diff --git a/apps/calendar/apps/web/src/lib/components/event/EventDetailModal.svelte b/apps/calendar/apps/web/src/lib/components/event/EventDetailModal.svelte
index 2c5334b45..c2c0661a3 100644
--- a/apps/calendar/apps/web/src/lib/components/event/EventDetailModal.svelte
+++ b/apps/calendar/apps/web/src/lib/components/event/EventDetailModal.svelte
@@ -8,6 +8,7 @@
 	import * as api from '$lib/api/events';
 	import { format, parseISO } from 'date-fns';
 	import { de } from 'date-fns/locale';
+	import { EventDetailSkeleton } from '$lib/components/skeletons';
 
 	interface Props {
 		eventId: string;
@@ -147,10 +148,7 @@
 <div class="modal-backdrop" onclick={handleBackdropClick}>
 	<div class="modal-container" role="dialog" aria-modal="true" aria-labelledby="modal-title">
 		{#if loading}
-			<div class="modal-loading">
-				<div class="spinner"></div>
-				<p>Laden...</p>
-			</div>
+			<EventDetailSkeleton />
 		{:else if event}
 			<div class="modal-header">
 				<h2 id="modal-title" class="modal-title">
@@ -476,31 +474,6 @@
 		}
 	}
 
-	.modal-loading {
-		display: flex;
-		flex-direction: column;
-		align-items: center;
-		justify-content: center;
-		padding: 3rem;
-		gap: 1rem;
-		color: hsl(var(--color-muted-foreground));
-	}
-
-	.spinner {
-		width: 2rem;
-		height: 2rem;
-		border: 3px solid hsl(var(--color-border));
-		border-top-color: hsl(var(--color-primary));
-		border-radius: 50%;
-		animation: spin 1s linear infinite;
-	}
-
-	@keyframes spin {
-		to {
-			transform: rotate(360deg);
-		}
-	}
-
 	.modal-header {
 		display: flex;
 		align-items: center;
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/AgendaSkeleton.svelte b/apps/calendar/apps/web/src/lib/components/skeletons/AgendaSkeleton.svelte
new file mode 100644
index 000000000..ca4b77da6
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/AgendaSkeleton.svelte
@@ -0,0 +1,43 @@
+<script lang="ts">
+	/**
+	 * AgendaSkeleton - Skeleton for agenda page event list
+	 * Shows date groups with event items
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div class="space-y-6" role="status" aria-label="Termine werden geladen...">
+	<!-- Date Groups -->
+	{#each Array(4) as _, groupIndex}
+		<div class="space-y-2" style="opacity: {Math.max(0.4, 1 - groupIndex * 0.15)}">
+			<!-- Date Header -->
+			<div class="px-2">
+				<SkeletonBox width="140px" height="14px" borderRadius="4px" />
+			</div>
+
+			<!-- Event Items -->
+			{#each Array(groupIndex === 0 ? 3 : 2) as _, eventIndex}
+				<div
+					class="bg-card rounded-xl p-4 flex gap-4"
+					style="opacity: {Math.max(0.5, 1 - eventIndex * 0.15)}"
+				>
+					<!-- Color Bar -->
+					<SkeletonBox width="4px" height="48px" borderRadius="2px" />
+
+					<!-- Event Content -->
+					<div class="flex-1 space-y-2">
+						<!-- Time -->
+						<SkeletonBox width="90px" height="12px" borderRadius="4px" />
+						<!-- Title -->
+						<SkeletonBox width="70%" height="16px" borderRadius="4px" />
+						<!-- Location (occasionally) -->
+						{#if eventIndex === 0}
+							<SkeletonBox width="50%" height="14px" borderRadius="4px" />
+						{/if}
+					</div>
+				</div>
+			{/each}
+		</div>
+	{/each}
+</div>
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte b/apps/calendar/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte
new file mode 100644
index 000000000..a46eb0b57
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte
@@ -0,0 +1,55 @@
+<script lang="ts">
+	/**
+	 * AppLoadingSkeleton - Full-page loading skeleton for app initialization
+	 * Replaces spinner with calendar-themed skeleton layout
