diff --git a/docs/ai/architecture.md b/docs/ai/architecture.md
index a24c2d3f..e8b212ef 100644
--- a/docs/ai/architecture.md
+++ b/docs/ai/architecture.md
@@ -266,9 +266,11 @@ Slate-based. `Editor.tsx` (Slate root — preserve), `Editor.preview.tsx`, `Elem
 
 ### settings.ts fields & migrations
 
-Current `Settings` fields: `themeId? ('light-theme'|'dark-theme')`, `useSystemTheme`, `monochromeMode?`, `isMarkdown`, `editorToolbar`, `twitterEmoji`, `pageZoom`, `hideActivity`, `isPeopleDrawer`, `memberSortFilterIndex`, `enterForNewline`, `hideMembershipEvents`, `hideNickAvatarEvents` (default true), `mediaAutoLoad`, `urlPreview`, `encUrlPreview`, `showHiddenEvents`, `isNotificationSounds`, `inviteSpamFilter`, `developerTools`, `migrationsApplied?`.
+Current `Settings` fields: `themeId? ('light-theme'|'dark-theme')`, `useSystemTheme`, `monochromeMode?`, `isMarkdown`, `editorToolbar`, `twitterEmoji`, `pageZoom`, `hideActivity`, `isPeopleDrawer`, `memberSortFilterIndex`, `enterForNewline`, `hideMembershipEvents`, `hideNickAvatarEvents` (default true), `mediaAutoLoad`, `urlPreview`, `encUrlPreview`, `showHiddenEvents`, `inviteSpamFilter`, `developerTools`, `migrationsApplied?`.
 
-`getSettings()` runs three one-shot migrations: `dawn-redesign-v1` (pins **existing** users — stored JSON present — to dark; brand-new users keep `useSystemTheme:true`), `dawn-p3c-cleanup` (drops `messageLayout`/`messageSpacing`/`legacyUsernameColor`), `system-time-format-cleanup` (drops `hour24Clock`/`dateFormatString` — time/date now derive from the runtime locale via `Intl.DateTimeFormat` in `utils/time.ts`). **Known platform limitation**: Android's manual "24-hour" toggle is invisible to `Intl`; only a native bridge to `DateFormat.is24HourFormat` would respect it.
+`getSettings()` runs one-shot, stamped migrations: `dawn-redesign-v1` (pins **existing** users — stored JSON present — to dark; brand-new users keep `useSystemTheme:true`), `dawn-p3c-cleanup` (drops `messageLayout`/`messageSpacing`/`legacyUsernameColor`), `system-time-format-cleanup` (drops `hour24Clock`/`dateFormatString` — time/date now derive from the runtime locale via `Intl.DateTimeFormat` in `utils/time.ts`), `dawn-orphan-settings-cleanup` (drops `editorToolbar`/`encUrlPreview`/`showHiddenEvents`), `notification-sound-cleanup` (drops `isNotificationSounds` — the bundled in-app alert sounds were removed; alerts are owned by the system: Android native notification channels + web push). **Known platform limitation**: Android's manual "24-hour" toggle is invisible to `Intl`; only a native bridge to `DateFormat.is24HourFormat` would respect it.
+
+**No bundled alert sounds.** Vojo ships **no** `<audio>`-played notification/ring files (the Cinny `notification.ogg` message chime and the DM-call `ring.ogg`/`ring.mp3` were removed). Alert sound is owned entirely by the system: Android native channels use `RingtoneManager.getDefaultUri()` + system vibration (`VojoFirebaseMessagingService`), web relies on the push/OS notification. Consequence: on **web/desktop and foreground Android**, an incoming call shows the visual `IncomingCallStrip` but is **silent** (no system ring surface there). Element Call's own in-widget sound effects (reactions, join/leave) are third-party and untouched.
 
