diff --git a/app/build.gradle b/app/build.gradle
index 580d069a7..2b4c6818c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -154,6 +154,8 @@ dependencies {
     implementation "androidx.work:work-rxjava2:$work_manager"
     implementation "androidx.work:work-gcm:$work_manager"
 
+    implementation 'com.github.PaulinaSadowska:RxWorkManagerObservers:1.0.0'
+
     implementation "androidx.room:room-runtime:$room"
     implementation "androidx.room:room-rxjava2:$room"
     implementation "androidx.room:room-ktx:$room"
diff --git a/app/src/main/java/io/github/wulkanowy/services/sync/SyncManager.kt b/app/src/main/java/io/github/wulkanowy/services/sync/SyncManager.kt
index 3d0cbcf63..dda2abe0c 100644
--- a/app/src/main/java/io/github/wulkanowy/services/sync/SyncManager.kt
+++ b/app/src/main/java/io/github/wulkanowy/services/sync/SyncManager.kt
@@ -5,18 +5,24 @@ import android.os.Build.VERSION_CODES.O
 import androidx.core.app.NotificationManagerCompat
 import androidx.work.BackoffPolicy.EXPONENTIAL
 import androidx.work.Constraints
+import androidx.work.Data
 import androidx.work.ExistingPeriodicWorkPolicy.KEEP
 import androidx.work.ExistingPeriodicWorkPolicy.REPLACE
+import androidx.work.ExistingWorkPolicy
 import androidx.work.NetworkType.CONNECTED
 import androidx.work.NetworkType.UNMETERED
+import androidx.work.OneTimeWorkRequestBuilder
 import androidx.work.PeriodicWorkRequestBuilder
+import androidx.work.WorkInfo
 import androidx.work.WorkManager
+import com.paulinasadowska.rxworkmanagerobservers.extensions.getWorkInfoByIdObservable
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.db.SharedPrefProvider.Companion.APP_VERSION_CODE_KEY
 import io.github.wulkanowy.data.repositories.preferences.PreferencesRepository
 import io.github.wulkanowy.services.sync.channels.Channel
 import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.isHolidays
+import io.reactivex.Observable
 import org.threeten.bp.LocalDate.now
 import timber.log.Timber
 import java.util.concurrent.TimeUnit.MINUTES
@@ -42,13 +48,13 @@ class SyncManager @Inject constructor(
         }
 
         if (sharedPrefProvider.getLong(APP_VERSION_CODE_KEY, -1L) != appInfo.versionCode.toLong()) {
-            startSyncWorker(true)
+            startPeriodicSyncWorker(true)
             sharedPrefProvider.putLong(APP_VERSION_CODE_KEY, appInfo.versionCode.toLong(), true)
         }
         Timber.i("SyncManager was initialized")
     }
 
-    fun startSyncWorker(restart: Boolean = false) {
+    fun startPeriodicSyncWorker(restart: Boolean = false) {
         if (preferencesRepository.isServiceEnabled && !now().isHolidays) {
             workManager.enqueueUniquePeriodicWork(SyncWorker::class.java.simpleName, if (restart) REPLACE else KEEP,
                 PeriodicWorkRequestBuilder<SyncWorker>(preferencesRepository.servicesInterval, MINUTES)
@@ -61,6 +67,19 @@ class SyncManager @Inject constructor(
         }
     }
 
+    fun startOneTimeSyncWorker(): Observable<WorkInfo> {
+        val work = OneTimeWorkRequestBuilder<SyncWorker>()
+            .setInputData(
+                Data.Builder()
+                    .putBoolean("one_time", true)
+                    .build()
+            )
+            .build()
+
+        workManager.enqueueUniqueWork("${SyncWorker::class.java.simpleName}_one_time", ExistingWorkPolicy.REPLACE, work)
+        return workManager.getWorkInfoByIdObservable(work.id)
+    }
+
     fun stopSyncWorker() {
         workManager.cancelUniqueWork(SyncWorker::class.java.simpleName)
     }
diff --git a/app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt b/app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt
index 68702d9a9..8a38fa557 100644
--- a/app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt
+++ b/app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt
@@ -1,10 +1,12 @@
 package io.github.wulkanowy.services.sync
 