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div
+	class="flex min-h-screen items-center justify-center bg-background"
+	role="status"
+	aria-label="Kalender wird geladen..."
+>
+	<div class="w-full max-w-md px-6 space-y-8">
+		<!-- Logo/Header Area -->
+		<div class="flex flex-col items-center gap-4">
+			<SkeletonBox width="64px" height="64px" borderRadius="16px" />
+			<SkeletonBox width="180px" height="24px" borderRadius="8px" />
+		</div>
+
+		<!-- Calendar Preview Skeleton -->
+		<div class="bg-card rounded-xl p-4 space-y-4">
+			<!-- Mini Calendar Header -->
+			<div class="flex items-center justify-between">
+				<SkeletonBox width="120px" height="20px" />
+				<div class="flex gap-2">
+					<SkeletonBox width="32px" height="32px" borderRadius="8px" />
+					<SkeletonBox width="32px" height="32px" borderRadius="8px" />
+				</div>
+			</div>
+
+			<!-- Weekday Headers -->
+			<div class="grid grid-cols-7 gap-1">
+				{#each Array(7) as _}
+					<SkeletonBox width="100%" height="24px" borderRadius="4px" />
+				{/each}
+			</div>
+
+			<!-- Calendar Days Grid -->
+			<div class="grid grid-cols-7 gap-1">
+				{#each Array(35) as _, i}
+					<div style="opacity: {Math.max(0.3, 1 - (i % 7) * 0.08)}">
+						<SkeletonBox width="100%" height="32px" borderRadius="8px" />
+					</div>
+				{/each}
+			</div>
+		</div>
+
+		<!-- Loading Indicator -->
+		<div class="flex justify-center">
+			<SkeletonBox width="140px" height="16px" borderRadius="4px" />
+		</div>
+	</div>
+</div>
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/CalendarViewSkeleton.svelte b/apps/calendar/apps/web/src/lib/components/skeletons/CalendarViewSkeleton.svelte
new file mode 100644
index 000000000..d48b95c7f
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/CalendarViewSkeleton.svelte
@@ -0,0 +1,149 @@
+<script lang="ts">
+	/**
+	 * CalendarViewSkeleton - Skeleton for the main calendar week view
+	 * Shows a week grid with time slots and placeholder events
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+
+	// 7 days of the week
+	const days = Array(7);
+	// Show hours from 8 to 18 (working hours)
+	const hours = Array(10);
+</script>
+
+<div class="calendar-skeleton" role="status" aria-label="Kalender wird geladen...">
+	<!-- Header with day names -->
+	<div class="calendar-header">
+		<!-- Time column spacer -->
+		<div class="time-spacer"></div>
+
+		<!-- Day headers -->
+		{#each days as _, dayIndex}
+			<div class="day-header" style="opacity: {Math.max(0.5, 1 - dayIndex * 0.05)}">
+				<SkeletonBox width="32px" height="14px" borderRadius="4px" />
+				<SkeletonBox width="28px" height="28px" borderRadius="50%" />
+			</div>
+		{/each}
+	</div>
+
+	<!-- Calendar grid -->
+	<div class="calendar-grid">
+		<!-- Time column -->
+		<div class="time-column">
+			{#each hours as _, hourIndex}
+				<div class="time-slot" style="opacity: {Math.max(0.4, 1 - hourIndex * 0.05)}">
+					<SkeletonBox width="36px" height="12px" borderRadius="4px" />
+				</div>
+			{/each}
+		</div>
+
+		<!-- Day columns -->
+		{#each days as _, dayIndex}
+			<div class="day-column" style="opacity: {Math.max(0.6, 1 - dayIndex * 0.04)}">
+				{#each hours as _, hourIndex}
+					<div class="hour-cell"></div>
+				{/each}
+
+				<!-- Placeholder events -->
+				{#if dayIndex === 1}
+					<div class="event-placeholder" style="top: 10%; height: 15%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+				{/if}
+				{#if dayIndex === 2}
+					<div class="event-placeholder" style="top: 30%; height: 10%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+				{/if}
