diff --git a/docs/frame.md b/docs/frame.md
index 9026f30c1..7f50ffe62 100644
--- a/docs/frame.md
+++ b/docs/frame.md
@@ -96,9 +96,6 @@ Notable control frames:
 
 ## 7. Special Purpose Frames
 
-### AppFrame
-Base class for application-specific custom frames.
-
 ### MetricsFrame
 Contains performance metrics data.
 
diff --git a/examples/foundational/05-sync-speech-and-image.py b/examples/foundational/05-sync-speech-and-image.py
index 5477d0691..64f85930b 100644
--- a/examples/foundational/05-sync-speech-and-image.py
+++ b/examples/foundational/05-sync-speech-and-image.py
@@ -12,7 +12,7 @@ import sys
 from dataclasses import dataclass
 
 from pipecat.frames.frames import (
-    AppFrame,
+    DataFrame,
     Frame,
     LLMFullResponseStartFrame,
     LLMMessagesFrame,
@@ -42,7 +42,7 @@ logger.add(sys.stderr, level="DEBUG")
 
 
 @dataclass
-class MonthFrame(AppFrame):
+class MonthFrame(DataFrame):
     month: str
 
     def __str__(self):
diff --git a/src/pipecat/frames/frames.py b/src/pipecat/frames/frames.py
index b99a7307c..17059700a 100644
--- a/src/pipecat/frames/frames.py
+++ b/src/pipecat/frames/frames.py
@@ -243,16 +243,6 @@ class TransportMessageFrame(DataFrame):
         return f"{self.name}(message: {self.message})"
 
 
-#
-# App frames. Application user-defined frames.
-#
-
-
-@dataclass
-class AppFrame(Frame):
-    pass
-
-
 #
 # System frames
 #
diff --git a/src/pipecat/processors/filters/frame_filter.py b/src/pipecat/processors/filters/frame_filter.py
index f4c4b0f61..11f2e601a 100644
--- a/src/pipecat/processors/filters/frame_filter.py
+++ b/src/pipecat/processors/filters/frame_filter.py
@@ -6,7 +6,7 @@
 
 from typing import Tuple, Type
 
-from pipecat.frames.frames import AppFrame, ControlFrame, Frame, SystemFrame
+from pipecat.frames.frames import ControlFrame, Frame, SystemFrame
 from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
 
 
@@ -23,11 +23,7 @@ class FrameFilter(FrameProcessor):
         if isinstance(frame, self._types):
             return True
 
-        return (
-            isinstance(frame, AppFrame)
-            or isinstance(frame, ControlFrame)
-            or isinstance(frame, SystemFrame)
-        )
+        return isinstance(frame, ControlFrame) or isinstance(frame, SystemFrame)
 
     async def process_frame(self, frame: Frame, direction: FrameDirection):
         await super().process_frame(frame, direction)