diff --git a/src/day8/re_frame/trace.cljs b/src/day8/re_frame/trace.cljs
index 96d99fb..851ef82 100644
--- a/src/day8/re_frame/trace.cljs
+++ b/src/day8/re_frame/trace.cljs
@@ -1,5 +1,6 @@
 (ns day8.re-frame.trace
   (:require [day8.re-frame.trace.subvis :as subvis]
+            [day8.re-frame.trace.app-state :as app-state]
             [day8.re-frame.trace.styles :as styles]
             [day8.re-frame.trace.components :as components]
             [day8.re-frame.trace.localstorage :as localstorage]
@@ -331,11 +332,14 @@
                                             [:button {:class (str "tab button " (when (= @selected-tab :traces) "active"))
                                                       :on-click #(reset! selected-tab :traces)} "Traces"]
                                             [:button {:class (str "tab button " (when (= @selected-tab :subvis) "active"))
-                                                      :on-click #(reset! selected-tab :subvis)} "SubVis"]]]
+                                                      :on-click #(reset! selected-tab :subvis)} "SubVis"]
+                                            [:button {:class (str "tab button " (when (= @selected-tab :app-state) "active"))
+                                                      :on-click #(reset! selected-tab :app-state)} "app-state"]]]
                                         (case @selected-tab
                                           :traces [render-trace-panel]
                                           :subvis [subvis/render-subvis traces
-                                                    [:div.panel-content-scrollable]])]]]))})))
+                                                    [:div.panel-content-scrollable]]
+                                          :app-state [app-state/tab @traces])]]]))})))
 
 (defn panel-div []
   (let [id    "--re-frame-trace--"
diff --git a/src/day8/re_frame/trace/app_state.cljs b/src/day8/re_frame/trace/app_state.cljs
new file mode 100644
index 0000000..15f794b
--- /dev/null
+++ b/src/day8/re_frame/trace/app_state.cljs
@@ -0,0 +1,23 @@
+(ns day8.re-frame.trace.app-state
+  (:require [reagent.core :as r]
+            [clojure.string :as str]))
+
+(defn classname
+  [obj]
+  (str/replace (pr-str (type obj)) #"\.|/" "-"))
+
+(defn view
+  [data]
+  (if (string? data)
+    [:span.data-string data]
+    [:div {:class (classname data)}]))
+
+(defn crawl
+  [data]
+  (if (coll? data)
+    (into (view data) (mapv crawl data))
+    (view data)))
+
+(defn tab [data]
+  (println (crawl data))
+  (crawl data))