+				{#if dayIndex === 3}
+					<div class="event-placeholder" style="top: 50%; height: 20%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+				{/if}
+				{#if dayIndex === 4}
+					<div class="event-placeholder" style="top: 20%; height: 8%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+					<div class="event-placeholder" style="top: 60%; height: 12%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+				{/if}
+				{#if dayIndex === 5}
+					<div class="event-placeholder" style="top: 40%; height: 15%;">
+						<SkeletonBox width="100%" height="100%" borderRadius="6px" />
+					</div>
+				{/if}
+			</div>
+		{/each}
+	</div>
+</div>
+
+<style>
+	.calendar-skeleton {
+		display: flex;
+		flex-direction: column;
+		height: 100%;
+		min-height: 600px;
+		overflow: hidden;
+	}
+
+	.calendar-header {
+		display: flex;
+		border-bottom: 1px solid hsl(var(--color-border) / 0.5);
+		padding: 0.75rem 0;
+	}
+
+	.time-spacer {
+		width: 60px;
+		flex-shrink: 0;
+	}
+
+	.day-header {
+		flex: 1;
+		display: flex;
+		flex-direction: column;
+		align-items: center;
+		gap: 0.5rem;
+		padding: 0.25rem;
+	}
+
+	.calendar-grid {
+		display: flex;
+		flex: 1;
+		overflow: hidden;
+	}
+
+	.time-column {
+		width: 60px;
+		flex-shrink: 0;
+		display: flex;
+		flex-direction: column;
+	}
+
+	.time-slot {
+		height: 60px;
+		display: flex;
+		align-items: flex-start;
+		justify-content: flex-end;
+		padding-right: 0.5rem;
+		padding-top: 0.25rem;
+	}
+
+	.day-column {
+		flex: 1;
+		position: relative;
+		border-left: 1px solid hsl(var(--color-border) / 0.3);
+	}
+
+	.hour-cell {
+		height: 60px;
+		border-bottom: 1px solid hsl(var(--color-border) / 0.2);
+	}
+
+	.event-placeholder {
+		position: absolute;
+		left: 4px;
+		right: 4px;
+	}
+</style>
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/EventDetailSkeleton.svelte b/apps/calendar/apps/web/src/lib/components/skeletons/EventDetailSkeleton.svelte
new file mode 100644
index 000000000..c0a68389a
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/EventDetailSkeleton.svelte
@@ -0,0 +1,75 @@
+<script lang="ts">
+	/**
+	 * EventDetailSkeleton - Skeleton for event detail modal
+	 * Matches the layout of EventDetailModal
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div class="p-6 space-y-5" role="status" aria-label="Termin wird geladen...">
+	<!-- Header with Title and Actions -->
+	<div class="flex items-start justify-between gap-4">
+		<SkeletonBox width="60%" height="24px" borderRadius="6px" />
+		<div class="flex gap-2 flex-shrink-0">
+			<SkeletonBox width="32px" height="32px" borderRadius="8px" />
+			<SkeletonBox width="32px" height="32px" borderRadius="8px" />
+		</div>
+	</div>
+
+	<!-- Calendar Row -->
+	<div class="flex items-start gap-3">
+		<SkeletonBox width="20px" height="20px" borderRadius="50%" />
+		<div class="flex flex-col gap-1.5 flex-1">
+			<SkeletonBox width="60px" height="12px" borderRadius="4px" />
+			<SkeletonBox width="120px" height="16px" borderRadius="4px" />
+		</div>
+	</div>
+
+	<!-- Time Row -->
+	<div class="flex items-start gap-3">
+		<SkeletonBox width="20px" height="20px" borderRadius="4px" />
+		<div class="flex flex-col gap-1.5 flex-1">
+			<SkeletonBox width="40px" height="12px" borderRadius="4px" />
+			<SkeletonBox width="200px" height="16px" borderRadius="4px" />
+		</div>
+	</div>
+
+	<!-- Location Row -->
+	<div class="flex items-start gap-3">
+		<SkeletonBox width="20px" height="20px" borderRadius="4px" />
+		<div class="flex flex-col gap-1.5 flex-1">
+			<SkeletonBox width="40px" height="12px" borderRadius="4px" />
