diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a038950d..04955f5da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 * (iOS) Check if file contents for `pn-actions.json` exists before attempting to use it.
     * Resolves [#512](https://github.com/dpa99c/cordova-plugin-firebasex/issues/512).
     * Bug introduced by PR [#482](https://github.com/dpa99c/cordova-plugin-firebasex/pull/482).
+* (Android) Add the Firebase Performance Monitoring Gradle plugin to monitor network traffic.
+    * Resolves [#520](https://github.com/dpa99c/cordova-plugin-firebasex/issues/520).
 
 # Version 11.0.1
 * (iOS) Set the Sign In with Apple capability based on the `IOS_ENABLE_APPLE_SIGNIN` plugin variable.
diff --git a/README.md b/README.md
index ab9cf3678..f9b475679 100644
--- a/README.md
+++ b/README.md
@@ -213,11 +213,13 @@ The following plugin variables are used to specify the Firebase SDK versions as
 - `ANDROID_FIREBASE_CRASHLYTICS_VERSION`
 - `ANDROID_FIREBASE_CRASHLYTICS_NDK_VERSION`
 - `ANDROID_GSON_VERSION`
+- `ANDROID_FIREBASE_PERF_GRADLE_PLUGIN_VERSION`
 See [Specifying Android library versions](#specifying-android-library-versions) for more info.
 
 - `ANDROID_ICON_ACCENT` - sets the default accent color for system notifications. See [Android Notification Color](#android-notification-color) for more info.
 - `ANDROID_FIREBASE_CONFIG_FILEPATH` - sets a custom filepath to `google-services.json` file as a path relative to the project root
     - e.g. `--variable ANDROID_FIREBASE_CONFIG_FILEPATH="resources/android/google-services.json"`
+- `ANDROID_FIREBASE_PERF_GRADLE_PLUGIN_VERSION` - overrides the default version of the [Firebase Performance Monitoring Gradle plugin for Android](https://firebase.google.com/docs/perf-mon/get-started-android?authuser=0#add-perfmon-plugin)
 
 ### iOS only
 - `IOS_STRIP_DEBUG` - prevents symbolification of all libraries included via Cocoapods. See [Strip debug symbols](#strip-debug-symbols) for more info.
diff --git a/plugin.xml b/plugin.xml
index 4647cb4db..6a63e7dec 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -70,6 +70,7 @@
 		<preference name="ANDROID_FIREBASE_CRASHLYTICS_VERSION" default="17.2.1" />
 		<preference name="ANDROID_FIREBASE_CRASHLYTICS_NDK_VERSION" default="17.2.1" />
 		<preference name="ANDROID_GSON_VERSION" default="2.8.6" />
+		<preference name="ANDROID_FIREBASE_PERF_GRADLE_PLUGIN_VERSION" default="1.3.1" />
 
 		<framework src="com.google.android.gms:play-services-tagmanager:$ANDROID_PLAY_SERVICES_TAGMANAGER_VERSION" />
 		<framework src="com.google.android.gms:play-services-auth:$ANDROID_PLAY_SERVICES_AUTH_VERSION" />
diff --git a/scripts/after_prepare.js b/scripts/after_prepare.js
index 3fae713ba..433a574e3 100644
--- a/scripts/after_prepare.js
+++ b/scripts/after_prepare.js
@@ -9,7 +9,7 @@
  */
 var fs = require('fs');
 var path = require("path");
-var Utilities = require("./lib/utilities");
+var utilities = require("./lib/utilities");
 
 var appName;
 var pluginVariables = {};
@@ -21,8 +21,8 @@ var PLUGIN_ID;
 var PLATFORM;
 
 var setupEnv = function(){
-    appName = Utilities.getAppName();
-    PLUGIN_ID = Utilities.getPluginId();
+    appName = utilities.getAppName();
+    PLUGIN_ID = utilities.getPluginId();
     PLATFORM = {
         IOS: {
             dest: IOS_DIR + '/' + appName + '/Resources/GoogleService-Info.plist',
@@ -44,8 +44,12 @@ var setupEnv = function(){
                 ANDROID_DIR + '/app/src/main/google-services.json'
             ],
             colorsXml: {
-                src: './plugins/' + Utilities.getPluginId() + '/src/android/colors.xml',
+                src: './plugins/' + utilities.getPluginId() + '/src/android/colors.xml',
                 target: ANDROID_DIR + '/app/src/main/res/values/colors.xml'
+            },
+            performanceGradlePlugin: {
+                classDef: 'com.google.firebase:perf-plugin',
+                pluginDef: 'com.google.firebase.firebase-perf'
             }
         }
     };
@@ -54,10 +58,10 @@ var setupEnv = function(){
 module.exports = function(context){
     //get platform from the context supplied by cordova
     var platforms = context.opts.platforms;
-    Utilities.setContext(context);
+    utilities.setContext(context);
     setupEnv();
 
-    pluginVariables = Utilities.parsePluginVariables();
+    pluginVariables = utilities.parsePluginVariables();
 
