Possible target apps for testing

[pipe2null]

Rapid draw is awesome, and Boox is grossly overdue for this functionality! Thank you!

Sketchbook (from sketchbook.com)
If rapid draw can work with Sketchbook cleanly, then just about any other app should as well. Some functionality might not be possible without explicit knowledge of the brushes used in the app, but pushing input data to the underlying app in a more "real-time" way instead of batching up the input might optimize perf enough to be worthwhile. The app also tracks non-contact position for some brushes for custom mouse cursors/etc.

Excalidraw for Obsidian, using Boox's keyboard handwriting input for text:
This example app can bounce between system and app stylus control/focus. You can draw with pen, then insert a text box which brings up the system keyboard for handwriting input which causes Rapid Draw to lose focus. Currently, you have to stop-start Rapid Draw after using the keyboard for handwriting input, before it will work again for regular drawing.

[jdkruzr]

Obsidian Excalidraw works fine, sort of, but in general it handles Boox pen input poorly. You have to draw very slowly or the stroke smoothing it does makes handwritten text illegible.