+			<SkeletonBox width="160px" height="16px" borderRadius="4px" />
+		</div>
+	</div>
+
+	<!-- Description Row -->
+	<div class="flex items-start gap-3">
+		<SkeletonBox width="20px" height="20px" borderRadius="4px" />
+		<div class="flex flex-col gap-1.5 flex-1">
+			<SkeletonBox width="80px" height="12px" borderRadius="4px" />
+			<div class="space-y-2">
+				<SkeletonBox width="100%" height="14px" borderRadius="4px" />
+				<SkeletonBox width="90%" height="14px" borderRadius="4px" />
+				<SkeletonBox width="70%" height="14px" borderRadius="4px" />
+			</div>
+		</div>
+	</div>
+
+	<!-- Attendees Row -->
+	<div class="flex items-start gap-3">
+		<SkeletonBox width="20px" height="20px" borderRadius="4px" />
+		<div class="flex flex-col gap-2 flex-1">
+			<SkeletonBox width="100px" height="12px" borderRadius="4px" />
+			<div class="flex flex-col gap-1.5">
+				{#each Array(3) as _, i}
+					<div class="flex items-center gap-2" style="opacity: {Math.max(0.5, 1 - i * 0.2)}">
+						<SkeletonBox width="140px" height="14px" borderRadius="4px" />
+						<SkeletonBox width="24px" height="18px" borderRadius="4px" />
+					</div>
+				{/each}
+			</div>
+		</div>
+	</div>
+</div>
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/RedirectSkeleton.svelte b/apps/calendar/apps/web/src/lib/components/skeletons/RedirectSkeleton.svelte
new file mode 100644
index 000000000..db8130ed8
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/RedirectSkeleton.svelte
@@ -0,0 +1,16 @@
+<script lang="ts">
+	/**
+	 * RedirectSkeleton - Simple centered skeleton for redirect pages
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div
+	class="flex flex-col items-center justify-center min-h-[50vh] gap-4"
+	role="status"
+	aria-label="Weiterleitung..."
+>
+	<SkeletonBox width="48px" height="48px" borderRadius="50%" />
+	<SkeletonBox width="100px" height="16px" borderRadius="4px" />
+</div>
diff --git a/apps/calendar/apps/web/src/lib/components/skeletons/index.ts b/apps/calendar/apps/web/src/lib/components/skeletons/index.ts
new file mode 100644
index 000000000..032422277
--- /dev/null
+++ b/apps/calendar/apps/web/src/lib/components/skeletons/index.ts
@@ -0,0 +1,21 @@
+/**
+ * Calendar App Skeleton Components
+ *
+ * App-specific skeleton loaders that match the exact layout of calendar components.
+ * Built on top of @manacore/shared-ui skeleton primitives.
+ */
+
+// App Loading Skeleton
+export { default as AppLoadingSkeleton } from './AppLoadingSkeleton.svelte';
+
+// Agenda Skeleton
+export { default as AgendaSkeleton } from './AgendaSkeleton.svelte';
+
+// Event Detail Skeleton
+export { default as EventDetailSkeleton } from './EventDetailSkeleton.svelte';
+
+// Redirect Skeleton
+export { default as RedirectSkeleton } from './RedirectSkeleton.svelte';
+
+// Calendar View Skeleton
+export { default as CalendarViewSkeleton } from './CalendarViewSkeleton.svelte';
diff --git a/apps/calendar/apps/web/src/routes/(app)/+page.svelte b/apps/calendar/apps/web/src/routes/(app)/+page.svelte
index 029f78743..3918aab21 100644
--- a/apps/calendar/apps/web/src/routes/(app)/+page.svelte
+++ b/apps/calendar/apps/web/src/routes/(app)/+page.svelte
@@ -18,6 +18,7 @@
 	import CalendarSidebar from '$lib/components/calendar/CalendarSidebar.svelte';
 	import QuickEventOverlay from '$lib/components/event/QuickEventOverlay.svelte';
 	import EventDetailModal from '$lib/components/event/EventDetailModal.svelte';
+	import { CalendarViewSkeleton } from '$lib/components/skeletons';
 	import { format, addMinutes } from 'date-fns';
 	import { de } from 'date-fns/locale';
 
