diff --git a/apps/admin-ui/src/app/viewers/page.tsx b/apps/admin-ui/src/app/viewers/page.tsx
index 4ce7eb2..1b66845 100644
--- a/apps/admin-ui/src/app/viewers/page.tsx
+++ b/apps/admin-ui/src/app/viewers/page.tsx
@@ -496,12 +496,53 @@ export default function ViewersPage() {
   }
 
   async function revokeDevice(deviceId: string) {
-    if (!confirm("Apparaat intrekken? De app moet opnieuw worden gekoppeld.")) return;
-    await fetch(`/api/v1/admin/viewers/devices/${deviceId}/revoke`, {
-      method: "POST",
-      credentials: "include",
-    });
-    load();
+    if (!confirm("Apparaat loskoppelen? De app moet opnieuw worden gekoppeld.")) return;
+    setActionId(deviceId);
+    setErr(null);
+    try {
+      const res = await fetch(`/api/v1/admin/viewers/devices/${deviceId}/revoke`, {
+        method: "POST",
+        credentials: "include",
+      });
+      if (!res.ok) {
+        const data = await res.json().catch(() => ({}));
+        setErr(data.error?.message ?? "Apparaat loskoppelen mislukt");
+        return;
+      }
+      setMsg("Apparaat losgekoppeld");
+      load();
+    } finally {
+      setActionId(null);
+    }
+  }
+
+  async function deleteViewer(v: Viewer) {
+    const label = v.name || v.email;
+    if (
+      !confirm(
+        `Gebruiker “${label}” definitief verwijderen?\n\nApparaten, profielen, IPTV-lijn en voortgang verdwijnen. Stremio-addons blijven bestaan maar zonder koppeling.`
+      )
+    ) {
+      return;
+    }
+    setActionId(v.id);
+    setErr(null);
+    try {
+      const res = await fetch(`/api/v1/admin/viewers/${v.id}`, {
+        method: "DELETE",
+        credentials: "include",
+      });
+      const data = await res.json().catch(() => ({}));
+      if (!res.ok) {
+        setErr(data.error?.message ?? "Verwijderen mislukt");
+        return;
+      }
+      if (expandedId === v.id) setExpandedId(null);
+      setMsg(`${label} verwijderd`);
+      load();
+    } finally {
+      setActionId(null);
+    }
   }
 
   return (
@@ -675,6 +716,44 @@ export default function ViewersPage() {
 
                     {open && (
                       <div className="viewer-detail">
+                        <details className="devices-fold" open={v.deviceCount > 0 && v.deviceCount <= 3}>
+                          <summary>
+                            Apparaten
+                            <span className="muted">
+                              {v.deviceCount === 0
+                                ? " · geen gekoppeld"
+                                : ` · ${v.deviceCount} actief`}
+                            </span>
+                          </summary>
+                          {v.devices.length === 0 ? (
+                            <p className="muted detail-copy">Nog geen gekoppelde apparaten.</p>
+                          ) : (
+                            <ul className="device-rows">
+                              {v.devices.map((d) => (
+                                <li key={d.id}>
+                                  <div>
+                                    <strong>{d.name}</strong>
+                                    <span className="muted">
+                                      {d.platform}
+                                      {d.lastSeenAt
+                                        ? ` · laatst gezien ${formatWhen(d.lastSeenAt)}`
+                                        : ""}
+                                    </span>
+                                  </div>
+                                  <button
+                                    type="button"
+                                    className="danger"
+                                    disabled={actionId === d.id}
+                                    onClick={() => void revokeDevice(d.id)}
+                                  >
+                                    Loskoppelen
+                                  </button>
+                                </li>
+                              ))}
+                            </ul>
+                          )}
+                        </details>
+
                         <div className="detail-grid">
                           <section className="detail-block">
                             <h3>Account</h3>
@@ -730,6 +809,16 @@ export default function ViewersPage() {
                                 </button>
                               </div>
                             </div>
+                            <div className="detail-actions" style={{ marginTop: "0.85rem" }}>
+                              <button
+                                type="button"
+                                className="danger"
+                                disabled={actionId === v.id}
+                                onClick={() => void deleteViewer(v)}
+                              >
+                                Gebruiker verwijderen
+                              </button>
+                            </div>
                           </section>
 
