A free portable pocket sized real-time synced whiteboard for teaching & explaining...

LiveSyncDesk is a portable pocket size real-time synced board.
LiveSyncDesk requires No login, No sign in to use. Even it doesn't need to be downloaded (if someone doesn’t want to download it) , it directly opens in browsers (Inside some app browsers download/save option may not allowed, Chrome is recommended).

An invitation link is enough to start quick syncing between/among the boards. It's free and the shared link could be used as same address to be synced again and again with the particular invitees.