> ## Documentation Index
> Fetch the complete documentation index at: https://yoqa.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Non-Native UI

> Testing apps with WebViews, canvas, and custom-drawn UI.

WebViews, Flutter/React Native canvases, and custom-drawn controls often expose weak or empty accessibility trees.

## Prefer vision

* Autonomous Yoqa runs already use screenshots — ideal for these UIs.
* For CLI agents, lean on `yoqa screenshot` + `-d` grounding when `yoqa screen` is empty or misleading.

## Describe visually

Name what a human would see: color, icon shape, relative position ("blue circular FAB bottom-right"), not internal view IDs.

## Hybrid screens

If only part of the screen is native, still write goal-level instructions; add detail only for the custom region that the agent mis-taps.

Related: [Games](/guide/best-practices-games).