diff --git a/passbook/lib/utils/reflection.py b/passbook/lib/utils/reflection.py
index 5fc72f948..0a218f6fd 100644
--- a/passbook/lib/utils/reflection.py
+++ b/passbook/lib/utils/reflection.py
@@ -1,12 +1,19 @@
 """passbook lib reflection utilities"""
 from importlib import import_module
 
+from django.conf import settings
+
 
 def all_subclasses(cls, sort=True):
     """Recursively return all subclassess of cls"""
     classes = set(cls.__subclasses__()).union(
         [s for c in cls.__subclasses__() for s in all_subclasses(c, sort=sort)]
     )
+    # Check if we're in debug mode, if not exclude classes which have `__debug_only__`
+    if not settings.DEBUG:
+        # Filter class out when __debug_only__ is not False
+        classes = [x for x in classes if not getattr(x, "__debug_only__", False)]
+        # classes = filter(lambda x: not getattr(x, "__debug_only__", False), classes)
     if sort:
         return sorted(classes, key=lambda x: x.__name__)
     return classes
@@ -34,10 +41,3 @@ def get_apps():
     for _app in apps.get_app_configs():
         if _app.name.startswith("passbook"):
             yield _app
-
-
-def app(name):
-    """Return true if app with `name` is enabled"""
-    from django.conf import settings
-
-    return name in settings.INSTALLED_APPS
diff --git a/passbook/policies/dummy/models.py b/passbook/policies/dummy/models.py
index 5e7ca8c8b..a8172157a 100644
--- a/passbook/policies/dummy/models.py
+++ b/passbook/policies/dummy/models.py
@@ -16,6 +16,8 @@ class DummyPolicy(Policy):
     """Policy used for debugging the PolicyEngine. Returns a fixed result,
     but takes a random time to process."""
 
+    __debug_only__ = True
+
     result = models.BooleanField(default=False)
     wait_min = models.IntegerField(default=5)
     wait_max = models.IntegerField(default=30)
diff --git a/passbook/stages/dummy/models.py b/passbook/stages/dummy/models.py
index b934a9d10..3dfb1d891 100644
--- a/passbook/stages/dummy/models.py
+++ b/passbook/stages/dummy/models.py
@@ -7,6 +7,8 @@ from passbook.flows.models import Stage
 class DummyStage(Stage):
     """Used for debugging."""
 
+    __debug_only__ = True
+
     type = "passbook.stages.dummy.stage.DummyStage"
     form = "passbook.stages.dummy.forms.DummyStageForm"