 import android.content.Context
+import android.os.Build.VERSION_CODES.LOLLIPOP
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationCompat.BigTextStyle
 import androidx.core.app.NotificationCompat.PRIORITY_DEFAULT
 import androidx.core.app.NotificationManagerCompat
+import androidx.work.Data
 import androidx.work.ListenableWorker
 import androidx.work.RxWorker
 import androidx.work.WorkerParameters
@@ -17,6 +19,7 @@ import io.github.wulkanowy.data.repositories.student.StudentRepository
 import io.github.wulkanowy.sdk.exception.FeatureDisabledException
 import io.github.wulkanowy.services.sync.channels.DebugChannel
 import io.github.wulkanowy.services.sync.works.Work
+import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.getCompatColor
 import io.reactivex.Completable
 import io.reactivex.Single
@@ -30,7 +33,8 @@ class SyncWorker @AssistedInject constructor(
     private val semesterRepository: SemesterRepository,
     private val works: Set<@JvmSuppressWildcards Work>,
     private val preferencesRepository: PreferencesRepository,
-    private val notificationManager: NotificationManagerCompat
+    private val notificationManager: NotificationManagerCompat,
+    private val appInfo: AppInfo
 ) : RxWorker(appContext, workerParameters) {
 
     override fun createWork(): Single<Result> {
@@ -52,8 +56,15 @@ class SyncWorker @AssistedInject constructor(
             .toSingleDefault(Result.success())
             .onErrorReturn {
                 Timber.e(it, "There was an error during synchronization")
-                if (it is FeatureDisabledException) Result.success()
-                else Result.retry()
+                when {
+                    it is FeatureDisabledException -> Result.success()
+                    inputData.getBoolean("one_time", false) -> {
+                        Result.failure(Data.Builder()
+                            .putString("error", it.toString())
+                            .build())
+                    }
+                    else -> Result.retry()
+                }
             }
             .doOnSuccess {
                 if (preferencesRepository.isDebugNotificationEnable) notify(it)
@@ -64,7 +75,7 @@ class SyncWorker @AssistedInject constructor(
     private fun notify(result: Result) {
         notificationManager.notify(Random.nextInt(Int.MAX_VALUE), NotificationCompat.Builder(applicationContext, DebugChannel.CHANNEL_ID)
             .setContentTitle("Debug notification")
-            .setSmallIcon(R.drawable.ic_more_settings)
+            .setSmallIcon(R.drawable.ic_stat_push)
             .setAutoCancel(true)
             .setColor(applicationContext.getCompatColor(R.color.colorPrimary))
             .setStyle(BigTextStyle().bigText("${SyncWorker::class.java.simpleName} result: $result"))
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt
index e6c299171..f5a490044 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt
@@ -33,7 +33,7 @@ class MainPresenter @Inject constructor(
             Timber.i("Main view was initialized with $startMenuIndex menu index and $startMenuMoreIndex more index")
         }
 
-        syncManager.startSyncWorker()
+        syncManager.startPeriodicSyncWorker()
         analytics.logEvent("app_open", "destination" to initMenu?.name)
     }
 
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
index 03a89d274..5a8593a06 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsFragment.kt
@@ -3,6 +3,7 @@ package io.github.wulkanowy.ui.modules.settings
 import android.content.Context
 import android.content.SharedPreferences
 import android.os.Bundle
+import androidx.appcompat.app.AlertDialog
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import com.yariksoffice.lingver.Lingver
@@ -33,11 +34,24 @@ class SettingsFragment : PreferenceFragmentCompat(),
 
     override val titleStringId get() = R.string.settings_title
 
+    override val syncSuccessString get() = getString(R.string.pref_services_message_sync_success)
+
+    override val syncFailedString get() = getString(R.string.pref_services_message_sync_failed)
+
     override fun onAttach(context: Context) {
         AndroidSupportInjection.inject(this)
         super.onAttach(context)
     }
 
