diff --git a/app/build.gradle b/app/build.gradle
index 63447151..d5233697 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,11 +2,13 @@ buildscript {
     repositories {
         maven { url "https://plugins.gradle.org/m2/" }
         maven { url 'https://maven.fabric.io/public' }
+        google()
     }
 
     dependencies {
         classpath "org.greenrobot:greendao-gradle-plugin:$greenDaoGradle"
         classpath "io.fabric.tools:gradle:$fabricGradle"
+        classpath "com.google.gms:oss-licenses:0.9.2"
     }
 }
 
@@ -19,6 +21,7 @@ apply plugin: 'org.greenrobot.greendao'
 apply plugin: 'io.fabric'
 apply from: '../jacoco.gradle'
 apply from: '../android-sonarqube.gradle'
+apply plugin: 'com.google.gms.oss.licenses.plugin'
 
 android {
     compileSdkVersion 26
@@ -87,6 +90,7 @@ dependencies {
     implementation "com.google.dagger:dagger-android-support:$dagger2"
     implementation "com.aurelhubert:ahbottomnavigation:$ahbottom"
     implementation "com.jakewharton.threetenabp:threetenabp:$threeTenABP"
+    implementation "com.google.android.gms:play-services-oss-licenses:$ossLicenses"
 
     implementation("com.crashlytics.sdk.android:crashlytics:$crashlyticsSdk@aar") {
         transitive = true
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 2abcf5e7..2c556741 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -40,6 +40,12 @@
             android:label="@string/activity_dashboard_text"
             android:launchMode="singleTop"
             android:theme="@style/WulkanowyTheme" />
+        <activity
+            android:name="com.google.android.gms.oss.licenses.OssLicensesMenuActivity"
+            android:theme="@style/WulkanowyTheme.LoginTheme" />
+        <activity
+            android:name="com.google.android.gms.oss.licenses.OssLicensesActivity"
+            android:theme="@style/WulkanowyTheme.LoginTheme" />
 
         <service
             android:name=".services.jobs.SyncJob"
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Exam.java b/app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Exam.java
index 89913c49..076846e1 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Exam.java
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Exam.java
@@ -165,9 +165,7 @@ public class Exam implements Serializable {
         myDao.update(this);
     }
 
-    /**
-     * called by internal mechanisms, do not call yourself.
-     */
+    /** called by internal mechanisms, do not call yourself. */
     @Generated(hash = 1730563422)
     public void __setDaoSession(DaoSession daoSession) {
         this.daoSession = daoSession;
diff --git a/app/src/main/java/io/github/wulkanowy/ui/main/settings/AboutScreen.java b/app/src/main/java/io/github/wulkanowy/ui/main/settings/AboutScreen.java
new file mode 100644
index 00000000..fe677de4
--- /dev/null
+++ b/app/src/main/java/io/github/wulkanowy/ui/main/settings/AboutScreen.java
@@ -0,0 +1,67 @@
+package io.github.wulkanowy.ui.main.settings;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v7.preference.Preference;
+import android.widget.Toast;
+
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity;
+
+import io.github.wulkanowy.BuildConfig;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.utils.AppConstant;
+
+public class AboutScreen extends SettingsFragment {
+
+    public static final String SHARED_KEY_ABOUT_VERSION = "about_version";
+
+    public static final String SHARED_KEY_ABOUT_LICENSES = "about_osl";
+
+    public static final String SHARED_KEY_ABOUT_REPO = "about_repo";
+
+    private Preference.OnPreferenceClickListener onProgrammerListener = new Preference.OnPreferenceClickListener() {
+        private int clicks = 0;
+
+        @Override
+        public boolean onPreferenceClick(Preference preference) {
+            Toast.makeText(getActivity(), getVersionToast(clicks++), Toast.LENGTH_SHORT).show();
+            return true;
+        }
+
+        private int getVersionToast(int click) {
+            if (0 == click) {
+                return R.string.about_programmer_step1;
+            }
+
+            if (1 == click) {
+                return R.string.about_programmer_step2;
+            }
+
+            if (9 > click) {
+                return R.string.about_programmer_step3;
+            }
+
+            return R.string.about_programmer;
+        }
+    };
+
+    public AboutScreen() {
+        // silence is golden
+    }
+
+    @Override
+    public void onCreate(final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        findPreference(SHARED_KEY_ABOUT_VERSION).setSummary(BuildConfig.VERSION_NAME);
+        findPreference(SHARED_KEY_ABOUT_VERSION).setOnPreferenceClickListener(onProgrammerListener);
+        findPreference(SHARED_KEY_ABOUT_REPO).setIntent(new Intent(Intent.ACTION_VIEW, Uri.parse(AppConstant.REPO_URL)));
+        findPreference(SHARED_KEY_ABOUT_LICENSES).setIntent(new Intent(getActivity(), OssLicensesMenuActivity.class)
+                .putExtra("title", getString(R.string.pref_about_osl)));
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle bundle, String rootKey) {
+        setPreferencesFromResource(R.xml.preferences, rootKey);
+    }
+}
diff --git a/app/src/main/java/io/github/wulkanowy/ui/main/settings/SettingsFragment.java b/app/src/main/java/io/github/wulkanowy/ui/main/settings/SettingsFragment.java
index 8b53f077..e08a4902 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/main/settings/SettingsFragment.java
+++ b/app/src/main/java/io/github/wulkanowy/ui/main/settings/SettingsFragment.java
@@ -2,13 +2,17 @@ package io.github.wulkanowy.ui.main.settings;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
 import android.support.v7.preference.PreferenceFragmentCompat;
+import android.support.v7.preference.PreferenceScreen;
 
