diff --git a/.gitignore b/.gitignore
index 87ec63472..fcef01a5e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@
 .idea
 /captures
 release
+app/google-services.json
diff --git a/app/build.gradle b/app/build.gradle
index 5a555d455..66fac6844 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'com.google.gms.google-services'
 apply plugin: 'android-chinese-string'
 
 android {
@@ -64,6 +65,7 @@ dependencies {
     implementation "com.android.support:appcompat-v7:$supportLibrary"
     implementation "com.android.support:cardview-v7:$supportLibrary"
     implementation "com.android.support:design:$supportLibrary"
+    implementation 'com.google.firebase:firebase-core:16.0.4'
     implementation 'com.github.amlcurran.showcaseview:library:5.4.3'
     implementation 'com.github.seven332:android-recaptcha:2bbb3459a8'
     implementation 'com.github.seven332:android-resource:0.1.0'
diff --git a/app/libs/libGoogleAnalyticsServices.jar b/app/libs/libGoogleAnalyticsServices.jar
deleted file mode 100644
index 082a9180e..000000000
Binary files a/app/libs/libGoogleAnalyticsServices.jar and /dev/null differ
diff --git a/app/src/main/java/com/hippo/ehviewer/Analytics.java b/app/src/main/java/com/hippo/ehviewer/Analytics.java
index 561eeb012..2390e38d4 100644
--- a/app/src/main/java/com/hippo/ehviewer/Analytics.java
+++ b/app/src/main/java/com/hippo/ehviewer/Analytics.java
@@ -17,8 +17,7 @@
 package com.hippo.ehviewer;
 
 import android.content.Context;
-
-import com.google.analytics.tracking.android.EasyTracker;
+import com.google.firebase.analytics.FirebaseAnalytics;
 
 
 public final class Analytics {
@@ -26,6 +25,6 @@ public final class Analytics {
     private Analytics() {}
 
     public static void start(Context context) {
-        EasyTracker.getInstance(context).set("&uid", Settings.getUserID());
+        FirebaseAnalytics.getInstance(context).setUserId(Settings.getUserID());
     }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java
index 287377ee5..0da056498 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/EhActivity.java
@@ -22,7 +22,7 @@ import android.support.annotation.Nullable;
 import android.support.annotation.StyleRes;
 import android.support.v7.app.AppCompatActivity;
 import android.view.WindowManager;
-import com.google.analytics.tracking.android.EasyTracker;
+import com.google.firebase.analytics.FirebaseAnalytics;
 import com.hippo.content.ContextLocalWrapper;
 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.Settings;
@@ -30,8 +30,6 @@ import java.util.Locale;
 
 public abstract class EhActivity extends AppCompatActivity {
 
-    private boolean mTrackStarted;
-
     @StyleRes
     protected abstract int getThemeResId(int theme);
 
@@ -42,6 +40,10 @@ public abstract class EhActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
 
         ((EhApplication) getApplication()).registerActivity(this);
+
+        if (Settings.getEnableAnalytics()) {
+            FirebaseAnalytics.getInstance(this);
+        }
     }
 
     @Override
@@ -51,26 +53,6 @@ public abstract class EhActivity extends AppCompatActivity {
         ((EhApplication) getApplication()).unregisterActivity(this);
     }
 
-    @Override
-    public void onStart() {
-        super.onStart();
-
-        if (Settings.getEnableAnalytics()) {
-            EasyTracker.getInstance(this).activityStart(this);
-            mTrackStarted = true;
-        }
-    }
-
-    @Override
-    public void onStop() {
-        super.onStop();
-
-        if (mTrackStarted) {
-            EasyTracker.getInstance(this).activityStop(this);
-            mTrackStarted = false;
-        }
-    }
-
     @Override
     protected void onResume() {
         super.onResume();
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/EhPreferenceActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/EhPreferenceActivity.java
index 9629fb2e2..4eb978ed7 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/EhPreferenceActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/EhPreferenceActivity.java
@@ -22,7 +22,7 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.annotation.StyleRes;
 import android.view.WindowManager;
-import com.google.analytics.tracking.android.EasyTracker;
+import com.google.firebase.analytics.FirebaseAnalytics;
 import com.hippo.app.PrettyPreferenceActivity;
 import com.hippo.content.ContextLocalWrapper;
 import com.hippo.ehviewer.EhApplication;
@@ -31,8 +31,6 @@ import java.util.Locale;
 
 public abstract class EhPreferenceActivity extends PrettyPreferenceActivity {
 
-    private boolean mTrackStarted;
-
     @StyleRes
     protected abstract int getThemeResId(int theme);
 
@@ -43,6 +41,10 @@ public abstract class EhPreferenceActivity extends PrettyPreferenceActivity {
         super.onCreate(savedInstanceState);
 
         ((EhApplication) getApplication()).registerActivity(this);
+
+        if (Settings.getEnableAnalytics()) {
+            FirebaseAnalytics.getInstance(this);
+        }
     }
 
     @Override
@@ -52,26 +54,6 @@ public abstract class EhPreferenceActivity extends PrettyPreferenceActivity {
         ((EhApplication) getApplication()).unregisterActivity(this);
     }
 
-    @Override
-    public void onStart() {
-        super.onStart();
-
-        if (Settings.getEnableAnalytics()) {
-            EasyTracker.getInstance(this).activityStart(this);
-            mTrackStarted = true;
-        }
-    }
-
-    @Override
-    public void onStop() {
-        super.onStop();
-
-        if (mTrackStarted) {
-            EasyTracker.getInstance(this).activityStop(this);
-            mTrackStarted = false;
-        }
-    }
-
     @Override
     protected void onResume() {
         super.onResume();
diff --git a/build.gradle b/build.gradle
index 9ee2fc7bc..94c206a95 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,6 +8,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.google.gms:google-services:4.0.1'
         classpath 'com.github.seven332:android-chinese-string-gradle-plugin:0.1.0'
 
         // NOTE: Do not place your application dependencies here; they belong