A short script, scripts/a11y-audit.py, reads a uiautomator dump and lists every tappable element with the label TalkBack would read and its size in dp (pixels / 2.625 at 420 dpi). The cart, before and after fixes:
$ before Remove 72 x 34 UNDER 48 DP Remove 72 x 33 UNDER 48 DP Checkout 383 x 40 UNDER 48 DP <icon>, Catalog 206 x 49 ICON GLYPH <icon>, 3, Cart 206 x 49 ICON GLYPH $ after Remove Salt and Saffron 72 x 48 Remove The Clockmaker's Paradox 72 x 48 Checkout 383 x 48 Find a bookshop 383 x 48 Catalog 206 x 49 Cart, 3 books in your cart 206 x 49
Three kinds of problem showed up. Two identical "Remove" buttons gave no hint which book they removed; each now has an aria-label with the title. Three targets were under 48 dp; min-h-[48px] fixed them (NativeWind's min-h-12 would have been only 42 dp, because its rem is 14 on native). And each tab's label began with a private-use character, the Ionicons glyph drawn as text, so TalkBack would have read a meaningless symbol; the tabs now set tabBarAccessibilityLabel, and the cart tab's label includes the count. "Find a bookshop", a text Link, was not even reported as tappable; it became a Pressable with role="link".
Then the cart's strings moved into the JSON files and its prices through money():
The Arabic screen is mirrored without any Arabic-specific style. Book titles stay in English: they are catalog data, which the API should translate, not the app.