@@ -166,7 +167,9 @@
 		<CalendarHeader />
 
 		<div class="calendar-content">
-			{#if viewStore.viewType === 'day'}
+			{#if !initialized}
+				<CalendarViewSkeleton />
+			{:else if viewStore.viewType === 'day'}
 				<DayView onQuickCreate={handleQuickCreate} />
 			{:else if viewStore.viewType === '5day'}
 				<MultiDayView dayCount={5} onQuickCreate={handleQuickCreate} />
diff --git a/apps/calendar/apps/web/src/routes/(app)/agenda/+page.svelte b/apps/calendar/apps/web/src/routes/(app)/agenda/+page.svelte
index 6ae682d89..b7c80f940 100644
--- a/apps/calendar/apps/web/src/routes/(app)/agenda/+page.svelte
+++ b/apps/calendar/apps/web/src/routes/(app)/agenda/+page.svelte
@@ -6,6 +6,7 @@
 	import { calendarsStore } from '$lib/stores/calendars.svelte';
 	import { format, parseISO, isToday, isTomorrow, addDays, startOfDay, endOfDay } from 'date-fns';
 	import { de } from 'date-fns/locale';
+	import { AgendaSkeleton } from '$lib/components/skeletons';
 
 	let loading = $state(true);
 
@@ -81,7 +82,7 @@
 	</header>
 
 	{#if loading}
-		<div class="loading">Laden...</div>
+		<AgendaSkeleton />
 	{:else if groupedEvents.length === 0}
 		<div class="empty-state card">
 			<p>Keine Termine in den nächsten 30 Tagen</p>
@@ -153,12 +154,6 @@
 		margin: 0;
 	}
 
-	.loading {
-		text-align: center;
-		padding: 2rem;
-		color: hsl(var(--color-muted-foreground));
-	}
-
 	.empty-state {
 		text-align: center;
 		padding: 3rem;
diff --git a/apps/calendar/apps/web/src/routes/(app)/event/[id]/+page.svelte b/apps/calendar/apps/web/src/routes/(app)/event/[id]/+page.svelte
index b167c8ba6..9cb62d949 100644
--- a/apps/calendar/apps/web/src/routes/(app)/event/[id]/+page.svelte
+++ b/apps/calendar/apps/web/src/routes/(app)/event/[id]/+page.svelte
@@ -2,6 +2,7 @@
 	import { page } from '$app/stores';
 	import { goto } from '$app/navigation';
 	import { onMount } from 'svelte';
+	import { RedirectSkeleton } from '$lib/components/skeletons';
 
 	// Redirect to main calendar page with event modal
 	onMount(() => {
@@ -10,34 +11,4 @@
 	});
 </script>
 
-<div class="redirect-loading">
-	<div class="spinner"></div>
-	<p>Laden...</p>
-</div>
-
-<style>
-	.redirect-loading {
-		display: flex;
-		flex-direction: column;
-		align-items: center;
-		justify-content: center;
-		min-height: 50vh;
-		gap: 1rem;
-		color: hsl(var(--color-muted-foreground));
-	}
-
-	.spinner {
-		width: 2rem;
-		height: 2rem;
-		border: 3px solid hsl(var(--color-border));
-		border-top-color: hsl(var(--color-primary));
-		border-radius: 50%;
-		animation: spin 1s linear infinite;
-	}
-
-	@keyframes spin {
-		to {
-			transform: rotate(360deg);
-		}
-	}
-</style>
+<RedirectSkeleton />
diff --git a/apps/calendar/apps/web/src/routes/(app)/event/new/+page.svelte b/apps/calendar/apps/web/src/routes/(app)/event/new/+page.svelte
index bf7f0e3f5..ff5ff819d 100644
--- a/apps/calendar/apps/web/src/routes/(app)/event/new/+page.svelte
+++ b/apps/calendar/apps/web/src/routes/(app)/event/new/+page.svelte
@@ -7,7 +7,7 @@
 	import { calendarsStore } from '$lib/stores/calendars.svelte';
 	import { toast } from '$lib/stores/toast';
 	import EventForm from '$lib/components/event/EventForm.svelte';
-	import type { CreateEventInput } from '@calendar/shared';
+	import type { CreateEventInput, UpdateEventInput } from '@calendar/shared';
 	import { addHours, parseISO } from 'date-fns';
 
 	let initialStart = $state<Date | null>(null);
@@ -25,8 +25,9 @@
 		}
 	});
 
-	async function handleSave(data: CreateEventInput) {
-		const result = await eventsStore.createEvent(data);
+	async function handleSave(data: CreateEventInput | UpdateEventInput) {
+		// In create mode, data is always CreateEventInput
+		const result = await eventsStore.createEvent(data as CreateEventInput);
 
 		if (result.error) {
 			toast.error(`Fehler beim Erstellen: ${result.error.message}`);
diff --git a/apps/calendar/apps/web/src/routes/+layout.svelte b/apps/calendar/apps/web/src/routes/+layout.svelte
index 6cbb7c5d9..bf247f9cb 100644
--- a/apps/calendar/apps/web/src/routes/+layout.svelte
+++ b/apps/calendar/apps/web/src/routes/+layout.svelte
@@ -4,6 +4,7 @@
 	import { theme } from '$lib/stores/theme';
 	import { authStore } from '$lib/stores/auth.svelte';
 	import ToastContainer from '$lib/components/ToastContainer.svelte';
+	import { AppLoadingSkeleton } from '$lib/components/skeletons';
 
 	let { children } = $props();
 
