diff --git a/appstores/android/README.md b/appstores/android/README.md
index b78e10ea..d5e38f5a 100644
--- a/appstores/android/README.md
+++ b/appstores/android/README.md
@@ -45,3 +45,12 @@ permission prompt, full-screen video, and an offline screen instead of Chrome's.
 ## Listing
 
 Copy and art live in `store/` — see `store/listing.md`.
+
+## Known limit: old WebViews
+
+On an API 30 emulator (WebView ~Chromium 83) the app launches and the page renders completely unstyled. pairux.com is built with Tailwind v4, whose stylesheet wraps everything in `@layer`; an engine without cascade layers (below Chromium 99) drops every layered block, and `color-mix()` needs 111. The page is readable but unstyled, not broken.
+
+Google Play devices update WebView through the Play Store, so a current phone
+renders this correctly whatever its Android version — the floor only bites on
+devices that cannot update WebView, which is why it matters far more for
+`../firetv` than it does here. Check a real device before the first release.