 ## Theming
 
diff --git a/public/locales/en.json b/public/locales/en.json
index 55631868..25c8efe3 100644
--- a/public/locales/en.json
+++ b/public/locales/en.json
@@ -218,8 +218,6 @@
     "block_messages_moved": "This option has been moved to \"Account > Block Users\" section.",
     "system": "System",
     "enable": "Enable",
-    "notification_sound": "Notification Sound",
-    "notification_sound_desc": "Play sound when a new message arrives.",
     "invite_spam_filter": "Spam Invites Filter",
     "invite_spam_filter_desc": "Hide incoming chat invites that look like spam (mass mailings, banned senders, suspicious words). Disable to see every invite as-is.",
     "push_notifications": "Background Notifications",
@@ -324,7 +322,7 @@
     "privacy_policy_title": "Privacy Policy",
     "privacy_policy_desc": "How your data is handled.",
     "privacy_policy_open": "Open",
-    "about_credits": "Vojo is built on open-source software — including matrix-js-sdk (Apache 2.0), Twemoji (CC-BY 4.0) and Material Design sounds (CC-BY 4.0).",
+    "about_credits": "Vojo is built on open-source software — including matrix-js-sdk (Apache 2.0) and Twemoji (CC-BY 4.0).",
     "default_for_new_chats": "Default for new chats",
     "default_for_new_chats_desc": "Notification level for new direct messages and rooms.",
     "notify_on_mention": "Mentions",
diff --git a/public/locales/ru.json b/public/locales/ru.json
index 9ef1e1e5..875811b5 100644
--- a/public/locales/ru.json
+++ b/public/locales/ru.json
@@ -218,8 +218,6 @@
     "block_messages_moved": "Эта опция перенесена в раздел «Аккаунт > Заблокированные пользователи».",
     "system": "Система",
     "enable": "Включить",
-    "notification_sound": "Звук уведомлений",
-    "notification_sound_desc": "Воспроизводить звук при получении нового сообщения.",
     "invite_spam_filter": "Фильтр спам-приглашений",
     "invite_spam_filter_desc": "Скрывать входящие приглашения в чаты, похожие на спам (массовые рассылки, заблокированные отправители, подозрительные слова). Выключите, чтобы видеть все приглашения как есть.",
     "push_notifications": "Фоновые уведомления",
@@ -324,7 +322,7 @@
     "privacy_policy_title": "Политика конфиденциальности",
     "privacy_policy_desc": "Как обрабатываются ваши данные.",
     "privacy_policy_open": "Открыть",
-    "about_credits": "Vojo создан на открытом ПО — включая matrix-js-sdk (Apache 2.0), Twemoji (CC-BY 4.0) и звуки Material Design (CC-BY 4.0).",
+    "about_credits": "Vojo создан на открытом ПО — включая matrix-js-sdk (Apache 2.0) и Twemoji (CC-BY 4.0).",
     "default_for_new_chats": "По умолчанию для новых чатов",
     "default_for_new_chats_desc": "Уровень уведомлений для новых личных чатов и комнат.",
     "notify_on_mention": "Упоминания",
diff --git a/public/sound/notification.ogg b/public/sound/notification.ogg
deleted file mode 100755
index 93b3a014..00000000
Binary files a/public/sound/notification.ogg and /dev/null differ
diff --git a/public/sound/ring.mp3 b/public/sound/ring.mp3
deleted file mode 100644
index 386cce69..00000000
Binary files a/public/sound/ring.mp3 and /dev/null differ
diff --git a/public/sound/ring.ogg b/public/sound/ring.ogg
deleted file mode 100644
index 48c3f1c2..00000000
Binary files a/public/sound/ring.ogg and /dev/null differ
diff --git a/src/app/features/settings/about/About.tsx b/src/app/features/settings/about/About.tsx
index fa3158c8..c483b071 100644
--- a/src/app/features/settings/about/About.tsx
+++ b/src/app/features/settings/about/About.tsx
@@ -126,9 +126,9 @@ export function About({ requestClose }: AboutProps) {
         />
       </SettingsSection>
 