@@ -23,14 +24,7 @@
 <ToastContainer />
 
 {#if loading}
-	<div class="flex min-h-screen items-center justify-center bg-background">
-		<div class="text-center">
-			<div
-				class="mb-4 inline-block h-12 w-12 animate-spin rounded-full border-4 border-solid border-primary border-r-transparent"
-			></div>
-			<p class="text-muted-foreground">Laden...</p>
-		</div>
-	</div>
+	<AppLoadingSkeleton />
 {:else}
 	<div class="min-h-screen bg-background text-foreground">
 		{@render children()}
diff --git a/apps/clock/apps/web/src/lib/components/skeletons/AlarmsSkeleton.svelte b/apps/clock/apps/web/src/lib/components/skeletons/AlarmsSkeleton.svelte
new file mode 100644
index 000000000..1599f1a4c
--- /dev/null
+++ b/apps/clock/apps/web/src/lib/components/skeletons/AlarmsSkeleton.svelte
@@ -0,0 +1,27 @@
+<script lang="ts">
+	/**
+	 * AlarmsSkeleton - Skeleton for alarms grid
+	 * Shows placeholder tiles for alarm times
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div role="status" aria-label="Wecker werden geladen...">
+	<!-- Alarm Preset Grid (matches DEFAULT_ALARM_PRESETS layout) -->
+	<div class="grid grid-cols-4 sm:grid-cols-6 gap-2">
+		{#each Array(12) as _, i}
+			<div
+				class="bg-card rounded-xl p-3 border border-border flex flex-col items-center justify-center"
+				style="opacity: {Math.max(0.4, 1 - i * 0.05)}"
+			>
+				<!-- Time -->
+				<SkeletonBox width="48px" height="24px" borderRadius="4px" />
+				<!-- Label -->
+				<div class="mt-1">
+					<SkeletonBox width="40px" height="10px" borderRadius="4px" />
+				</div>
+			</div>
+		{/each}
+	</div>
+</div>
diff --git a/apps/clock/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte b/apps/clock/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte
new file mode 100644
index 000000000..f67c9e1cf
--- /dev/null
+++ b/apps/clock/apps/web/src/lib/components/skeletons/AppLoadingSkeleton.svelte
@@ -0,0 +1,47 @@
+<script lang="ts">
+	/**
+	 * AppLoadingSkeleton - Full-page loading skeleton for app initialization
+	 * Replaces spinner with clock-themed skeleton layout
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div
+	class="flex min-h-screen items-center justify-center bg-background"
+	role="status"
+	aria-label="App wird geladen..."
+>
+	<div class="w-full max-w-sm px-6 space-y-8">
+		<!-- Clock Icon Area -->
+		<div class="flex flex-col items-center gap-4">
+			<SkeletonBox width="80px" height="80px" borderRadius="50%" />
+			<SkeletonBox width="120px" height="24px" borderRadius="8px" />
+		</div>
+
+		<!-- Time Display Skeleton -->
+		<div class="bg-card rounded-2xl p-6 space-y-4">
+			<!-- Large Time -->
+			<div class="flex justify-center">
+				<SkeletonBox width="200px" height="48px" borderRadius="8px" />
+			</div>
+
+			<!-- Date -->
+			<div class="flex justify-center">
+				<SkeletonBox width="140px" height="16px" borderRadius="4px" />
+			</div>
+
+			<!-- Quick Actions -->
+			<div class="flex justify-center gap-3 pt-2">
+				{#each Array(4) as _, i}
+					<SkeletonBox width="48px" height="48px" borderRadius="12px" />
+				{/each}
+			</div>
+		</div>
+
+		<!-- Loading Text -->
+		<div class="flex justify-center">
+			<SkeletonBox width="100px" height="14px" borderRadius="4px" />
+		</div>
+	</div>
+</div>
diff --git a/apps/clock/apps/web/src/lib/components/skeletons/TimersSkeleton.svelte b/apps/clock/apps/web/src/lib/components/skeletons/TimersSkeleton.svelte
new file mode 100644
index 000000000..6584ff514
--- /dev/null
+++ b/apps/clock/apps/web/src/lib/components/skeletons/TimersSkeleton.svelte
@@ -0,0 +1,47 @@
+<script lang="ts">
+	/**
+	 * TimersSkeleton - Skeleton for active timers grid
+	 * Shows placeholder tiles for timer displays
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div role="status" aria-label="Timer werden geladen...">
+	<!-- Section Header -->
+	<div class="mb-2">