     // set platform key path from plugin variable
     if(pluginVariables.ANDROID_FIREBASE_CONFIG_FILEPATH) PLATFORM.ANDROID.src = [pluginVariables.ANDROID_FIREBASE_CONFIG_FILEPATH];
@@ -65,15 +69,18 @@ module.exports = function(context){
 
 
     // Copy key files to their platform specific folders
-    if(platforms.indexOf('android') !== -1 && Utilities.directoryExists(ANDROID_DIR)){
-        Utilities.log('Preparing Firebase on Android');
-        Utilities.copyKey(PLATFORM.ANDROID);
+    if(platforms.indexOf('android') !== -1 && utilities.directoryExists(ANDROID_DIR)){
+        utilities.log('Preparing Firebase on Android');
+        utilities.copyKey(PLATFORM.ANDROID);
 
+        var androidHelper = require("./lib/android");
+
+        // Apply colours
         if(!fs.existsSync(path.resolve(PLATFORM.ANDROID.colorsXml.target))){
             fs.copyFileSync(path.resolve(PLATFORM.ANDROID.colorsXml.src), path.resolve(PLATFORM.ANDROID.colorsXml.target));
         }
 
-        const $colorsXml = Utilities.parseXmlFileToJson(PLATFORM.ANDROID.colorsXml.target, {compact: true});
+        const $colorsXml = utilities.parseXmlFileToJson(PLATFORM.ANDROID.colorsXml.target, {compact: true});
         var accentColor = pluginVariables.ANDROID_ICON_ACCENT,
             $resources = $colorsXml.resources,
             existingAccent = false,
@@ -113,14 +120,18 @@ module.exports = function(context){
         }
 
         if(writeChanges){
-            Utilities.writeJsonToXmlFile($colorsXml, PLATFORM.ANDROID.colorsXml.target);
-            Utilities.log('Updated colors.xml with accent color');
+            utilities.writeJsonToXmlFile($colorsXml, PLATFORM.ANDROID.colorsXml.target);
+            utilities.log('Updated colors.xml with accent color');
         }
+
+        // Add Performance Monitoring gradle plugin for Android network traffic
+        androidHelper.addDependencyToRootGradle(PLATFORM.ANDROID.performanceGradlePlugin.classDef+":"+pluginVariables["ANDROID_FIREBASE_PERF_GRADLE_PLUGIN_VERSION"]);
+        androidHelper.applyPluginToAppGradle(PLATFORM.ANDROID.performanceGradlePlugin.pluginDef);
     }
 
-    if(platforms.indexOf('ios') !== -1 && Utilities.directoryExists(IOS_DIR)){
-        Utilities.log('Preparing Firebase on iOS');
-        Utilities.copyKey(PLATFORM.IOS);
+    if(platforms.indexOf('ios') !== -1 && utilities.directoryExists(IOS_DIR)){
+        utilities.log('Preparing Firebase on iOS');
+        utilities.copyKey(PLATFORM.IOS);
 
         var helper = require("./ios/helper");
         var xcodeProjectPath = helper.getXcodeProjectPath();
diff --git a/scripts/lib/android.js b/scripts/lib/android.js
new file mode 100644
index 000000000..d98c7bac5
--- /dev/null
+++ b/scripts/lib/android.js
@@ -0,0 +1,37 @@
+/**
+ * Android-specific utilities
+ */
+const fs = require('fs');
+const path = require('path');
+const utilities = require("./utilities");
+
+const ANDROID_PROJECT_ROOT = 'platforms/android';
+const ROOT_GRADLE_FILEPATH = ANDROID_PROJECT_ROOT + '/build.gradle';
+const APP_GRADLE_FILEPATH = ANDROID_PROJECT_ROOT + '/app/build.gradle';
+
+const gradleDependencyTemplate = "classpath '{artifactDef}'";
+const applyPluginTemplate = "apply plugin: '{pluginDef}'";
+
+const Android = {};
+
+Android.addDependencyToRootGradle = function(artifactDef){
+    const gradleDependency = gradleDependencyTemplate.replace("{artifactDef}", artifactDef);
+    let rootGradle = fs.readFileSync(path.resolve(ROOT_GRADLE_FILEPATH)).toString();
+    if(rootGradle.match(gradleDependency)) return; // already exists
+
+    rootGradle = rootGradle.replace("dependencies {", "dependencies {\n"+gradleDependency);
+    fs.writeFileSync(path.resolve(ROOT_GRADLE_FILEPATH), rootGradle);
+    utilities.log("Added dependency to root gradle: " + artifactDef);
+};
+
+Android.applyPluginToAppGradle = function(pluginDef){
+    const applyPlugin = applyPluginTemplate.replace("{pluginDef}", pluginDef);
+    let appGradle = fs.readFileSync(path.resolve(APP_GRADLE_FILEPATH)).toString();
+    if(appGradle.match(applyPlugin)) return; // already exists
+
+    appGradle += "\n"+applyPlugin;
+    fs.writeFileSync(path.resolve(APP_GRADLE_FILEPATH), appGradle);
+    utilities.log("Applied plugin to app gradle: " + pluginDef);
+};
+
+module.exports = Android;