DrawAnywhere lets you sketch, annotate, and highlight directly on top of any screen — great for video courses, tutorials, and presentations.

<b>Drawing tools</b>
<ul><li>Freehand pen, rectangle, ellipse, and laser pointer</li>
    <li>Pixel eraser; stroke eraser via stylus button</li>
    <li>50-step undo/redo</li>
    <li>HSV color wheel, 18 presets, recent colors, hex input</li>
    <li>Stroke width and opacity sliders</li></ul>

<b>Canvas and gestures</b>
<ul><li>Infinite canvas — pan and pinch-to-zoom freely</li>
    <li>Three-level lock (none, zoom only, all) with HUD indicator</li>
    <li>Two-finger pinch: zoom | double-tap: reset zoom | triple-tap: reset position</li>
    <li>Three-finger double-tap: toggle passthrough | triple-tap: hide canvas</li></ul>

<b>Toolbar</b>
<ul><li>Horizontal and vertical layout, draggable anywhere via long‑press</li>
    <li>Auto-dims after 3 seconds of inactivity</li>
    <li>Hide canvas or pass touch events through to the app below</li>
    <li>Finger-drawing toggle for stylus-only mode</li></ul>

<b>Convenience</b>
<ul><li>Quick Settings tile to toggle the service</li>
    <li>Drag the toolbar to the bottom of the screen to close the app</li>
    <li>Second-launch closes the service</li>
    <li>Brush hover preview while drawing</li></ul>

<b>Tips</b>
<ul><li>Turn on <tt>Clear canvas on hide</tt> to auto-clear when hiding the canvas (passthrough is also disabled).</li>
    <li>Turn off <tt>Open canvas on start</tt> to hide the canvas on startup.</li></ul>

Source: <a href="https://github.com/DrawAnywhere/DrawAnywhere">https://github.com/DrawAnywhere/DrawAnywhere</a>