+		<SkeletonBox width="80px" height="12px" borderRadius="4px" />
+	</div>
+
+	<!-- Timer Grid -->
+	<div class="grid grid-cols-2 sm:grid-cols-3 gap-2">
+		{#each Array(4) as _, i}
+			<div
+				class="bg-card rounded-xl p-3 border border-border"
+				style="opacity: {Math.max(0.5, 1 - i * 0.12)}"
+			>
+				<!-- Time + Delete Button Row -->
+				<div class="flex items-start justify-between mb-1">
+					<SkeletonBox width="70px" height="24px" borderRadius="4px" />
+					<SkeletonBox width="14px" height="14px" borderRadius="4px" />
+				</div>
+
+				<!-- Label -->
+				<div class="mb-2">
+					<SkeletonBox width="50px" height="10px" borderRadius="4px" />
+				</div>
+
+				<!-- Progress Bar -->
+				<div class="mb-2">
+					<SkeletonBox width="100%" height="4px" borderRadius="2px" />
+				</div>
+
+				<!-- Control Buttons -->
+				<div class="flex gap-1">
+					<SkeletonBox width="100%" height="28px" borderRadius="6px" />
+					<SkeletonBox width="48px" height="28px" borderRadius="6px" />
+				</div>
+			</div>
+		{/each}
+	</div>
+</div>
diff --git a/apps/clock/apps/web/src/lib/components/skeletons/WorldClockSkeleton.svelte b/apps/clock/apps/web/src/lib/components/skeletons/WorldClockSkeleton.svelte
new file mode 100644
index 000000000..255d7b743
--- /dev/null
+++ b/apps/clock/apps/web/src/lib/components/skeletons/WorldClockSkeleton.svelte
@@ -0,0 +1,36 @@
+<script lang="ts">
+	/**
+	 * WorldClockSkeleton - Skeleton for world clock grid
+	 * Shows placeholder cards for city times
+	 */
+
+	import { SkeletonBox } from '@manacore/shared-ui';
+</script>
+
+<div
+	class="grid gap-4 sm:grid-cols-2 lg:grid-cols-3"
+	role="status"
+	aria-label="Weltuhren werden geladen..."
+>
+	{#each Array(6) as _, i}
+		<div
+			class="bg-card rounded-xl p-4 border border-border"
+			style="opacity: {Math.max(0.4, 1 - i * 0.1)}"
+		>
+			<!-- Day/Night + City Name -->
+			<div class="mb-2 flex items-center gap-2">
+				<SkeletonBox width="32px" height="12px" borderRadius="4px" />
+				<SkeletonBox width="80px" height="14px" borderRadius="4px" />
+			</div>
+
+			<!-- Large Time Display -->
+			<SkeletonBox width="140px" height="40px" borderRadius="6px" />
+
+			<!-- Date and Offset -->
+			<div class="mt-2 flex items-center justify-between">
+				<SkeletonBox width="90px" height="13px" borderRadius="4px" />
+				<SkeletonBox width="36px" height="14px" borderRadius="4px" />
+			</div>
+		</div>
+	{/each}
+</div>
diff --git a/apps/clock/apps/web/src/lib/components/skeletons/index.ts b/apps/clock/apps/web/src/lib/components/skeletons/index.ts
new file mode 100644
index 000000000..dde3d8c5a
--- /dev/null
+++ b/apps/clock/apps/web/src/lib/components/skeletons/index.ts
@@ -0,0 +1,18 @@
+/**
+ * Clock App Skeleton Components
+ *
+ * App-specific skeleton loaders that match the exact layout of clock components.
+ * Built on top of @manacore/shared-ui skeleton primitives.
+ */
+
+// App Loading Skeleton
+export { default as AppLoadingSkeleton } from './AppLoadingSkeleton.svelte';
+
+// World Clock Skeleton
+export { default as WorldClockSkeleton } from './WorldClockSkeleton.svelte';
+
+// Alarms Skeleton
+export { default as AlarmsSkeleton } from './AlarmsSkeleton.svelte';
+
+// Timers Skeleton
+export { default as TimersSkeleton } from './TimersSkeleton.svelte';
diff --git a/apps/clock/apps/web/src/routes/(app)/alarms/+page.svelte b/apps/clock/apps/web/src/routes/(app)/alarms/+page.svelte
index 4275ddf20..16352dabc 100644
--- a/apps/clock/apps/web/src/routes/(app)/alarms/+page.svelte
+++ b/apps/clock/apps/web/src/routes/(app)/alarms/+page.svelte
@@ -7,6 +7,7 @@
 	import { toast } from '$lib/stores/toast';
 	import type { CreateAlarmInput, Alarm } from '@clock/shared';
 	import { ALARM_SOUNDS, DEFAULT_ALARM_PRESETS } from '@clock/shared';
+	import { AlarmsSkeleton } from '$lib/components/skeletons';
 