 import io.github.wulkanowy.R;
 import io.github.wulkanowy.services.jobs.SyncJob;
 
 public class SettingsFragment extends PreferenceFragmentCompat
-        implements SharedPreferences.OnSharedPreferenceChangeListener {
+        implements SharedPreferences.OnSharedPreferenceChangeListener,
+        PreferenceFragmentCompat.OnPreferenceStartScreenCallback{
 
     public static final String SHARED_KEY_START_TAB = "startup_tab";
 
@@ -29,6 +33,31 @@ public class SettingsFragment extends PreferenceFragmentCompat
         addPreferencesFromResource(R.xml.preferences);
     }
 
+    @Override
+    public void onCreate(final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public Fragment getCallbackFragment() {
+        return this;
+    }
+
+    @Override
+    public boolean onPreferenceStartScreen(PreferenceFragmentCompat preferenceFragmentCompat,
+                                           PreferenceScreen preferenceScreen) {
+        FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
+        AboutScreen fragment = new AboutScreen();
+        Bundle args = new Bundle();
+        args.putString(PreferenceFragmentCompat.ARG_PREFERENCE_ROOT, preferenceScreen.getKey());
+        fragment.setArguments(args);
+        ft.add(R.id.main_activity_container, fragment, preferenceScreen.getKey());
+        ft.addToBackStack(preferenceScreen.getKey());
+        ft.commit();
+
+        return true;
+    }
+
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
         if (key.equals(SHARED_KEY_SERVICES_ENABLE) || key.equals(SHARED_KEY_SERVICES_INTERVAL)
diff --git a/app/src/main/java/io/github/wulkanowy/utils/AppConstant.java b/app/src/main/java/io/github/wulkanowy/utils/AppConstant.java
index 27d76e75..2499974d 100644
--- a/app/src/main/java/io/github/wulkanowy/utils/AppConstant.java
+++ b/app/src/main/java/io/github/wulkanowy/utils/AppConstant.java
@@ -19,6 +19,8 @@ public final class AppConstant {
 
     public static final String DATE_PATTERN = "yyyy-MM-dd";
 
+    public static final String REPO_URL = "https://github.com/wulkanowy/wulkanowy";
+
     private AppConstant() {
         throw new IllegalStateException("Utility class");
     }
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 41eda273..942dc431 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -135,6 +135,18 @@
     <string name="pref_services_interval">Interwał między odświeżaniem danych</string>
     <string name="pref_services_mobile_data">Synchronizacja tylko przez WiFi</string>
 
+    <string name="pref_about_header">O aplikacji</string>
+    <string name="pref_about">Informacje o Wulkanowym</string>
+    <string name="pref_about_summary">Wulkanowy to nieoficjalny klient dziennika VULCAN UONET+</string>
+    <string name="pref_about_version">Wersja</string>
+    <string name="pref_about_osl">Licencje open source</string>
+    <string name="pref_about_osl_summary">Szczegóły licencji na oprogramowanie open source</string>
+    <string name="pref_about_support">Kod źródłowy i feedback</string>
+    <string name="about_programmer_step1">Nie, nie zostaniesz programistą!</string>
+    <string name="about_programmer_step2">Musisz bardziej się postarać!</string>
+    <string name="about_programmer_step3">Kliknij jeszcze parę razy</string>
+    <string name="about_programmer">Odwiedź zakładkę Kod źródłowy i pokaż jaki z ciebie programista!</string>
+
     <string name="notify_grade_channel">Nowe oceny</string>
     <string name="widget_timetable_no_lesson">Brak lekcji</string>
     <string name="widget_timetable_today">Dziś</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 63059283..2130120e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -130,6 +130,18 @@
     <string name="pref_services_interval">Interval between data refreshing</string>
     <string name="pref_services_mobile_data">Synchronization via WiFi only</string>
 