                           <section className="detail-block">
@@ -993,32 +1082,6 @@ export default function ViewersPage() {
                             )}
                           </section>
                         </div>
-
-                        <section className="detail-block devices-block">
-                          <h3>Apparaten</h3>
-                          {v.devices.length === 0 ? (
-                            <p className="muted">Nog geen gekoppelde apparaten.</p>
-                          ) : (
-                            <ul className="device-rows">
-                              {v.devices.map((d) => (
-                                <li key={d.id}>
-                                  <div>
-                                    <strong>{d.name}</strong>
-                                    <span className="muted">
-                                      {d.platform}
-                                      {d.lastSeenAt
-                                        ? ` · laatst gezien ${formatWhen(d.lastSeenAt)}`
-                                        : ""}
-                                    </span>
-                                  </div>
-                                  <button type="button" className="danger" onClick={() => void revokeDevice(d.id)}>
-                                    Intrekken
-                                  </button>
-                                </li>
-                              ))}
-                            </ul>
-                          )}
-                        </section>
                       </div>
                     )}
                   </li>
@@ -1365,13 +1428,41 @@ export default function ViewersPage() {
           word-break: break-all;
           color: var(--text-bright);
         }
-        .devices-block {
-          border-top: 1px solid var(--border-dim);
-          padding-top: 0.85rem;
+        .devices-fold {
+          margin-bottom: 0.85rem;
+          border: 1px solid var(--border-dim);
+          border-radius: 10px;
+          background: var(--bg-elevated);
+          padding: 0.35rem 0.75rem 0.65rem;
+        }
+        .devices-fold summary {
+          cursor: pointer;
+          list-style: none;
+          font-weight: 600;
+          font-size: 0.92rem;
+          padding: 0.45rem 0;
+          color: var(--text-bright);
+          user-select: none;
+        }
+        .devices-fold summary::-webkit-details-marker {
+          display: none;
+        }
+        .devices-fold summary::before {
+          content: "▸";
+          display: inline-block;
+          width: 1rem;
+          color: var(--muted);
+          transition: transform 0.15s ease;
+        }
+        .devices-fold[open] summary::before {
+          transform: rotate(90deg);
+        }
+        .devices-fold .detail-copy {
+          margin: 0.25rem 0 0.5rem;
         }
         .device-rows {
           list-style: none;
-          margin: 0;
+          margin: 0.35rem 0 0;
           padding: 0;
           display: grid;
           gap: 0.45rem;
@@ -1384,7 +1475,7 @@ export default function ViewersPage() {
           padding: 0.65rem 0.75rem;
           border-radius: 8px;
           border: 1px solid var(--border-dim);
-          background: var(--bg-elevated);
+          background: var(--bg);
         }
         .device-rows strong {
           display: block;
diff --git a/apps/master-api/src/viewer/routes.ts b/apps/master-api/src/viewer/routes.ts
index 29ba8db..0a95fe8 100644
--- a/apps/master-api/src/viewer/routes.ts
+++ b/apps/master-api/src/viewer/routes.ts
@@ -61,6 +61,21 @@ export function registerViewerRoutes(
     return { viewer };
   });
 
+  app.delete("/api/v1/admin/viewers/:id", { preHandler: requireAdmin }, async (request) => {
+    const { id } = request.params as { id: string };
+    const admin = (request as AuthenticatedRequest).user;
+    // Play-groep opruimen vóór cascade-delete
+    try {
+      await googlePlay.onViewerDisabled(id, {
+        adminUserId: admin.id,
+        adminEmail: admin.email,
+      });
+    } catch {
+      // verwijderen mag niet blokkeren op Play-sync
+    }
+    return viewers.deleteViewer(id);
+  });
+
   app.get("/api/v1/admin/viewers/:id/iptv", { preHandler: requireAdmin }, async (request) => {
     const { id } = request.params as { id: string };
     const { prisma } = await import("../database/client");
diff --git a/apps/master-api/src/viewer/service.ts b/apps/master-api/src/viewer/service.ts
index 3c917af..fff5f80 100644
--- a/apps/master-api/src/viewer/service.ts
+++ b/apps/master-api/src/viewer/service.ts
@@ -116,7 +116,7 @@ export class ViewerService {
     const rows = await prisma.viewerUser.findMany({
       orderBy: { createdAt: "desc" },
       include: {
-        _count: { select: { devices: true } },
+        _count: { select: { devices: { where: { revoked: false } } } },
         iptvLine: {
           select: {
             id: true,
@@ -190,6 +190,14 @@ export class ViewerService {
     }));
   }
 
+  async deleteViewer(id: string) {
+    const existing = await prisma.viewerUser.findUnique({ where: { id }, select: { id: true } });
+    if (!existing) throw new AppError("NOT_FOUND", "Gebruiker niet gevonden", 404);
+    // Cascade: profiles, devices, prefs, favorites, iptv-lijn; addon-tokens blijven (viewerUserId → null)
+    await prisma.viewerUser.delete({ where: { id } });
+    return { ok: true };
+  }
+
   async updateViewer(
     id: string,
     data: {