+    override fun initView() {
+        findPreference<Preference>(getString(R.string.pref_key_services_force_sync))?.run {
+            onPreferenceClickListener = Preference.OnPreferenceClickListener {
+                presenter.onSyncNowClicked()
+                true
+            }
+        }
+    }
+
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
         presenter.onAttachView(this)
@@ -61,12 +75,19 @@ class SettingsFragment : PreferenceFragmentCompat(),
     }
 
     override fun setServicesSuspended(serviceEnablesKey: String, isHolidays: Boolean) {
-        findPreference<Preference>(serviceEnablesKey)?.apply {
+        findPreference<Preference>(serviceEnablesKey)?.run {
             summary = if (isHolidays) getString(R.string.pref_services_suspended) else ""
             isEnabled = !isHolidays
         }
     }
 
+    override fun setSyncInProgress(inProgress: Boolean) {
+        findPreference<Preference>(getString(R.string.pref_key_services_force_sync))?.run {
+            isEnabled = !inProgress
+            summary = if (inProgress) getString(R.string.pref_services_sync_in_progress) else ""
+        }
+    }
+
     override fun showError(text: String, error: Throwable) {
         (activity as? BaseActivity<*>)?.showError(text, error)
     }
@@ -87,6 +108,15 @@ class SettingsFragment : PreferenceFragmentCompat(),
         ErrorDialog.newInstance(error).show(childFragmentManager, error.toString())
     }
 
+    override fun showForceSyncDialog() {
+        AlertDialog.Builder(requireContext())
+            .setTitle(R.string.pref_services_dialog_force_sync_title)
+            .setMessage(R.string.pref_services_dialog_force_sync_summary)
+            .setPositiveButton(android.R.string.ok) { _, _ -> presenter.onForceSyncDialogSubmit() }
+            .setNegativeButton(android.R.string.cancel) { _, _ -> }
+            .show()
+    }
+
     override fun onResume() {
         super.onResume()
         preferenceScreen.sharedPreferences.registerOnSharedPreferenceChangeListener(this)
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsPresenter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsPresenter.kt
index 3f2bf714c..ce5100ea8 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsPresenter.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.settings
 
+import androidx.work.WorkInfo
 import com.chuckerteam.chucker.api.ChuckerCollector
 import io.github.wulkanowy.data.repositories.preferences.PreferencesRepository
 import io.github.wulkanowy.data.repositories.student.StudentRepository
@@ -29,6 +30,7 @@ class SettingsPresenter @Inject constructor(
         super.onAttachView(view)
         Timber.i("Settings view was initialized")
         view.setServicesSuspended(preferencesRepository.serviceEnableKey, now().isHolidays)
+        view.initView()
     }
 
     fun onSharedPreferenceChanged(key: String) {
@@ -36,8 +38,8 @@ class SettingsPresenter @Inject constructor(
 
         with(preferencesRepository) {
             when (key) {
-                serviceEnableKey -> with(syncManager) { if (isServiceEnabled) startSyncWorker() else stopSyncWorker() }
-                servicesIntervalKey, servicesOnlyWifiKey -> syncManager.startSyncWorker(true)
+                serviceEnableKey -> with(syncManager) { if (isServiceEnabled) startPeriodicSyncWorker() else stopSyncWorker() }
+                servicesIntervalKey, servicesOnlyWifiKey -> syncManager.startPeriodicSyncWorker(true)
                 isDebugNotificationEnableKey -> chuckerCollector.showNotification = isDebugNotificationEnable
                 appThemeKey -> view?.recreateView()
                 appLanguageKey -> view?.run {
@@ -49,4 +51,25 @@ class SettingsPresenter @Inject constructor(
         }
         analytics.logEvent("setting_changed", "name" to key)
     }
+
+    fun onSyncNowClicked() {
+        view?.showForceSyncDialog()
+    }
+
+    fun onForceSyncDialogSubmit() {
+        view?.run {
+            Timber.i("Setting sync now started")
+            analytics.logEvent("sync_now_started")
+            disposable.add(syncManager.startOneTimeSyncWorker()
+                .doOnSubscribe { setSyncInProgress(true) }
+                .doFinally { setSyncInProgress(false) }
+                .subscribe({ workInfo ->
+                    if (workInfo.state == WorkInfo.State.SUCCEEDED) showMessage(syncSuccessString)
+                    else if (workInfo.state == WorkInfo.State.FAILED) showError(syncFailedString, Throwable(workInfo.outputData.getString("error")))
+                }, {
+                    Timber.e("Sync now failed")
+                })
+            )
+        }
+    }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsView.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsView.kt
index e50eb47b3..4a1b0c766 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/SettingsView.kt
@@ -4,9 +4,19 @@ import io.github.wulkanowy.ui.base.BaseView
 
