diff --git a/app/src/main/java/org/houxg/leamonax/ui/AboutActivity.java b/app/src/main/java/org/houxg/leamonax/ui/AboutActivity.java
index 9c7c3b1..1da66c4 100644
--- a/app/src/main/java/org/houxg/leamonax/ui/AboutActivity.java
+++ b/app/src/main/java/org/houxg/leamonax/ui/AboutActivity.java
@@ -2,18 +2,39 @@ package org.houxg.leamonax.ui;
 
 import android.os.Bundle;
 import android.support.v7.widget.Toolbar;
+import android.view.View;
 import android.widget.TextView;
 
+import com.raizlabs.android.dbflow.config.FlowManager;
+import com.raizlabs.android.dbflow.structure.database.transaction.ProcessModelTransaction;
+import com.raizlabs.android.dbflow.structure.database.transaction.Transaction;
+
+import org.bson.types.ObjectId;
 import org.houxg.leamonax.BuildConfig;
 import org.houxg.leamonax.R;
+import org.houxg.leamonax.database.AppDataBase;
+import org.houxg.leamonax.model.Note;
+import org.houxg.leamonax.service.AccountService;
+import org.houxg.leamonax.utils.TestUtils;
+
+import java.security.SecureRandom;
+import java.util.ArrayList;
+import java.util.List;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
+import butterknife.OnClick;
+import rx.Observable;
+import rx.Subscriber;
+import rx.schedulers.Schedulers;
 
 public class AboutActivity extends BaseActivity {
 
     @BindView(R.id.tv_version)
     TextView mVersionTv;
+    @BindView(R.id.ll_debug)
+    View mDebugPanel;
+
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -23,5 +44,38 @@ public class AboutActivity extends BaseActivity {
         ButterKnife.bind(this);
 
         mVersionTv.setText(BuildConfig.VERSION_NAME);
+        mDebugPanel.setVisibility(BuildConfig.DEBUG ? View.VISIBLE : View.GONE);
     }
+
+    @OnClick(R.id.ll_generate_random_note)
+    void clickedVersion() {
+        Observable.create(
+                new Observable.OnSubscribe<Void>() {
+                    @Override
+                    public void call(Subscriber<? super Void> subscriber) {
+                        String userId = AccountService.getCurrent().getUserId();
+                        SecureRandom random = new SecureRandom();
+                        String notebookId = new ObjectId().toString();
+                        List<Note> notes = new ArrayList<>(8000);
+                        for (int i = 0; i < 5000; i++) {
+                            Note note = TestUtils.randomNote(random, notebookId, userId);
+                            notes.add(note);
+                        }
+                        ProcessModelTransaction<Note> processModelTransaction = new ProcessModelTransaction.Builder<>(
+                                new ProcessModelTransaction.ProcessModel<Note>() {
+                                    @Override
+                                    public void processModel(Note note) {
+                                        note.save();
+                                    }
+                                })
+                                .addAll(notes)
+                                .build();
+                        Transaction transaction = FlowManager.getDatabase(AppDataBase.class).beginTransactionAsync(processModelTransaction).build();
+                        transaction.execute();
+                    }
+                }).subscribeOn(Schedulers.io())
+                .subscribe();
+    }
+
+
 }
diff --git a/app/src/main/java/org/houxg/leamonax/utils/TestUtils.java b/app/src/main/java/org/houxg/leamonax/utils/TestUtils.java
new file mode 100644
index 0000000..a3bd4c7
--- /dev/null
+++ b/app/src/main/java/org/houxg/leamonax/utils/TestUtils.java
@@ -0,0 +1,52 @@
+package org.houxg.leamonax.utils;
+
+
+import org.houxg.leamonax.model.Note;
+
+import java.security.SecureRandom;
+
+public class TestUtils {
+
+    private static final char[] CHARS = "abcdefghijklmnopqrstuvwxyz".toCharArray();
+
+    public static Note randomNote(SecureRandom random, String notebookId, String userId) {
+        Note note = new Note();
+        note.setTitle(randomSentence(random));
+        note.setContent(randomParagraph(random));
+        note.setUserId(userId);
+        note.setNoteBookId(notebookId);
+        return note;
+    }
+
+    public static String randomWord(SecureRandom random) {
+        int len = random.nextInt(10) + 1;
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < len; i++) {
+            builder.append(CHARS[random.nextInt(CHARS.length)]);
+        }
+        return builder.toString();
+    }
+
+    public static String randomSentence(SecureRandom random) {
+        int len = random.nextInt(20) + 2;
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < len; i++) {
+            builder.append(randomWord(random));
+            builder.append(' ');
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+
+    public static String randomParagraph(SecureRandom random) {
+        int len = random.nextInt(10) + 2;
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < len; i++) {
+            builder.append(randomSentence(random));
+            builder.append(random.nextBoolean() ? ',' : ".");
+            builder.append(' ');
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+}
diff --git a/app/src/main/res/layout/activity_about.xml b/app/src/main/res/layout/activity_about.xml
index 932fbfb..cecbfa5 100644
--- a/app/src/main/res/layout/activity_about.xml
+++ b/app/src/main/res/layout/activity_about.xml
@@ -105,6 +105,28 @@
 
             <include layout="@layout/divider" />
 
+            <LinearLayout
+                android:id="@+id/ll_debug"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+
+                <LinearLayout
+                    android:id="@+id/ll_generate_random_note"
+                    style="@style/SettingsPanel"
+                    android:orientation="vertical">
+
+                    <TextView
+                        style="@style/SettingsSecondaryText"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="Generate random note" />
+
+                </LinearLayout>
+
+                <include layout="@layout/divider" />
+
+            </LinearLayout>
+
         </LinearLayout>
     </ScrollView>
 </LinearLayout>