-      {/* Compact open-source attribution — Twemoji art & Material sounds are
-          CC-BY 4.0 and matrix-js-sdk is Apache 2.0, all of which require
-          attribution, so one quiet line stays in place of the old credits. */}
+      {/* Compact open-source attribution — Twemoji art is CC-BY 4.0 and
+          matrix-js-sdk is Apache 2.0, both of which require attribution, so one
+          quiet line stays in place of the old credits. */}
       <Text size="T200" priority="400" align="Center" style={{ opacity: 0.55 }}>
         {t('Settings.about_credits')}
       </Text>
diff --git a/src/app/features/settings/notifications/SystemNotification.tsx b/src/app/features/settings/notifications/SystemNotification.tsx
index 515fa27e..839b0e74 100644
--- a/src/app/features/settings/notifications/SystemNotification.tsx
+++ b/src/app/features/settings/notifications/SystemNotification.tsx
@@ -93,10 +93,6 @@ function PushNotification() {
 
 export function SystemNotification() {
   const { t } = useTranslation();
-  const [isNotificationSounds, setIsNotificationSounds] = useSetting(
-    settingsAtom,
-    'isNotificationSounds'
-  );
   const [inviteSpamFilter, setInviteSpamFilter] = useSetting(settingsAtom, 'inviteSpamFilter');
   // Gate the push row at the call site: PushNotification renders null when push
   // is unavailable, and SettingsSection's `filter(Boolean)` can only drop
@@ -107,11 +103,6 @@ export function SystemNotification() {
   return (
     <SettingsSection label={t('Settings.system')}>
       {pushStatus !== 'unavailable' && <PushNotification />}
-      <SettingTile
-        title={t('Settings.notification_sound')}
-        description={t('Settings.notification_sound_desc')}
-        after={<Switch value={isNotificationSounds} onChange={setIsNotificationSounds} />}
-      />
       <SettingTile
         title={t('Settings.invite_spam_filter')}
         description={t('Settings.invite_spam_filter_desc')}
diff --git a/src/app/pages/IncomingCallStripRenderer.tsx b/src/app/pages/IncomingCallStripRenderer.tsx
index e2f8648e..6ad9c2d8 100644
--- a/src/app/pages/IncomingCallStripRenderer.tsx
+++ b/src/app/pages/IncomingCallStripRenderer.tsx
@@ -1,94 +1,44 @@
-// Top-level renderer for incoming DM call strips + ringtone audio.
+// Top-level renderer for incoming DM call strips.
 //
 // Mounted in Router.tsx inside `CallEmbedProvider`, rendered right before
 // `CallStatusRenderer` so the strip stacks above the in-call pill.
 //
-// IncomingCallStripRenderer is platform-agnostic: if JS knows about an incoming
-// ring, we render the in-app strip. On Android the native FCM service decides
-// independently whether to surface a system CallStyle notification; when the
-// app is foregrounded it suppresses that banner, so strip render itself does
-// not need to mirror foreground policy in JS.
-//
-// Ring audio mirrors foreground policy on Android — gated on `appActive`
-// so the native CallStyle ringtone owns UX in background and the JS
-// <audio> doesn't double-ring during the grace window after backgrounding
-// while the WebView still processes /sync. On web / iOS there is no
-// native ring surface, so audio plays regardless of visibility.
-//
-// Known gap: if the browser blocks `audio.play()` (cold page load, no user
-// gesture yet), the ring is silent — strip is still visible but user may
-// miss it. Fallback (click-to-enable, pulsing animation, Web Notifications)
-// is Phase 3 polish.
+// Visual-only: if JS knows about an incoming ring we render the in-app strip.
+// The alert *sound* is owned entirely by the system — on Android the native FCM
+// service raises a CallStyle notification with the default system ringtone +
+// vibration (see VojoFirebaseMessagingService / the `vojo_calls_v2` channel).
+// Web / desktop have no system ring surface, so the strip is silent there by
+// design — Vojo ships no bundled ringtone.
 
