diff --git a/shared/src/commonMain/kotlin/com/fluxa/app/shared/FluxaAppState.kt b/shared/src/commonMain/kotlin/com/fluxa/app/shared/FluxaAppState.kt
new file mode 100644
index 0000000..11e6de3
--- /dev/null
+++ b/shared/src/commonMain/kotlin/com/fluxa/app/shared/FluxaAppState.kt
@@ -0,0 +1,32 @@
+package com.fluxa.app.shared
+
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.runtime.Composable
+import com.fluxa.app.shared.feature.catalog.CatalogHomeUiState
+
+@Stable
+class FluxaAppState internal constructor(initialState: FluxaAppUiState) {
+    var uiState by mutableStateOf(initialState)
+        private set
+
+    fun selectDestination(destination: FluxaDestination) {
+        uiState = uiState.copy(destination = destination)
+    }
+
+    fun updateCatalogHome(catalogHome: CatalogHomeUiState) {
+        uiState = uiState.copy(catalogHome = catalogHome)
+    }
+
+    fun updateLanguage(language: String?) {
+        uiState = uiState.copy(language = language)
+    }
+}
+
+@Composable
+fun rememberFluxaAppState(initialState: FluxaAppUiState = FluxaAppUiState()): FluxaAppState {
+    return remember { FluxaAppState(initialState) }
+}