diff --git a/rigshare_core/hub.py b/rigshare_core/hub.py
index c7838e7..0059775 100644
--- a/rigshare_core/hub.py
+++ b/rigshare_core/hub.py
@@ -21,7 +21,7 @@ from aiohttp import web, WSMsgType
 from .chatlog import ChatLog
 from .graphdoc import apply_patch, remap_conflicts
 from .stats import collect_stats
-from .workspace import Workspace
+from .workspace import Workspace, has_app
 
 log = logging.getLogger("ComfyUI-RigShare")
 
@@ -285,7 +285,7 @@ class Hub:
                             "updated": int(room.updated), "members": members,
                             "nodes": len((room.doc or {}).get("nodes") or []),
                             "restricted": self.folder_restricted(self.folder_of(room)),
-                            "app": room.key.endswith(".app.json")})
+                            "app": room.key.endswith(".app.json") or has_app(room.doc)})
         out.sort(key=lambda r: (-len(r["members"]), -r["updated"]))
         return out
 
diff --git a/rigshare_core/workspace.py b/rigshare_core/workspace.py
index 9ec7945..7a8b04b 100644
--- a/rigshare_core/workspace.py
+++ b/rigshare_core/workspace.py
@@ -11,6 +11,7 @@ Paths handled here are relative to the *userdata* root, e.g.
 every path is fully URL-decoded and normalised before it is checked.
 """
 
+import json
 import os
 import posixpath
 import re
@@ -40,6 +41,13 @@ def norm(path):
     return posixpath.normpath("/" + path).lstrip("/") if path else ""
 
 
+def has_app(doc):
+    """A workflow with an App set up (ComfyUI App mode: chosen inputs or outputs)."""
+    data = (doc or {}).get("extra") if isinstance(doc, dict) else None
+    linear = (data or {}).get("linearData") if isinstance(data, dict) else None
+    return isinstance(linear, dict) and bool(linear.get("inputs") or linear.get("outputs"))
+
+
 def min_role(a, b):
     return a if ROLE_RANK[a] <= ROLE_RANK[b] else b
 
@@ -51,6 +59,7 @@ class Workspace:
         self.folders = store._read("folders.json", {})  # "shared/<name>" -> {owner, acl, created}
         os.makedirs(os.path.join(root, "users"), exist_ok=True)
         os.makedirs(os.path.join(root, "shared"), exist_ok=True)
+        self._app_cache = {}  # absolute path -> (mtime, size, has an App)
 
     def save(self):
         self.store._write("folders.json", self.folders)
@@ -191,6 +200,24 @@ class Workspace:
     def _abs(self, rel):
         return os.path.join(self.root, *[p for p in rel.split("/") if p])
 
+    def _file_has_app(self, full):
+        """Read a workflow file only when it changed since the last check."""
+        try:
+            st = os.stat(full)
+        except OSError:
+            return False
+        cached = self._app_cache.get(full)
+        if cached and cached[0] == st.st_mtime and cached[1] == st.st_size:
+            return cached[2]
+        try:
+            with open(full, "r", encoding="utf-8") as f:
+                text = f.read()
+            found = '"linearData"' in text and has_app(json.loads(text))
+        except (OSError, ValueError):
+            found = False
+        self._app_cache[full] = (st.st_mtime, st.st_size, found)
+        return found
+
     def _entry(self, rel, name, is_dir, kind, key, perms):
         full = self._abs(rel)
         is_app = not is_dir and name.endswith(".app.json")  # saved as an App (ComfyUI App mode)
@@ -203,7 +230,7 @@ class Workspace:
             meta = self.folders.get(folder) or {}
             entry.update(owner=meta.get("owner"), restricted=bool(meta.get("acl")),
                          manage=self.can_manage(folder, kind, key, perms))
-        if is_app:
+        if is_app or (not is_dir and self._file_has_app(full)):
             entry["app"] = True
         entry["deletable"] = self.can_delete(rel, kind, key, perms)
         return entry
diff --git a/tests/python/test_server.py b/tests/python/test_server.py
index cdc82dd..bcc92ea 100644
--- a/tests/python/test_server.py
+++ b/tests/python/test_server.py
@@ -390,3 +390,31 @@ def test_listing_inside_a_shared_folder(run):
             assert (await here(bob, "shared/FaceSwap"))["manage"] is False
             assert await here(alice, "users/alice") is None
     run(scenario())
+
+
+def test_workflows_with_an_app_set_up(run):
+    async def scenario():
+        async with rig_server() as rig:
+            await rig.setup_admin()
+            alice = await rig.add_user("alice", edit=True)
+            h = rig.http
+            with_app = json.dumps({"nodes": [], "extra": {"linearData": {"inputs": [[3, "seed"]], "outputs": [9]}}}).encode()
+            empty_app = json.dumps({"nodes": [], "extra": {"linearData": {"inputs": [], "outputs": []}}}).encode()
+            for name, body in (("faceswap.json", with_app), ("empty.json", empty_app), ("plain.json", b"{}")):
+                await h.post(rig.url(f"/api/userdata/{enc('workflows/users/alice/' + name)}"), data=body, headers=alice)
+
+            async def apps():
+                listing = await (await h.get(rig.url("/rigshare/api/workspace/list?path=users/alice"), headers=alice)).json()
+                return {e["name"] for e in listing["entries"] if e.get("app")}
+            assert await apps() == {"faceswap"}, "only a workflow whose App has inputs or outputs"
+            # Edited on disk: the cached answer follows the file.
+            await h.post(rig.url(f"/api/userdata/{enc('workflows/users/alice/faceswap.json')}"), data=b'{"nodes": []}', headers=alice)
+            assert await apps() == set()
+
+            sock = await rig.ws("alice")
+            await sock.send({"type": "join", "room": "file:workflows/shared/f.json", "name": "f", "doc": json.loads(with_app)})
+            await sock.until("room")
+            presence = [m for m in await sock.drain() if m["type"] == "presence"][-1]
+            assert presence["rooms"][0]["app"] is True
+            await sock.close()
+    run(scenario())
diff --git a/web/rigshare/styles.js b/web/rigshare/styles.js
index 17296c9..492ed20 100644
--- a/web/rigshare/styles.js
+++ b/web/rigshare/styles.js
@@ -204,7 +204,7 @@ body.rs-no-manager [aria-label="ComfyUI Manager"] { display: none !important; }
 .rs-fb-main { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; padding: 7px 8px; border: 0; background: none;
   color: inherit; font: inherit; text-align: left; cursor: pointer; }
 .rs-fb-main:disabled { cursor: default; }
-.rs-fb-icon { font-size: 16px; color: var(--rs-muted); width: 18px; text-align: center; flex: none; }
+.rs-fb-icon { font-size: 13px; color: var(--rs-muted); width: 15px; text-align: center; flex: none; }
 .rs-fb-icon.folder { color: #f5b942; }
 .rs-fb-tools-row { display: none; gap: 3px; padding-right: 6px; }
 .rs-fb-row:hover .rs-fb-tools-row, .rs-fb-row:focus-within .rs-fb-tools-row { display: flex; }