diff --git a/frontend/src/App.css b/frontend/src/App.css
index c87a311..fc6773c 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -13211,6 +13211,83 @@ html.theme-light .tam-disclaimer     { color: #90a4ae; }
   margin: -8px 0 12px; font-size: 12px; color: var(--text2); line-height: 1.45;
 }
 .app-download-build-status--active { color: #5eb5ff; }
+.app-download-build-progress {
+  margin: 0 0 14px; padding: 12px 14px; border-radius: 12px;
+  border: 1px solid var(--border); background: var(--bg2);
+}
+.app-download-build-progress--active {
+  border-color: color-mix(in srgb, #2196f3 45%, var(--border));
+  background: color-mix(in srgb, #2196f3 8%, var(--bg2));
+}
+.app-download-build-progress--success {
+  border-color: color-mix(in srgb, #22c55e 45%, var(--border));
+  background: color-mix(in srgb, #22c55e 8%, var(--bg2));
+}
+.app-download-build-progress--failed {
+  border-color: color-mix(in srgb, #ef4444 45%, var(--border));
+  background: color-mix(in srgb, #ef4444 8%, var(--bg2));
+}
+.app-download-build-progress-head {
+  display: flex; align-items: center; justify-content: space-between;
+  gap: 10px; flex-wrap: wrap; margin-bottom: 10px;
+}
+.app-download-build-progress-title {
+  display: inline-flex; align-items: center; gap: 8px; font-size: 13px;
+}
+.app-download-build-spinner {
+  width: 14px; height: 14px; border-radius: 50%;
+  border: 2px solid color-mix(in srgb, #2196f3 25%, transparent);
+  border-top-color: #2196f3;
+  animation: tmb-update-spin 0.8s linear infinite;
+}
+.app-download-build-badge {
+  font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 999px;
+  background: color-mix(in srgb, #2196f3 18%, var(--bg));
+  color: #5eb5ff;
+}
+.app-download-build-elapsed { font-size: 11px; color: var(--text3); font-variant-numeric: tabular-nums; }
+.app-download-build-bar {
+  height: 4px; border-radius: 999px; overflow: hidden;
+  background: color-mix(in srgb, var(--text3) 15%, transparent);
+  margin-bottom: 12px;
+}
+.app-download-build-bar-fill {
+  height: 100%; width: 40%; border-radius: inherit;
+  background: linear-gradient(90deg, #2196f3, #5eb5ff);
+  animation: app-download-build-indeterminate 1.4s ease-in-out infinite;
+}
+@keyframes app-download-build-indeterminate {
+  0% { transform: translateX(-120%); }
+  100% { transform: translateX(320%); }
+}
+.app-download-build-steps {
+  list-style: none; margin: 0; padding: 0;
+  display: flex; flex-direction: column; gap: 8px;
+}
+.app-download-build-step {
+  display: flex; align-items: center; gap: 8px;
+  font-size: 12px; color: var(--text3); line-height: 1.4;
+}
+.app-download-build-step.active { color: #5eb5ff; font-weight: 600; }
+.app-download-build-step.done { color: var(--text2); }
+.app-download-build-step-dot {
+  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
+  border: 2px solid color-mix(in srgb, var(--text3) 50%, transparent);
+  background: transparent;
+}
+.app-download-build-step.active .app-download-build-step-dot {
+  border-color: #2196f3; background: #2196f3;
+  box-shadow: 0 0 0 3px color-mix(in srgb, #2196f3 25%, transparent);
+}
+.app-download-build-step.done .app-download-build-step-dot {
+  border-color: #22c55e; background: #22c55e;
+}
+.app-download-build-message {
+  margin: 10px 0 0; font-size: 12px; color: var(--text2); line-height: 1.45;
+}
+.app-download-build-done-note {
+  margin: 8px 0 0; font-size: 12px; color: #4ade80; line-height: 1.45;
+}
 .app-download-build-note, .app-download-build-wait {
   margin: 0 0 12px; font-size: 12px; line-height: 1.5;
 }
diff --git a/frontend/src/components/AppDownloadModal.tsx b/frontend/src/components/AppDownloadModal.tsx
index 7680968..36a38ec 100644
--- a/frontend/src/components/AppDownloadModal.tsx
+++ b/frontend/src/components/AppDownloadModal.tsx
@@ -199,6 +199,114 @@ const PlatformCard: React.FC<{
   );
 };
 