-import React, { useEffect, useRef } from 'react';
+import React from 'react';
 import { useAtomValue } from 'jotai';
 import { incomingCallsAtom } from '../state/incomingCalls';
 import { useMatrixClient } from '../hooks/useMatrixClient';
-import { useAppActive } from '../hooks/useAppActive';
 import { IncomingCallStrip } from '../features/call-status';
 import { getIncomingCallKey } from '../utils/rtcNotification';
-import { isAndroidPlatform } from '../utils/capacitor';
-// eslint-disable-next-line import/no-relative-packages
-import RingSoundOgg from '../../../public/sound/ring.ogg';
-// eslint-disable-next-line import/no-relative-packages
-import RingSoundMp3 from '../../../public/sound/ring.mp3';
 
 export function IncomingCallStripRenderer() {
   const mx = useMatrixClient();
   const incoming = useAtomValue(incomingCallsAtom);
-  const audioRef = useRef<HTMLAudioElement>(null);
-  // Foreground/background signal — shared `useAppActive` registers a
-  // single Capacitor App.pause/resume listener (Android+iOS) and
-  // App.appStateChange (web). Used only to gate Android ring audio
-  // below; iOS / web never read the value because they have no native
-  // ring surface.
-  const appActive = useAppActive();
 
   const hasIncoming = incoming.size > 0;
-
-  useEffect(() => {
-    const audio = audioRef.current;
-    if (!audio) return;
-    // Platform split on the audio gate:
-    // - Android: gate on appActive. When backgrounded the native CallStyle
-    //   ringtone (via vojo_calls_v2 channel) takes over, so JS audio must
-    //   stop to avoid double-ring.
-    // - web / iOS: no native fallback exists. Gating on visibility here
-    //   silenced the only ring source whenever the user switched tabs —
-    //   user-reported regression. Keep audio playing regardless of
-    //   visibility on non-Android platforms.
-    const platformGatedActive = isAndroidPlatform() ? appActive : true;
-    if (hasIncoming && platformGatedActive) {
-      audio.currentTime = 0;
-      audio.play().catch(() => {
-        // autoplay blocked — strip UI still visible
-      });
-    } else {
-      audio.pause();
-    }
-  }, [hasIncoming, appActive]);
+  if (!hasIncoming) return null;
 
   const entries = Array.from(incoming.values());
 
