diff --git a/.changes/warn-dot-app-id.md b/.changes/warn-dot-app-id.md
new file mode 100644
index 000000000000..514be44b88ff
--- /dev/null
+++ b/.changes/warn-dot-app-id.md
@@ -0,0 +1,6 @@
+---
+"tauri-cli": "patch:feat"
+"@tauri-apps/cli": "patch:feat"
+---
+
+Warn the user that the app id shouldn't end in `.app` because it conflicts with the application bundle extension on macOS
diff --git a/crates/tauri-cli/src/build.rs b/crates/tauri-cli/src/build.rs
index 0af5bac7ad9b..5d28657def85 100644
--- a/crates/tauri-cli/src/build.rs
+++ b/crates/tauri-cli/src/build.rs
@@ -150,6 +150,23 @@ pub fn setup(
     std::process::exit(1);
   }
 
+  if config_.identifier.ends_with(".app") {
+    if cfg!(target_os = "macos") {
+      log::error!(
+        "The bundle identifier \"{}\" set in `{} identifier` must not end with `.app` on macOS because it conflicts with the application bundle extension.",
+        config_.identifier,
+        bundle_identifier_source
+      );
+      std::process::exit(1);
+    } else {
+      log::warn!(
+        "The bundle identifier \"{}\" set in `{} identifier` ends with `.app`. This is not recommended because it conflicts with the application bundle extension on macOS.",
+        config_.identifier,
+        bundle_identifier_source
+      );
+    }
+  }
+
   if let Some(before_build) = config_.build.before_build_command.clone() {
     helpers::run_hook("beforeBuildCommand", before_build, interface, options.debug)?;
   }