diff --git a/build.py b/build.py
index 55ac2f0a..055c2ef8 100755
--- a/build.py
+++ b/build.py
@@ -220,7 +220,7 @@ if buildMobile:
         os.makedirs("mobile/assets")
     except:
         pass
-    shutil.copy(os.path.join(outDir,"total-conversion-build.user.js"), "mobile/assets/iitc.js")
+    shutil.copy(os.path.join(outDir,"total-conversion-build.user.js"), "mobile/assets/total-conversion-build.user.js")
     # copy the user location script into the mobile folder.
     shutil.copy(os.path.join(outDir,"user-location.user.js"), "mobile/assets/user-location.user.js")
 
diff --git a/mobile/HACKING.md b/mobile/HACKING.md
index 76d8d54e..a3250ddb 100644
--- a/mobile/HACKING.md
+++ b/mobile/HACKING.md
@@ -7,6 +7,11 @@ Communication from app to script is handled by loading Javascript function calls
 
 Communication from script to app is handled by the JavascriptInterface (see /mobile/src/com/cradle/iitc\_mobile/IITC_JSInterface.java). If a method ```foo(String)``` is defined in JSInterface, it can be called by ```android.foo("Hello World")``` in the IITC script.
 
+Developing IITC and Plugins for IITC Mobile
+-------------------------------------------
+
+The developer mode can be enabled in the settings. Create a folder ```IITC_Mobile/dev/``` on your external storage of your Android device and copy the sources from ```$IITC_folder/build/mobile/``` to it. If the developer mode is enabled all sources will be loaded from there.
+
 Debugging
 ---------
 
diff --git a/mobile/README.md b/mobile/README.md
index 24bed1fc..074034ff 100644
--- a/mobile/README.md
+++ b/mobile/README.md
@@ -5,7 +5,9 @@ The Android App behaves like the desktop version, but uses the mobile view, whic
 
 - it should be much faster than the standard mobile ingress intel map
 
-- a gmaps intent is sent, when a portals Map link is clicked (lets you navigate to portals)
+- plugin support
+
+- a geo intent is sent, when a portals Map link is clicked (lets you navigate to portals)
 
 - a geolocate button (you have to enable GPS satellites + location access to use this feature)
 
diff --git a/mobile/res/values/strings.xml b/mobile/res/values/strings.xml
index 42e7f276..26a51274 100644
--- a/mobile/res/values/strings.xml
+++ b/mobile/res/values/strings.xml
@@ -25,13 +25,12 @@
         is continued on a fork of <a href="https://github.com/jonatkins"><b>jonatkins</b></a>.<br><br>
         <b>Website:</b><br>
         <a href="http://iitc.jonatkins.com/">http://iitc.jonatkins.com/</a><br><br>
-        <b>Fork github:</b><br>
-        <a href="https://github.com/jonatkins/ingress-intel-total-conversion">https://github.com/jonatkins/ingress-intel-total-conversion</a><br><br>
-        <b>Old github:</b><br>
-        <a href="https://github.com/breunigs/ingress-intel-total-conversion">https://github.com/breunigs/ingress-intel-total-conversion</a>]]>
+        <b>IITC on Github:</b><br>
+        <a href="https://github.com/jonatkins/ingress-intel-total-conversion">https://github.com/jonatkins/ingress-intel-total-conversion</a>]]>
     </string>
 
     <string name="pref_ui_cat">UI</string>
+    <string name="pref_misc_cat">Misc</string>
     <string name="pref_plugins">Plugins</string>
     <string name="pref_plugins_title">Available plugins</string>
     <string name="pref_force_desktop">Force desktop mode</string>
@@ -39,6 +38,9 @@
     <string name="pref_user_loc">Display user location</string>
     <string name="pref_user_loc_sum">Show users position on map</string>
     <string name="pref_developer_options">Developer options</string>
+	<string name="pref_enable_dev_mode">Enable developer mode</string>
+	<string name="pref_enable_dev_mode_sum">If enabled, all IITC sources will be loaded from external storage of the Android device.
+	    Please copy all sources from $IITC_folder/build/mobile/ to /sdcard/IITC_Mobile/dev/.</string>
     <string name="pref_select_iitc">IITC source</string>
 
