diff --git a/translator/app.py b/translator/app.py
index b39342c..c963466 100644
--- a/translator/app.py
+++ b/translator/app.py
@@ -76,6 +76,7 @@ class TranslatorApp:
             page_icon=self._config['app']['page_favicon_path'],
         )
         st.title(body=self._config['app']['page_title'])
+        st.markdown(self._config['app']['description'])
 
         direction = st.radio(
             label='語言',
diff --git a/translator/assets/config.toml b/translator/assets/config.toml
index 82bf8de..d9c39aa 100644
--- a/translator/assets/config.toml
+++ b/translator/assets/config.toml
@@ -1,5 +1,6 @@
 [app]
 page_title = "橫渡語言的黑水溝"
+description = "🔐 隱私優先：您輸入的內容不會被蒐集、儲存，或用於任何AI訓練用途。"
 page_favicon_path = "./assets/favicon.png"
 llm_mode = "openai"