+const BUILD_POLL_MS = 4000;
+
+function formatElapsed(startedAtMs?: number): string {
+  if (startedAtMs == null || !Number.isFinite(startedAtMs)) return '—';
+  const sec = Math.max(0, Math.floor((Date.now() - startedAtMs) / 1000));
+  const m = Math.floor(sec / 60);
+  const s = sec % 60;
+  return m > 0 ? `${m}분 ${s.toString().padStart(2, '0')}초` : `${s}초`;
+}
+
+function buildStatusLabel(status?: string, building?: boolean): string {
+  if (building) return '빌드 진행 중';
+  switch (status) {
+    case 'building': return '빌드 진행 중';
+    case 'queued': return 'Jenkins 큐 대기';
+    case 'success': return '빌드 성공';
+    case 'failure': return '빌드 실패';
+    case 'aborted': return '빌드 중단';
+    case 'error': return '상태 조회 오류';
+    case 'disabled': return 'Jenkins 비활성';
+    case 'ready': return '빌드 준비됨';
+    case 'idle': return '대기 중';
+    default: return status ?? '—';
+  }
+}
+
+function isTerminalBuildStatus(status?: string, building?: boolean): boolean {
+  if (building) return false;
+  return status === 'success' || status === 'failure' || status === 'aborted';
+}
+
+const DesktopBuildProgressPanel: React.FC<{
+  status: DesktopAppBuildStatusDto | null;
+  hint: string | null;
+  busy: boolean;
+  tracking: boolean;
+  tick: number;
+}> = ({ status, hint, busy, tracking, tick }) => {
+  void tick;
+  const building = Boolean(status?.building || status?.status === 'queued');
+  const active = busy || building || tracking;
+  const terminal = isTerminalBuildStatus(status?.status, status?.building);
+  const failed = !building && (status?.status === 'failure' || status?.status === 'error');
+  const succeeded = !building && status?.status === 'success';
+
+  if (!active && !terminal && !hint) return null;
+
+  const steps = [
+    { id: 'queue', label: 'Jenkins 빌드 시작', done: Boolean(status?.buildNumber) || building || terminal },
+    {
+      id: 'compile',
+      label: 'macOS dmg · Windows exe 빌드',
+      done: succeeded || (building && Boolean(status?.buildNumber)),
+      active: building && Boolean(status?.buildNumber),
+    },
+    { id: 'deploy', label: '설치 파일 배포', done: succeeded, active: false },
+  ];
+
+  return (
+    <div
+      className={`app-download-build-progress${active ? ' app-download-build-progress--active' : ''}${failed ? ' app-download-build-progress--failed' : ''}${succeeded ? ' app-download-build-progress--success' : ''}`}
+      role="status"
+      aria-live="polite"
+    >
+      <div className="app-download-build-progress-head">
+        <div className="app-download-build-progress-title">
+          {(active || building) && <span className="app-download-build-spinner" aria-hidden />}
+          <strong>{buildStatusLabel(status?.status, status?.building)}</strong>
+          {status?.buildNumber != null && (
+            <span className="app-download-build-badge">#{status.buildNumber}</span>
+          )}
+        </div>
+        {(building || status?.startedAtMs) && (
+          <span className="app-download-build-elapsed">
+            경과 {formatElapsed(status?.startedAtMs)}
+          </span>
+        )}
+      </div>
+
+      {(active || building) && (
+        <div className="app-download-build-bar" aria-hidden>
+          <div className="app-download-build-bar-fill" />
+        </div>
+      )}
+
+      <ol className="app-download-build-steps">
+        {steps.map(step => (
+          <li
+            key={step.id}
+            className={`app-download-build-step${step.done ? ' done' : ''}${step.active ? ' active' : ''}`}
+          >
+            <span className="app-download-build-step-dot" aria-hidden />
+            {step.label}
+          </li>
+        ))}
+      </ol>
+
+      {(hint || status?.message) && (
+        <p className="app-download-build-message">{hint ?? status?.message}</p>
+      )}
+
+      {succeeded && (
+        <p className="app-download-build-done-note">아래에서 macOS·Windows 설치 파일을 다운로드할 수 있습니다.</p>
+      )}
+    </div>
+  );
+};
+
 const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop }) => {
   const [info, setInfo] = useState<DesktopAppReleaseInfoDto | null>(null);
   const [buildStatus, setBuildStatus] = useState<DesktopAppBuildStatusDto | null>(null);
@@ -206,6 +314,8 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
   const [error, setError] = useState<string | null>(null);
   const [buildBusy, setBuildBusy] = useState(false);
   const [buildHint, setBuildHint] = useState<string | null>(null);
+  const [buildTracking, setBuildTracking] = useState(false);
+  const [elapsedTick, setElapsedTick] = useState(0);
 