 </resources>
\ No newline at end of file
diff --git a/mobile/res/xml/preferences.xml b/mobile/res/xml/preferences.xml
index e485de40..432b0eab 100644
--- a/mobile/res/xml/preferences.xml
+++ b/mobile/res/xml/preferences.xml
@@ -12,31 +12,41 @@
     <PreferenceCategory
         android:key="pref_about_cat"
         android:title="@string/pref_ui_cat">
-    <CheckBoxPreference
-        android:key="pref_force_desktop"
-        android:title="@string/pref_force_desktop"
-        android:summary="@string/pref_force_desktop_sum"
-        android:defaultValue="false" />
-    <CheckBoxPreference
-        android:key="pref_user_loc"
-        android:title="@string/pref_user_loc"
-        android:summary="@string/pref_user_loc_sum"
-        android:defaultValue="false" />
-    <MultiSelectListPreference
-        android:key="pref_plugins"
-        android:title="@string/pref_plugins"
-        android:dialogTitle="@string/pref_plugins_title"/>
+	    <CheckBoxPreference
+	        android:key="pref_force_desktop"
+	        android:title="@string/pref_force_desktop"
+	        android:summary="@string/pref_force_desktop_sum"
+	        android:defaultValue="false" />
+	    <CheckBoxPreference
+	        android:key="pref_user_loc"
+	        android:title="@string/pref_user_loc"
+	        android:summary="@string/pref_user_loc_sum"
+	        android:defaultValue="false" />
+    </PreferenceCategory>
+
+    <PreferenceCategory
+        android:key="pref_mics"
+        android:title="@string/pref_misc_cat">
+        <EditTextPreference
+            android:key="pref_iitc_source"
+            android:title="@string/pref_select_iitc"
+            android:summary="Load IITC main script from url or use local script. Currently used source: "
+            android:defaultValue="local"/>
+	    <MultiSelectListPreference
+	        android:key="pref_plugins"
+	        android:title="@string/pref_plugins"
+	        android:dialogTitle="@string/pref_plugins_title"/>
     </PreferenceCategory>
 
     <PreferenceCategory
         android:key="pref_developer_options"
         android:title="@string/pref_developer_options">
 
-        <EditTextPreference
-            android:key="pref_iitc_source"
-            android:title="@string/pref_select_iitc"
-            android:summary=""
-            android:defaultValue="local"/>
+	    <CheckBoxPreference
+	        android:key="pref_dev_checkbox"
+	        android:title="@string/pref_enable_dev_mode"
+	        android:summary="@string/pref_enable_dev_mode_sum"
+	        android:defaultValue="false" />
 
         <ListPreference
             android:key="pref_build_version"
diff --git a/mobile/src/com/cradle/iitc_mobile/IITC_Mobile.java b/mobile/src/com/cradle/iitc_mobile/IITC_Mobile.java
index e69b7bc9..b779b756 100644
--- a/mobile/src/com/cradle/iitc_mobile/IITC_Mobile.java
+++ b/mobile/src/com/cradle/iitc_mobile/IITC_Mobile.java
@@ -53,9 +53,8 @@ public class IITC_Mobile extends Activity {
             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
                 if (key.equals("pref_force_desktop"))
                     desktop = sharedPreferences.getBoolean("pref_force_desktop", false);
-                if (key.equals("pref_user_loc")) {
+                if (key.equals("pref_user_loc"))
                     user_loc = sharedPreferences.getBoolean("pref_user_loc", false);
-                }
                 IITC_Mobile.this.loadUrl(intel_url);
             }
         };
diff --git a/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java b/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
index 49ca6756..ab9eb115 100644
--- a/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
+++ b/mobile/src/com/cradle/iitc_mobile/IITC_WebView.java
@@ -23,6 +23,8 @@ public class IITC_WebView extends WebView {
         settings.setAllowFileAccess(true);
         settings.setGeolocationEnabled(true);
         settings.setDatabasePath(this.getContext().getApplicationInfo().dataDir + "/databases/");
+        settings.setAppCachePath(this.getContext().getApplicationInfo().dataDir + "/cache/");
+        settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
         this.js_interface = new IITC_JSInterface(c);
         this.addJavascriptInterface(js_interface, "android");
 
diff --git a/mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java b/mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java
index fe189ab8..60f428c5 100644
--- a/mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java
+++ b/mobile/src/com/cradle/iitc_mobile/IITC_WebViewClient.java
@@ -6,14 +6,17 @@ import android.content.SharedPreferences;
 import android.content.res.AssetManager;
 import android.net.Uri;
 import android.net.http.SslError;
+import android.os.Environment;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.webkit.SslErrorHandler;
 import android.webkit.WebResourceResponse;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
+import android.widget.Toast;
 
 import java.io.ByteArrayInputStream;
+import java.io.File;
 import java.io.InputStream;
 import java.io.IOException;
 import java.net.URL;
@@ -27,10 +30,13 @@ public class IITC_WebViewClient extends WebViewClient {
 
     private WebResourceResponse iitcjs;
     private String js = null;
+    private String dev_path = null;
     Context context;
 
     public IITC_WebViewClient(Context c) {
         this.context = c;
+        this.dev_path = Environment.getExternalStorageDirectory().getPath() +
+                        "/IITC_Mobile/dev/";
         try {
             loadIITC_JS(c);
         } catch(IOException e) {
@@ -39,7 +45,9 @@ public class IITC_WebViewClient extends WebViewClient {
     }
 