 	// Quick create form (inline)
 	let newTime = $state('07:00');
@@ -194,11 +195,7 @@
 
 	<!-- Loading State -->
 	{#if alarmsStore.loading}
-		<div class="flex justify-center py-12">
-			<div
-				class="h-8 w-8 animate-spin rounded-full border-4 border-primary border-r-transparent"
-			></div>
-		</div>
+		<AlarmsSkeleton />
 	{:else}
 		<!-- Default Alarm Presets (Grid) -->
 		<div class="alarm-grid">
diff --git a/apps/clock/apps/web/src/routes/(app)/timers/+page.svelte b/apps/clock/apps/web/src/routes/(app)/timers/+page.svelte
index 26754d01e..36b3d05a5 100644
--- a/apps/clock/apps/web/src/routes/(app)/timers/+page.svelte
+++ b/apps/clock/apps/web/src/routes/(app)/timers/+page.svelte
@@ -7,6 +7,7 @@
 	import { authStore } from '$lib/stores/auth.svelte';
 	import { toast } from '$lib/stores/toast';
 	import { QUICK_TIMER_PRESETS, formatDuration } from '@clock/shared';
+	import { TimersSkeleton } from '$lib/components/skeletons';
 
 	// Form state (inline on page)
 	let formMinutes = $state(5);
@@ -219,11 +220,7 @@
 
 	<!-- Loading State -->
 	{#if timersStore.loading}
-		<div class="flex justify-center py-8">
-			<div
-				class="h-6 w-6 animate-spin rounded-full border-2 border-primary border-r-transparent"
-			></div>
-		</div>
+		<TimersSkeleton />
 	{:else if allTimers.length > 0}
 		<!-- Active Timers -->
 		<div>
diff --git a/apps/clock/apps/web/src/routes/(app)/world-clock/+page.svelte b/apps/clock/apps/web/src/routes/(app)/world-clock/+page.svelte
index 62a417b3f..2ce791def 100644
--- a/apps/clock/apps/web/src/routes/(app)/world-clock/+page.svelte
+++ b/apps/clock/apps/web/src/routes/(app)/world-clock/+page.svelte
@@ -7,6 +7,7 @@
 	import { toast } from '$lib/stores/toast';
 	import { POPULAR_TIMEZONES } from '@clock/shared';
 	import WorldMap from '$lib/components/WorldMap.svelte';
+	import { WorldClockSkeleton } from '$lib/components/skeletons';
 
 	// State
 	let showAddModal = $state(false);
@@ -205,11 +206,7 @@
 
 	<!-- World Clock List -->
 	{#if worldClocksStore.loading}
-		<div class="flex justify-center py-12">
-			<div
-				class="h-8 w-8 animate-spin rounded-full border-4 border-primary border-r-transparent"
-			></div>
-		</div>
+		<WorldClockSkeleton />
 	{:else if worldClocksStore.sortedWorldClocks.length === 0}
 		<div class="card py-12 text-center">
 			<p class="text-lg text-muted-foreground">{$_('worldClock.noClocks')}</p>
diff --git a/apps/clock/apps/web/src/routes/+layout.svelte b/apps/clock/apps/web/src/routes/+layout.svelte
index c3276cb38..7236493ea 100644
--- a/apps/clock/apps/web/src/routes/+layout.svelte
+++ b/apps/clock/apps/web/src/routes/+layout.svelte
@@ -6,6 +6,7 @@
 	import { authStore } from '$lib/stores/auth.svelte';
 	import { waitLocale } from '$lib/i18n';
 	import ToastContainer from '$lib/components/ToastContainer.svelte';
+	import { AppLoadingSkeleton } from '$lib/components/skeletons';
 
 	let { children } = $props();
 
@@ -28,14 +29,7 @@
 <ToastContainer />
 
 {#if $isLocaleLoading || loading}
-	<div class="flex min-h-screen items-center justify-center bg-background">
-		<div class="text-center">
-			<div
-				class="mb-4 inline-block h-12 w-12 animate-spin rounded-full border-4 border-solid border-primary border-r-transparent"
-			></div>
-			<p class="text-muted-foreground">Laden...</p>
-		</div>
-	</div>
+	<AppLoadingSkeleton />
 {:else}
 	<div class="min-h-screen bg-background text-foreground">
 		{@render children()}