   const reloadRelease = useCallback(async () => {
     const data = await loadDesktopAppReleaseInfo();
@@ -228,29 +338,51 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
   }, [reloadRelease, reloadBuildStatus]);
 
   const isBuilding = Boolean(buildStatus?.building || buildStatus?.status === 'queued');
+  const showBuildProgress = Boolean(
+    buildBusy || buildTracking || isBuilding
+    || (buildStatus?.buildNumber && buildStatus.status !== 'idle' && buildStatus.status !== 'ready'),
+  );
 
   useEffect(() => {
-    if (!isBuilding) return;
-    const timer = window.setInterval(() => {
+    if (!showBuildProgress || buildStatus?.startedAtMs == null) return;
+    const timer = window.setInterval(() => setElapsedTick(t => t + 1), 1000);
+    return () => window.clearInterval(timer);
+  }, [showBuildProgress, buildStatus?.startedAtMs]);
+
+  useEffect(() => {
+    if (!buildTracking && !isBuilding && !buildBusy) return;
+    const poll = () => {
       void reloadBuildStatus().then(st => {
-        if (st && !st.building && st.status !== 'queued') {
+        if (!st) return;
+        if (isTerminalBuildStatus(st.status, st.building)) {
+          setBuildTracking(false);
+          void reloadRelease();
+        } else if (!st.building && st.status !== 'queued') {
           void reloadRelease();
         }
       });
-    }, 8000);
+    };
+    poll();
+    const timer = window.setInterval(poll, BUILD_POLL_MS);
     return () => window.clearInterval(timer);
-  }, [isBuilding, reloadBuildStatus, reloadRelease]);
+  }, [buildTracking, isBuilding, buildBusy, reloadBuildStatus, reloadRelease]);
 
   const handleBuild = useCallback(async () => {
     if (!canBuildDesktop || buildBusy || isBuilding) return;
     setBuildBusy(true);
+    setBuildTracking(true);
     setBuildHint('Jenkins 빌드 요청 중…');
     try {
       const res = await triggerDesktopAppBuild();
       setBuildHint(res.message ?? (res.accepted ? '빌드 시작됨' : '빌드 요청 거부'));
+      if (!res.accepted) setBuildTracking(false);
       await reloadBuildStatus();
+      if (res.accepted) {
+        window.setTimeout(() => { void reloadBuildStatus(); }, 2000);
+      }
     } catch (e) {
       setBuildHint(e instanceof Error ? e.message : '빌드 요청 실패');
+      setBuildTracking(false);
     } finally {
       setBuildBusy(false);
     }
@@ -261,7 +393,7 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
   if (loading) return <p className="app-download-muted">PC 프로그램 정보 불러오는 중…</p>;
   if (error) return <p className="app-download-error">{error}</p>;
 
-  const statusMessage = buildHint ?? buildStatus?.message;
+  const statusMessage = !showBuildProgress ? (buildHint ?? buildStatus?.message) : null;
 
   return (
     <>
@@ -291,6 +423,16 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
         )}
       </div>
 
+      {showBuildProgress && (
+        <DesktopBuildProgressPanel
+          status={buildStatus}
+          hint={buildHint}
+          busy={buildBusy}
+          tracking={buildTracking}
+          tick={elapsedTick}
+        />
+      )}
+
       {statusMessage && (
         <p className={`app-download-build-status${isBuilding ? ' app-download-build-status--active' : ''}`}>
           {statusMessage}
@@ -319,7 +461,7 @@ const DesktopTab: React.FC<{ canBuildDesktop: boolean }> = ({ canBuildDesktop })
 
       {isBuilding && !hasAny && (
         <p className="app-download-muted app-download-build-wait">
-          Jenkins에서 macOS dmg · Windows setup.exe를 빌드 중입니다. 완료되면 아래에 다운로드가 표시됩니다.
+          Tauri macOS dmg · Windows NSIS 빌드가 진행 중입니다. 완료되면 아래에 다운로드가 표시됩니다.
         </p>
       )}