diff --git a/docs/superpowers/evidence/register-betting-sim-icon-2026-08-28.json b/docs/superpowers/evidence/register-betting-sim-icon-2026-08-28.json
new file mode 100644
index 00000000..d7a09b5f
--- /dev/null
+++ b/docs/superpowers/evidence/register-betting-sim-icon-2026-08-28.json
@@ -0,0 +1,36 @@
+{
+  "intent": "betting-sim's Flutter app gets a launcher icon from the shared family instead of the stock Flutter beach icon.",
+  "scope": [
+    "python_pkg/app_icons/apps.py — one new AppIcon entry",
+    "Non-goal: no change to the generator, the glyph set, or any other app's icon"
+  ],
+  "changes": [
+    "Registered betting_sim: repo ~/betting-sim/app, accent #B8862E, glyph track-bars (rising bars with a plotted trend point, which reads as odds movement).",
+    "Set linux=false: betting-sim's desktop target is a Chrome-wrapped web build rather than the GTK embedder, so the hicolor PNG set would go unread."
+  ],
+  "verification": [
+    {
+      "command": "PYTHONPATH=. python3 -m python_pkg.app_icons list",
+      "result": "pass",
+      "evidence": "betting_sim  #B8862E  track-bars  /home/kuhy/betting-sim/app"
+    },
+    {
+      "command": "PYTHONPATH=. python3 -m python_pkg.app_icons generate --app betting_sim --android",
+      "result": "pass",
+      "evidence": "wrote 6 asset files to /home/kuhy/betting-sim/app/assets/icon; mipmaps generated after adding flutter_launcher_icons to the app pubspec"
+    },
+    {
+      "command": "visual check of assets/icon/icon.png",
+      "result": "pass",
+      "evidence": "charcoal #211D1B field, #B8862E glyph — on-family, no stock beach icon"
+    }
+  ],
+  "risks": [
+    "None to existing apps: the change is purely additive, one tuple entry.",
+    "If betting-sim later grows a real GTK Linux target, linux must flip to true or the hicolor set will be missing."
+  ],
+  "rollback": [
+    "Remove the betting_sim AppIcon entry from python_pkg/app_icons/apps.py.",
+    "Re-run `app_icons list` and confirm the other 14 apps are unchanged."
+  ]
+}
diff --git a/python_pkg/app_icons/apps.py b/python_pkg/app_icons/apps.py
index 5ffc71b2..e089de11 100644
--- a/python_pkg/app_icons/apps.py
+++ b/python_pkg/app_icons/apps.py
@@ -178,6 +178,17 @@ APPS: Final[dict[str, AppIcon]] = {
             # run on the desktop, but the Flutter app itself has no Linux target.
             linux=False,
         ),
+        AppIcon(
+            key="betting_sim",
+            repo=_HOME / "betting-sim" / "app",
+            accent="#B8862E",
+            glyph="track-bars",
+            icon_name="betting_sim",
+            # Ships to Android natively and to Linux via a Chrome-wrapped web
+            # build, so the GTK embedder is never used and the hicolor set
+            # would go unread.
+            linux=False,
+        ),
     )
 }