 interface SettingsView : BaseView {
 
+    val syncSuccessString: String
+
+    val syncFailedString: String
+
+    fun initView()
+
     fun recreateView()
 
     fun updateLanguage(langCode: String)
 
     fun setServicesSuspended(serviceEnablesKey: String, isHolidays: Boolean)
+
+    fun setSyncInProgress(inProgress: Boolean)
+
+    fun showForceSyncDialog()
 }
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 4d2c7c458..cbdf94e39 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -375,6 +375,15 @@
     <string name="pref_services_suspended">Zawieszona na wakacjach</string>
     <string name="pref_services_interval">Interwał aktualizacji</string>
     <string name="pref_services_wifi">Tylko WiFi</string>
+    <string name="pref_services_force_sync">Synchronizuj teraz</string>
+    <string name="pref_services_message_sync_success">Zsynchronizowano!</string>
+    <string name="pref_services_message_sync_failed">Synchronizacja nie powiodła się</string>
+    <string name="pref_services_sync_in_progress">Synchronizacja w trakcie</string>
+    <string name="pref_services_dialog_force_sync_title">Synchronizacja</string>
+    <string name="pref_services_dialog_force_sync_summary">
+        Ręczna synchronizacja nie odświeża widoków w aplikacji.
+        \nAby zobaczyć zsynchronizowane informacje uruchom ponownie aplikację po zsynchronizowaniu.
+    </string>
 
     <string name="pref_other_header">Inne</string>
     <string name="pref_other_grade_modifier_plus">Wartość plusa</string>
diff --git a/app/src/main/res/values/preferences_keys.xml b/app/src/main/res/values/preferences_keys.xml
index 49601b550..559e2159c 100644
--- a/app/src/main/res/values/preferences_keys.xml
+++ b/app/src/main/res/values/preferences_keys.xml
@@ -11,6 +11,7 @@
     <string name="pref_key_services_enable">services_enable</string>
     <string name="pref_key_services_interval">services_interval</string>
     <string name="pref_key_services_wifi_only">services_disable_wifi_only</string>
+    <string name="pref_key_services_force_sync">services_force_sync</string>
     <string name="pref_key_notifications_enable">notifications_enable</string>
     <string name="pref_key_notification_debug">notification_debug</string>
     <string name="pref_key_grade_modifier_plus">grade_modifier_plus</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f3aa468af..a3384c74d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -360,6 +360,15 @@
     <string name="pref_services_suspended">Suspended on holidays</string>
     <string name="pref_services_interval">Updates interval</string>
     <string name="pref_services_wifi">Wi-Fi only</string>
+    <string name="pref_services_force_sync">Sync now</string>
+    <string name="pref_services_message_sync_success">Synced!</string>
+    <string name="pref_services_message_sync_failed">Sync failed</string>
+    <string name="pref_services_sync_in_progress">Sync in progress</string>
+    <string name="pref_services_dialog_force_sync_title">Synchronization</string>
+    <string name="pref_services_dialog_force_sync_summary">
+        Manual sync doesn\'t refresh app views.
+        \nTo see the synced data relaunch the app after syncing.
+    </string>
 
     <string name="pref_other_header">Other</string>
     <string name="pref_other_grade_modifier_plus">Value of the plus</string>
diff --git a/app/src/main/res/xml/scheme_preferences.xml b/app/src/main/res/xml/scheme_preferences.xml
index e92aca63f..bb9eb5fcd 100644
--- a/app/src/main/res/xml/scheme_preferences.xml
+++ b/app/src/main/res/xml/scheme_preferences.xml
@@ -77,6 +77,10 @@
             app:iconSpaceReserved="false"
             app:key="@string/pref_key_services_wifi_only"
             app:title="@string/pref_services_wifi" />
+        <Preference
+            app:iconSpaceReserved="false"
+            app:title="@string/pref_services_force_sync"
+            app:key="@string/pref_key_services_force_sync" />
     </PreferenceCategory>
     <PreferenceCategory
         app:iconSpaceReserved="false"