diff --git a/android/app/src/main/kotlin/es/freetimelab/pluriwave/MainActivity.kt b/android/app/src/main/kotlin/es/freetimelab/pluriwave/MainActivity.kt
index c6ec656..c92fc98 100644
--- a/android/app/src/main/kotlin/es/freetimelab/pluriwave/MainActivity.kt
+++ b/android/app/src/main/kotlin/es/freetimelab/pluriwave/MainActivity.kt
@@ -228,7 +228,7 @@ class MainActivity : AudioServiceActivity() {
                 "overrideMediaVolumeForRing" -> {
                     val fraction = call.argument<Number>("fraction")?.toFloat() ?: 1.0f
                     Log.d(tag, "alarm.channel overrideMediaVolumeForRing fraction=$fraction")
-                    overrideMediaVolumeForRing()
+                    overrideMediaVolumeForRing(fraction)
                     result.success(null)
                 }
                 "restoreMediaVolume" -> {
@@ -320,7 +320,7 @@ class MainActivity : AudioServiceActivity() {
      * by device volume 0. Idempotent: a second call while already overridden
      * is a no-op so the originally captured value is never clobbered.
      */
-    private fun overrideMediaVolumeForRing() {
+    private fun overrideMediaVolumeForRing(fraction: Float) {
         if (mediaVolumeOverridden) {
             Log.d(tag, "alarm.channel overrideMediaVolumeForRing skipped (already overridden)")
             return
@@ -329,10 +329,19 @@ class MainActivity : AudioServiceActivity() {
             val audioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager
             val current = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)
             val max = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC)
-            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, max, 0)
+            // Cap the stream at the alarm's configured fraction of the device
+            // maximum (not the raw max): this keeps the ring independent of the
+            // device's own volume (audible at 0) while "50%" means 50% of max,
+            // with the player ramping up to full underneath this cap. At least
+            // 1 so the ring is never silenced by rounding.
+            val target = Math.round(max * fraction.coerceIn(0f, 1f)).coerceIn(1, max)
+            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, target, 0)
             capturedMediaVolume = current
             mediaVolumeOverridden = true
-            Log.d(tag, "alarm.channel overrideMediaVolumeForRing captured=$current max=$max")
+            Log.d(
+                tag,
+                "alarm.channel overrideMediaVolumeForRing captured=$current target=$target max=$max"
+            )
         } catch (error: Throwable) {
             Log.e(tag, "alarm.channel overrideMediaVolumeForRing failed", error)
         }