App Interface Guideline: Navigation — Bottom Tabs. Keywords: tab bar max items. Platform: iOS/Android/React Native. Description: Bottom tab bar should have at most 5 primary items. Do: Use 3–5 tabs and move extras to More/Settings. Don't: Overloaded tab bar with many icons. Good Example: Home/Explore/Profile/Settings. Bad Example: Home/Explore/Shop/Cart/Profile/Settings/More. Severity: Medium.