+    <string name="pref_about_header">About</string>
+    <string name="pref_about">About Wulkanowy</string>
+    <string name="pref_about_summary">Wulkanowy is an unofficial VULCAN UONET+ log client</string>
+    <string name="pref_about_version">Version</string>
+    <string name="pref_about_osl">Open source licenses</string>
+    <string name="pref_about_osl_summary">License details for open source software</string>
+    <string name="pref_about_support">Source code &amp; feedback</string>
+    <string name="about_programmer_step1">No, you will not become a programmer!</string>
+    <string name="about_programmer_step2">You must try harder!</string>
+    <string name="about_programmer_step3">Click a few more times</string>
+    <string name="about_programmer">Visit the Source code tab and show how good a programmer you are!</string>
+
     <string name="notify_grade_channel">New grades</string>
     <string name="widget_timetable_no_lesson">No lessons</string>
     <string name="widget_timetable_today">Today</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 07ec7664..d72afb53 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -6,7 +6,7 @@
         <item name="colorAccent">@color/colorPrimary</item>
         <item name="actionMenuTextColor">@android:color/primary_text_dark</item>
         <item name="android:textColorPrimary">@android:color/primary_text_light</item>
-        <item name="android:textColorSecondary">@android:color/primary_text_light</item>
+        <item name="android:textColorSecondary">@android:color/secondary_text_light</item>
         <item name="android:textColorSecondaryInverse">@android:color/primary_text_dark</item>
         <item name="android:textColorTertiary">@android:color/primary_text_light</item>
         <item name="android:textColorTertiaryInverse">@android:color/primary_text_dark</item>
@@ -16,7 +16,7 @@
         <item name="preferenceTheme">@style/PreferenceThemeOverlay.v14.Material</item>
     </style>
 
-    <style name="WulkanowyTheme.LoginTheme" parent="@style/Theme.AppCompat.Light">
+    <style name="WulkanowyTheme.LoginTheme" parent="@style/Theme.AppCompat.Light.DarkActionBar">
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorPrimary</item>
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 46a4b94a..a2b1b368 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -45,4 +45,27 @@
             android:key="notify_enable"
             android:title="@string/pref_notify_switch" />
     </PreferenceCategory>
+    <PreferenceCategory android:title="@string/pref_about_header">
+        <PreferenceScreen
+            android:key="pref_about"
+            android:title="@string/pref_about"
+            android:persistent="false">
+            <PreferenceCategory android:title="@string/pref_about">
+                <Preference
+                    android:selectable="false"
+                    android:summary="@string/pref_about_summary"/>
+                <Preference
+                    android:key="about_version"
+                    android:title="@string/pref_about_version"/>
+                <Preference
+                    android:key="about_osl"
+                    android:title="@string/pref_about_osl"
+                    android:summary="@string/pref_about_osl_summary"/>
+                <Preference
+                    android:key="about_repo"
+                    android:title="@string/pref_about_support">
+                </Preference>
+            </PreferenceCategory>
+        </PreferenceScreen>
+    </PreferenceCategory>
 </PreferenceScreen>
diff --git a/build.gradle b/build.gradle
index a73e0016..3fbed0fd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,6 @@ buildscript {
 }
 
 plugins {
-
     // gradle dependencyUpdates -Drevision=release
     id "com.github.ben-manes.versions" version "0.17.0"
 }
@@ -45,10 +44,11 @@ ext {
     greenDaoGradle = "3.2.2"
     butterknife = "8.8.1"
     threeTenABP = "1.1.0"
-    dagger2 = "2.15"
+    dagger2 = "2.16"
     ahbottom = "2.2.0"
     jsoup = "1.11.3"
     gson = "2.8.4"
+    ossLicenses = "15.0.1"
 
     debugDb = "1.0.3"
     sqlcipher = "3.5.9"