   return (
     <>
-      {/* eslint-disable-next-line jsx-a11y/media-has-caption */}
-      <audio ref={audioRef} loop preload="auto" style={{ display: 'none' }}>
-        <source src={RingSoundOgg} type="audio/ogg" />
-        <source src={RingSoundMp3} type="audio/mpeg" />
-      </audio>
-      {hasIncoming &&
-        entries.map((call) => {
-          const room = mx.getRoom(call.roomId);
-          if (!room) return null;
-          return (
-            <IncomingCallStrip
-              key={getIncomingCallKey(call.callId, call.roomId)}
-              call={call}
-              room={room}
-            />
-          );
-        })}
+      {entries.map((call) => {
+        const room = mx.getRoom(call.roomId);
+        if (!room) return null;
+        return (
+          <IncomingCallStrip
+            key={getIncomingCallKey(call.callId, call.roomId)}
+            call={call}
+            room={room}
+          />
+        );
+      })}
     </>
   );
 }
diff --git a/src/app/pages/client/ClientNonUIFeatures.tsx b/src/app/pages/client/ClientNonUIFeatures.tsx
index b5fdc813..48d96751 100644
--- a/src/app/pages/client/ClientNonUIFeatures.tsx
+++ b/src/app/pages/client/ClientNonUIFeatures.tsx
@@ -1,18 +1,12 @@
 import { useAtomValue } from 'jotai';
-import React, { ReactNode, useCallback, useEffect, useRef } from 'react';
-import { RoomEvent, RoomEventHandlerMap } from 'matrix-js-sdk';
-import { roomToUnreadAtom, unreadEqual, unreadInfoToUnread } from '../../state/room/roomToUnread';
+import React, { ReactNode, useEffect } from 'react';
+import { roomToUnreadAtom } from '../../state/room/roomToUnread';
 import LogoSVG from '../../../../public/res/svg/vojo.svg';
 import LogoUnreadSVG from '../../../../public/res/svg/vojo-unread.svg';
 import LogoHighlightSVG from '../../../../public/res/svg/vojo-highlight.svg';
-import NotificationSound from '../../../../public/sound/notification.ogg';
 import { setFavicon } from '../../utils/dom';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
-import { useMatrixClient } from '../../hooks/useMatrixClient';
-import { getNotificationType, getUnreadInfo, isNotificationEvent } from '../../utils/room';
-import { NotificationType, UnreadInfo } from '../../../types/matrix/room';
-import { useSelectedRoom } from '../../hooks/router/useSelectedRoom';
 import { usePushNotificationsLifecycle } from '../../hooks/usePushNotifications';
 import { PushPermissionPrompt } from '../../components/push-permission-prompt';
 import { FullScreenIntentPrompt } from '../../components/full-screen-intent-prompt';
@@ -69,77 +63,6 @@ function FaviconUpdater() {
   return null;
 }
 
-// OS notifications are exclusively owned by the Service Worker push pipeline
-// (see src/sw.ts). This component only owns the in-tab sound + dedup cache —
-// the timeline listener fires on any notifiable event and plays a sound when
-// the tab is focused / the event isn't for the currently-open room. Push and
-// in-app are one channel now; a push-less build simply gets no OS banner.
-function MessageNotifications() {
-  const audioRef = useRef<HTMLAudioElement>(null);
-  const unreadCacheRef = useRef<Map<string, UnreadInfo>>(new Map());
-  const mx = useMatrixClient();
-  const [notificationSound] = useSetting(settingsAtom, 'isNotificationSounds');
-
-  const selectedRoomId = useSelectedRoom();
-
-  const playSound = useCallback(() => {
-    const audioElement = audioRef.current;
-    audioElement?.play();
-  }, []);
-
-  useEffect(() => {
-    const handleTimelineEvent: RoomEventHandlerMap[RoomEvent.Timeline] = (
-      mEvent,
-      room,
-      toStartOfTimeline,
-      removed,
-      data
-    ) => {
-      if (mx.getSyncState() !== 'SYNCING') return;
-      if (document.hasFocus() && selectedRoomId === room?.roomId) return;
-      if (
-        !room ||
-        !data.liveEvent ||
-        room.isSpaceRoom() ||
-        !isNotificationEvent(mEvent) ||
-        getNotificationType(mx, room.roomId) === NotificationType.Mute
-      ) {
-        return;
-      }
-
-      const sender = mEvent.getSender();
-      const eventId = mEvent.getId();
-      if (!sender || !eventId || mEvent.getSender() === mx.getUserId()) return;
-      const unreadInfo = getUnreadInfo(room);
-      const cachedUnreadInfo = unreadCacheRef.current.get(room.roomId);
-      unreadCacheRef.current.set(room.roomId, unreadInfo);
-
-      if (unreadInfo.total === 0) return;
-      if (
-        cachedUnreadInfo &&
-        unreadEqual(unreadInfoToUnread(cachedUnreadInfo), unreadInfoToUnread(unreadInfo))
-      ) {
-        return;
-      }
-
-      if (notificationSound) {
-        playSound();
-      }
-    };
-    mx.on(RoomEvent.Timeline, handleTimelineEvent);
-    return () => {
-      mx.removeListener(RoomEvent.Timeline, handleTimelineEvent);
-    };
-  }, [mx, notificationSound, playSound, selectedRoomId]);
-
-  return (
-    // eslint-disable-next-line jsx-a11y/media-has-caption
-    <audio ref={audioRef} style={{ display: 'none' }}>
-      <source src={NotificationSound} type="audio/ogg" />
-    </audio>
-  );
-}
-
 type ClientNonUIFeaturesProps = {
   children: ReactNode;
 };
@@ -165,7 +88,6 @@ export function ClientNonUIFeatures({ children }: ClientNonUIFeaturesProps) {
       <SystemEmojiFeature />
       <PageZoomFeature />
       <FaviconUpdater />
-      <MessageNotifications />
       <PushNotificationsFeature />
       <PushPermissionPrompt />
       <FullScreenIntentPrompt />
diff --git a/src/app/state/settings.ts b/src/app/state/settings.ts
index 9fae16ee..4bd8137c 100644
--- a/src/app/state/settings.ts
+++ b/src/app/state/settings.ts
@@ -20,7 +20,6 @@ export interface Settings {
   mediaAutoLoad: boolean;
   urlPreview: boolean;
 
