diff --git a/tests/test_main.py b/tests/test_main.py
new file mode 100644
index 0000000..95a0986
--- /dev/null
+++ b/tests/test_main.py
@@ -0,0 +1,67 @@
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import numpy as np
+import pytest
+
+from whisper_local.__main__ import App
+
+
+class TestApp:
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_app_init(self, mock_hotkey_class, mock_transcriber_class):
+        app = App()
+        assert app.recorder is not None
+        assert app.inserter is not None
+        mock_transcriber_class.assert_called_once()
+        mock_hotkey_class.assert_called_once()
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_press_starts_recording(self, mock_hotkey_class, mock_transcriber_class):
+        app = App()
+        app.recorder = MagicMock()
+
+        import asyncio
+        asyncio.run(app.on_press())
+
+        app.recorder.start.assert_called_once()
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_release_stops_and_transcribes(self, mock_hotkey_class, mock_transcriber_class):
+        mock_transcriber = MagicMock()
+        mock_transcriber.transcribe.return_value = "Hallo"
+        mock_transcriber_class.return_value = mock_transcriber
+
+        app = App()
+        app.recorder = MagicMock()
+        audio = np.zeros(16000, dtype=np.float32)
+        app.recorder.stop.return_value = audio
+        app.inserter = MagicMock()
+        app.inserter.insert = AsyncMock()
+
+        import asyncio
+        asyncio.run(app.on_release())
+
+        app.recorder.stop.assert_called_once()
+        mock_transcriber.transcribe.assert_called_once_with(audio)
+        app.inserter.insert.assert_awaited_once_with("Hallo")
+
+    @patch("whisper_local.__main__.Transcriber")
+    @patch("whisper_local.__main__.HotkeyListener")
+    def test_on_release_no_audio_skips(self, mock_hotkey_class, mock_transcriber_class):
+        mock_transcriber = MagicMock()
+        mock_transcriber_class.return_value = mock_transcriber
+
+        app = App()
+        app.recorder = MagicMock()
+        app.recorder.stop.return_value = None
+        app.inserter = MagicMock()
+        app.inserter.insert = AsyncMock()
+
+        import asyncio
+        asyncio.run(app.on_release())
+
+        mock_transcriber.transcribe.assert_not_called()
+        app.inserter.insert.assert_not_awaited()
diff --git a/whisper_local/__main__.py b/whisper_local/__main__.py
new file mode 100644
index 0000000..826a18a
--- /dev/null
+++ b/whisper_local/__main__.py
@@ -0,0 +1,73 @@
+"""Entry-Point für whisper-local."""
+
+import asyncio
+import logging
+import sys
+
+from whisper_local.config import Config, load_config
+from whisper_local.hotkey import HotkeyListener
+from whisper_local.inserter import Inserter
+from whisper_local.recorder import Recorder
+from whisper_local.transcriber import Transcriber
+
+logger = logging.getLogger(__name__)
+
+
+class App:
+    def __init__(self, config: Config | None = None):
+        if config is None:
+            config = load_config()
+
+        self.recorder = Recorder(
+            sample_rate=config.sample_rate,
+            channels=config.channels,
+            min_duration=config.min_duration,
+        )
+        self.transcriber = Transcriber(
+            model_name=config.whisper_model,
+            compute_type=config.compute_type,
+            language=config.language,
+        )
+        self.inserter = Inserter()
+        self.hotkey = HotkeyListener(key_name=config.hotkey)
+        self.hotkey.on_press = self.on_press
+        self.hotkey.on_release = self.on_release
+
+    async def on_press(self) -> None:
+        """Callback: Hotkey gedrückt — Aufnahme starten."""
+        logger.info("Aufnahme startet...")
+        self.recorder.start()
+
+    async def on_release(self) -> None:
+        """Callback: Hotkey losgelassen — Aufnahme stoppen, transkribieren, einfügen."""
+        audio = self.recorder.stop()
+        if audio is None:
+            logger.info("Keine Audio-Daten, übersprungen")
+            return
+
+        logger.info("Transkribiere...")
+        text = self.transcriber.transcribe(audio)
+        if text:
+            await self.inserter.insert(text)
+
+    async def run(self) -> None:
+        """Startet den Hauptloop."""
+        logger.info("whisper-local gestartet, warte auf Hotkey...")
+        await self.hotkey.listen()
+
+
+def main():
+    logging.basicConfig(
+        level=logging.INFO,
+        format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    )
+    app = App()
+    try:
+        asyncio.run(app.run())
+    except KeyboardInterrupt:
+        logger.info("Beendet")
+        sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()