Interactive Android Internals

Step-through visualizations of how Android, Jetpack Compose, and Flutter actually work under the hood — companions to my article series.

Visualizations

Flutter: Three Trees

How Flutter builds, diffs, and paints: throwaway Widgets, the persistent Element spine, heavyweight RenderObjects — and the engine that draws every pixel itself. Mirror of the Compose page, with the Compose parallel at every step.

Flutter Framework internals vs Compose

Jetpack Compose: Two Trees

How Jetpack Compose turns bookkeeping into pixels: the slot table, the LayoutNode tree, and the one real View that smuggles it all into the classic Android pipeline — with the Flutter parallel at every step.

Jetpack Compose Android internals Flutter