-  isNotificationSounds: boolean;
   inviteSpamFilter: boolean;
 
   developerTools: boolean;
@@ -32,6 +31,7 @@ const DAWN_MIGRATION_KEY = 'dawn-redesign-v1';
 const P3C_CLEANUP_KEY = 'dawn-p3c-cleanup';
 const SYSTEM_TIME_FORMAT_CLEANUP_KEY = 'system-time-format-cleanup';
 const ORPHAN_SETTINGS_CLEANUP_KEY = 'dawn-orphan-settings-cleanup';
+const NOTIFICATION_SOUND_CLEANUP_KEY = 'notification-sound-cleanup';
 
 const defaultSettings: Settings = {
   themeId: undefined,
@@ -49,7 +49,6 @@ const defaultSettings: Settings = {
   mediaAutoLoad: true,
   urlPreview: true,
 
-  isNotificationSounds: true,
   inviteSpamFilter: true,
 
   developerTools: false,
@@ -137,6 +136,20 @@ export const getSettings = (): Settings => {
     setSettings(merged);
   }
 
+  // Notification-sound sweep: the bundled in-app alert sounds (the Cinny
+  // `notification.ogg` message chime + the DM-call `ring.*`) are gone — alerts
+  // are owned by the system now (Android native channels, web push). Drop the
+  // orphan `isNotificationSounds` toggle from existing users' persisted JSON.
+  if (!merged.migrationsApplied?.[NOTIFICATION_SOUND_CLEANUP_KEY]) {
+    const orphan = merged as unknown as Record<string, unknown>;
+    delete orphan.isNotificationSounds;
+    merged.migrationsApplied = {
+      ...(merged.migrationsApplied ?? {}),
+      [NOTIFICATION_SOUND_CLEANUP_KEY]: true,
+    };
+    setSettings(merged);
+  }
+
   return merged;
 };
 
diff --git a/src/sw.ts b/src/sw.ts
index f97a6310..626372f3 100644
--- a/src/sw.ts
+++ b/src/sw.ts
@@ -759,10 +759,10 @@ self.addEventListener('push', (event: PushEvent) => {
         }
       }
 
-      // Foreground dedup: a visible Vojo window already surfaces sound +
-      // favicon in-app, so we skip the OS banner for messages and invites.
-      // Calls are an explicit exception — a missed ring is a much higher-cost
-      // failure than a duplicated banner.
+      // Foreground dedup: a visible Vojo window already surfaces the message
+      // in-app (timeline + unread favicon), so we skip the OS banner for
+      // messages and invites. Calls are an explicit exception — a missed ring
+      // is a much higher-cost failure than a duplicated banner.
       if (!isCall && (await hasVisibleClient())) return;
 
       if (isCall) {