Wulang: Live Room Lessons

ulang turns one Android phone into a live lesson board for nearby tutoring and study.

Open a room, write on the vector canvas, and let learners follow each stroke on their own screens. Learners can zoom independently without moving anyone else's view, then return to the teacher's board when they are ready.

When part of a lesson is unclear, a learner can send one anonymous comprehension signal. Wulang groups small totals into ranges and places the moment on the teaching timeline without asking for a name, account, profile, or roster.

After the room ends, each attending phone can keep its own compact lesson copy. Replay the timed ink, scrub the timeline, change playback speed, and revisit the exact point where the explanation changed.

Live vector ink with pressure-aware width and smooth local echo, same-Wi-Fi room discovery with a four-digit code, manual local-address joining, optional Android Wi-Fi Direct link, independent learner pan and zoom, anonymous confusion points shown as ranges, snapshot catch-up, and app-private lesson storage with timed replay.

Wulang has no cloud lesson service or account system. Live room frames travel directly between participating devices. A connected-device notification appears only while a lesson room is active.