diff --git a/app/src/main/kotlin/com/shonar/desktop/DesktopState.kt b/app/src/main/kotlin/com/shonar/desktop/DesktopState.kt
index 5361cef..69eaa47 100644
--- a/app/src/main/kotlin/com/shonar/desktop/DesktopState.kt
+++ b/app/src/main/kotlin/com/shonar/desktop/DesktopState.kt
@@ -153,7 +153,7 @@ class DesktopState(private val appDir: File = defaultAppDir()) {
 
     /** UI theme: Sonar (the Android companion's palette) is the default;
      *  Meridian and Light are opt-in and persisted. */
-    private val _themeMode = MutableStateFlow(ThemeMode.SONAR)
+    private val _themeMode = MutableStateFlow(ThemeMode.DEFAULT)
     val themeMode: StateFlow<ThemeMode> = _themeMode.asStateFlow()
     fun setThemeMode(mode: ThemeMode) {
         _themeMode.value = mode
@@ -161,7 +161,7 @@ class DesktopState(private val appDir: File = defaultAppDir()) {
             prefs.putString(KEY_THEME, when (mode) {
                 ThemeMode.LIGHT -> "light"
                 ThemeMode.MERIDIAN -> "meridian"
-                ThemeMode.SONAR -> "sonar"
+                ThemeMode.DEFAULT -> "default"
             })
         }
     }
@@ -200,7 +200,7 @@ class DesktopState(private val appDir: File = defaultAppDir()) {
                 // pick Meridian explicitly to get the old look back
                 "light" -> ThemeMode.LIGHT
                 "meridian" -> ThemeMode.MERIDIAN
-                else -> ThemeMode.SONAR
+                else -> ThemeMode.DEFAULT
             }
             loadNotifyState()
             prefs.getString(KEY_FOLDER)?.let { File(it).takeIf { it.isDirectory } }
diff --git a/app/src/main/kotlin/com/shonar/desktop/Screens.kt b/app/src/main/kotlin/com/shonar/desktop/Screens.kt
index 691b3c4..5a3ce59 100644
--- a/app/src/main/kotlin/com/shonar/desktop/Screens.kt
+++ b/app/src/main/kotlin/com/shonar/desktop/Screens.kt
@@ -1329,9 +1329,9 @@ fun SettingsScreen(state: DesktopState) {
         Row(horizontalArrangement = Arrangement.spacedBy(Shonar.Space2),
             verticalAlignment = Alignment.CenterVertically) {
             val mode = state.themeMode.collectAsState().value
-            PillChip(selected = mode == ThemeMode.SONAR,
-                onClick = { state.setThemeMode(ThemeMode.SONAR) },
-                label = "Sonar")
+            PillChip(selected = mode == ThemeMode.DEFAULT,
+                onClick = { state.setThemeMode(ThemeMode.DEFAULT) },
+                label = "Default")
             PillChip(selected = mode == ThemeMode.MERIDIAN,
                 onClick = { state.setThemeMode(ThemeMode.MERIDIAN) },
                 label = "Meridian")
@@ -1339,10 +1339,10 @@ fun SettingsScreen(state: DesktopState) {
                 onClick = { state.setThemeMode(ThemeMode.LIGHT) },
                 label = "Light")
         }
-        HelperText("Sonar is the Android companion app's palette (navy + " +
-            "coral) — the default, so desktop and phone read as one " +
-            "product. Meridian is the charcoal/blue look; Light mirrors " +
-            "the same hierarchy on paper tones. Applied instantly.")
+        HelperText("Default is the Android companion app's palette (navy + " +
+            "teal) — so desktop and phone read as one product. Meridian " +
+            "is the charcoal/blue look; Light mirrors the same hierarchy " +
+            "on paper tones. Applied instantly.")
         SectionHeader("Recordings folder")
         Row(verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.spacedBy(Shonar.Space2)) {
diff --git a/app/src/main/kotlin/com/shonar/desktop/Theme.kt b/app/src/main/kotlin/com/shonar/desktop/Theme.kt
index 20f6d1f..60a5f0d 100644
--- a/app/src/main/kotlin/com/shonar/desktop/Theme.kt
+++ b/app/src/main/kotlin/com/shonar/desktop/Theme.kt
@@ -158,11 +158,12 @@ private val SonarPalette = ShonarPalette(
     highlightTint = Color(0xFF0B2E26),   // deep teal row wash on navy
 )
 
-/** Which palette the app renders in. Persisted as "sonar" / "meridian"
- *  / "light" (legacy "dark" loads as SONAR). SONAR mirrors the Android
- *  companion app's palette so the two read as one product; MERIDIAN is
- *  the charcoal/blue look from the Sep design pass, kept optional. */
-enum class ThemeMode { SONAR, MERIDIAN, LIGHT }
+/** Which palette the app renders in. Persisted as "default" /
+ *  "meridian" / "light" (legacy "dark"/"sonar" load as DEFAULT).
+ *  DEFAULT mirrors the Android companion app's palette so the two read
+ *  as one product; MERIDIAN is the charcoal/blue look from the Sep
+ *  design pass, kept optional. */
+enum class ThemeMode { DEFAULT, MERIDIAN, LIGHT }
 
 object Shonar {
     // ---- palette routing ----
@@ -370,13 +371,13 @@ private val ShonarLightScheme = lightColorScheme(
  *  (dark is the signature default). */
 @Composable
 fun ShonarTheme(
-    mode: ThemeMode = ThemeMode.SONAR,
+    mode: ThemeMode = ThemeMode.DEFAULT,
     content: @Composable () -> Unit,
 ) {
     val palette = when (mode) {
         ThemeMode.LIGHT -> LightPalette
         ThemeMode.MERIDIAN -> DarkPalette
-        ThemeMode.SONAR -> SonarPalette
+        ThemeMode.DEFAULT -> SonarPalette
     }
     // Every typography tier carries explicit per-palette ink: a TextStyle
     // with no color falls back to Compose's default BLACK, which is