diff --git a/app/js/aether_app_native_v4.js b/app/js/aether_app_native_v4.js
index 9cfcf3e..b410bcb 100644
--- a/app/js/aether_app_native_v4.js
+++ b/app/js/aether_app_native_v4.js
@@ -730,14 +730,25 @@ exports.check_file_cache_and_open_local_file = async function ({local_file_cache
 
 // Kill processes
 // Updated 2022-05-07
-exports.kill_processes = async function ({process_name = null}) {
+exports.kill_processes = async function ({process_name = null, process_id = null, signal = null}) {
     console.log('*** Electron framework export: kill_processes() ***');
     console.log(process_name); // process_name or grep pattern
 
     let cmd = '';
     if (os.platform == 'darwin') {
-        // cmd = `osascript -e 'quit app "${process_name}" saving no'`;
-        cmd = `osascript -e 'quit application "${process_name}" saving no'`;
+        if (signal == 'quit') {
+            cmd = `killall -QUIT '${process_name}'`;
+        } else if (signal == 'kill') {
+                cmd = `killall -KILL '${process_name}'`;
+        } else if (process_id && signal == 'quit') {
+                cmd = `killall -QUIT ${process_id}`;
+        } else if (process_id && signal == 'kill') {
+                cmd = `killall -KILL ${process_id}`;
+        } else {
+            // cmd = `osascript -e 'quit app "${process_name}" saving no'`;
+            cmd = `osascript -e 'quit application "${process_name}" saving no'`;
+        }
+
     } else {
         cmd = `pkill ${process_name}`;
     }
diff --git a/config.json b/config.json
index 0909e17..d08d7c6 100644
--- a/config.json
+++ b/config.json
@@ -1,4 +1,7 @@
 {
+  "developer_tools": false,
+  "native_app_js_css_option": "default",
+
   "account_id": "_XY7DXtc9MY",
   "event_id": "pjrcghqwert",
   "event_device_id": "dbgMWS3KEHE",
diff --git a/config.json.default b/config.json.default
index 5d625d3..515a6e4 100644
--- a/config.json.default
+++ b/config.json.default
@@ -1,4 +1,7 @@
 {
+  "developer_tools": false,
+  "native_app_js_css_option": "default",
+
   "account_id": "",
   "account_code": "",
   "event_id": "",
diff --git a/index.js b/index.js
index 4fe6afb..fa5db40 100644
--- a/index.js
+++ b/index.js
@@ -93,7 +93,9 @@ function createWindow () {
     }
 
     // Open the DevTools.
-    win.webContents.openDevTools(); // Comment out for production
+    if (config.developer_tools) {
+        win.webContents.openDevTools(); // Comment out for production
+    }
 
     // Emitted when the window is closed.
     win.on('closed', () => {