with private student workspaces and a view of class progress.

A free plan is available, with paid subscriptions adding features and capacity. Guest access depends on the board owner's plan and sharing settings.