     public String getIITCVersion() {
-        String header = js.substring(js.indexOf("==UserScript=="), js.indexOf("==/UserScript=="));
+        String header = "";
+        if (js != null)
+            header = js.substring(js.indexOf("==UserScript=="), js.indexOf("==/UserScript=="));
         // remove new line comments
         header = header.replace("\n//", "");
         // get a list of key-value
@@ -53,22 +61,40 @@ public class IITC_WebViewClient extends WebViewClient {
     }
 
     public void loadIITC_JS(Context c) throws java.io.IOException {
-        // in developer options, you are able to load the script from external source
+        // You are able to load the script from external source
         // if a http address is given, use script from this address. else use the local script
         SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(c);
         String iitc_source = sharedPref.getString("pref_iitc_source", "local");
         String js = "";
-        if (iitc_source.contains("http")) {
-            URL url = new URL(iitc_source);
-            js = new Scanner(url.openStream(), "UTF-8").useDelimiter("\\A").next();
+
+        // if developer mode are enabled, load all iitc script from external storage
+        if (sharedPref.getBoolean("pref_dev_checkbox", true)) {
+            File js_file = new File(dev_path + "total-conversion-build.user.js");
+            if (!js_file.exists()) {
+                Toast.makeText(context, "File " + dev_path +
+                        "total-conversion-build.user.js not found. " +
+                        "Disable developer mode or add iitc files " +
+                        "to the dev folder.", Toast.LENGTH_LONG).show();
+            } else {
+                Toast.makeText(context, "Developer mode enabled", Toast.LENGTH_SHORT).show();
+            }
+            Scanner s = null;
+            s = new Scanner(js_file).useDelimiter("\\A");
+            if (s != null) js = s.hasNext() ? s.next() : "";
         } else {
-            InputStream input;
-            input = c.getAssets().open("iitc.js");
-            int size = input.available();
-            byte[] buffer = new byte[size];
-            input.read(buffer);
-            input.close();
-            js = new String(buffer);
+            // load iitc script from web or asset folder
+            if (iitc_source.contains("http")) {
+                URL url = new URL(iitc_source);
+                js = new Scanner(url.openStream(), "UTF-8").useDelimiter("\\A").next();
+            } else {
+                InputStream input;
+                input = c.getAssets().open("total-conversion-build.user.js");
+                int size = input.available();
+                byte[] buffer = new byte[size];
+                input.read(buffer);
+                input.close();
+                js = new String(buffer);
+            }
         }
 
         this.js = js;
@@ -101,6 +127,7 @@ public class IITC_WebViewClient extends WebViewClient {
         // get the plugin preferences
         SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
         Set<String> plugin_list = sharedPref.getStringSet("pref_plugins", null);
+        boolean dev_enabled = sharedPref.getBoolean("pref_dev_checkbox", true);
 
         // iterate through all enabled plugins and load them
         if (plugin_list != null) {
@@ -114,7 +141,14 @@ public class IITC_WebViewClient extends WebViewClient {
                     Scanner s = null;
                     String src = "";
                     try {
-                        s = new Scanner(am.open("plugins/" + plugin_array[i])).useDelimiter("\\A");
+                        // load plugins from external storage if dev mode are enabled
+                        if (dev_enabled) {
+                            File js_file = new File(dev_path + "plugins/" + plugin_array[i]);
+                            s = new Scanner(js_file).useDelimiter("\\A");
+                        }
+                        else
+                            // load plugins from asset folder
+                            s = new Scanner(am.open("plugins/" + plugin_array[i])).useDelimiter("\\A");
                     } catch (IOException e2) {
                         // TODO Auto-generated catch block
                         e2.printStackTrace();
@@ -127,16 +161,23 @@ public class IITC_WebViewClient extends WebViewClient {
 
         // inject the user location script if enabled in settings
         if (sharedPref.getBoolean("pref_user_loc", false))
-            enableTracking(view);
+            enableTracking(view, dev_enabled);
     }
 
-    public void enableTracking(WebView view) {
+    public void enableTracking(WebView view, boolean dev_enabled) {
         Log.d("iitcm", "enable tracking...");
         AssetManager am = context.getAssets();
         Scanner s = null;
         String src = "";
         try {
-            s = new Scanner(am.open("user-location.user.js")).useDelimiter("\\A");
+            // load plugin from external storage if dev mode are enabled
+            if (dev_enabled) {
+                File js_file = new File(dev_path + "user-location.user.js");
+                s = new Scanner(js_file).useDelimiter("\\A");
+            }
+            else
+                // load plugin from asset folder
+                s = new Scanner(am.open("user-location.user.js")).useDelimiter("\\A");
         } catch (IOException e2) {
             // TODO Auto-generated catch block
             e2.printStackTrace();