diff --git a/app/build.gradle b/app/build.gradle
index 7078e6e..c4d7dac 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 203
-        versionName "1.12.13 'Caerbannog'"
+        versionCode 300
+        versionName "1.13.0 'ReStart'"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {
diff --git a/app/src/main/cpp/monerujo.cpp b/app/src/main/cpp/monerujo.cpp
index c511be6..dc6ac8f 100644
--- a/app/src/main/cpp/monerujo.cpp
+++ b/app/src/main/cpp/monerujo.cpp
@@ -785,7 +785,7 @@ Java_com_m2049r_xmrwallet_model_Wallet_getDaemonBlockChainTargetHeight(JNIEnv *e
 }
 
 JNIEXPORT jboolean JNICALL
-Java_com_m2049r_xmrwallet_model_Wallet_isSynchronized(JNIEnv *env, jobject instance) {
+Java_com_m2049r_xmrwallet_model_Wallet_isSynchronizedJ(JNIEnv *env, jobject instance) {
     Bitmonero::Wallet *wallet = getHandle<Bitmonero::Wallet>(env, instance);
     return static_cast<jboolean>(wallet->synchronized());
 }
@@ -909,6 +909,16 @@ Java_com_m2049r_xmrwallet_model_Wallet_refreshAsync(JNIEnv *env, jobject instanc
     wallet->refreshAsync();
 }
 
+//TODO virtual bool rescanBlockchain() = 0;
+
+//virtual void rescanBlockchainAsync() = 0;
+JNIEXPORT void JNICALL
+Java_com_m2049r_xmrwallet_model_Wallet_rescanBlockchainAsync(JNIEnv *env, jobject instance) {
+    Bitmonero::Wallet *wallet = getHandle<Bitmonero::Wallet>(env, instance);
+    wallet->rescanBlockchainAsync();
+}
+
+
 //TODO virtual void setAutoRefreshInterval(int millis) = 0;
 //TODO virtual int autoRefreshInterval() const = 0;
 
diff --git a/app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java b/app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java
index b8e3429..0d8572c 100644
--- a/app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java
+++ b/app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java
@@ -217,6 +217,20 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
         releaseWakeLock();
     }
 
+    private void onWalletRescan() {
+        try {
+            final WalletFragment walletFragment = (WalletFragment)
+                    getSupportFragmentManager().findFragmentByTag(WalletFragment.class.getName());
+            getWallet().rescanBlockchainAsync();
+            synced = false;
+            walletFragment.unsync();
+            invalidateOptionsMenu();
+        } catch (ClassCastException ex) {
+            Timber.d(ex.getLocalizedMessage());
+            // keep calm and carry on
+        }
+    }
+
     @Override
     protected void onStop() {
         Timber.d("onStop()");
@@ -243,7 +257,7 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     public boolean onPrepareOptionsMenu(Menu menu) {
         MenuItem renameItem = menu.findItem(R.id.action_rename);
         if (renameItem != null)
-            renameItem.setVisible(hasWallet() && getWallet().isSynchronized());
+            renameItem.setEnabled(hasWallet() && getWallet().isSynchronized());
         MenuItem streetmodeItem = menu.findItem(R.id.action_streetmode);
         if (streetmodeItem != null)
             if (isStreetMode()) {
@@ -251,12 +265,18 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
             } else {
                 streetmodeItem.setIcon(R.drawable.gunther_24dp);
             }
+        final MenuItem rescanItem = menu.findItem(R.id.action_rescan);
+        if (rescanItem != null)
+            rescanItem.setEnabled(isSynced());
         return super.onPrepareOptionsMenu(menu);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+            case R.id.action_rescan:
+                onWalletRescan();
+                return true;
             case R.id.action_info:
                 onWalletDetails();
                 return true;
diff --git a/app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java b/app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java
index 7e214d9..ea8e4ae 100644
--- a/app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java
+++ b/app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java
@@ -356,6 +356,14 @@ public class WalletFragment extends Fragment
         if (isVisible()) enableAccountsList(true); //otherwise it is enabled in onResume()
     }
 
+    public void unsync() {
+        if (!activityCallback.isWatchOnly()) {
+            bSend.setVisibility(View.INVISIBLE);
+            bSend.setEnabled(false);
+        }
+        if (isVisible()) enableAccountsList(false); //otherwise it is enabled in onResume()
+    }
+
     boolean walletLoaded = false;
 
     public void onLoaded() {
diff --git a/app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java b/app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java
index ec9f80e..660744d 100644
--- a/app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java
+++ b/app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java
@@ -248,7 +248,13 @@ public class Wallet {
 
     public native long getDaemonBlockChainTargetHeight();
 
-    public native boolean isSynchronized();
+    public native boolean isSynchronizedJ();
+
+    public boolean isSynchronized() {
+        final long daemonHeight = getDaemonBlockChainHeight();
+        if (daemonHeight == 0) return false;
+        return isSynchronizedJ() && (getBlockChainHeight() == daemonHeight);
+    }
 
     public static native String getDisplayAmount(long amount);
 
@@ -278,6 +284,8 @@ public class Wallet {
 
     public native void refreshAsync();
 
+    public native void rescanBlockchainAsync();
+
 //TODO virtual void setAutoRefreshInterval(int millis) = 0;
 //TODO virtual int autoRefreshInterval() const = 0;
 
diff --git a/app/src/main/res/menu/wallet_menu.xml b/app/src/main/res/menu/wallet_menu.xml
index 691c770..97c4757 100644
--- a/app/src/main/res/menu/wallet_menu.xml
+++ b/app/src/main/res/menu/wallet_menu.xml
@@ -34,4 +34,9 @@
         android:title="@string/menu_info"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/action_rescan"
+        android:orderInCategory="600"
+        android:title="@string/menu_rescan"
+        app:showAsAction="never" />
 </menu>
\ No newline at end of file
diff --git a/app/src/main/res/values-cat/strings.xml b/app/src/main/res/values-cat/strings.xml
index 41818a3..67665ca 100644
--- a/app/src/main/res/values-cat/strings.xml
+++ b/app/src/main/res/values-cat/strings.xml
@@ -383,4 +383,6 @@
     <string name="label_restoreheight">Restablir Alçada</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 45ebe8c..161677a 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -386,4 +386,6 @@
     <string name="label_restoreheight">Wiederherstellungshöhe</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-el/strings.xml b/app/src/main/res/values-el/strings.xml
index bcd1db1..5598201 100644
--- a/app/src/main/res/values-el/strings.xml
+++ b/app/src/main/res/values-el/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Ύψος ανάκτησης</string> <!-- "Restore Height" -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-eo/strings.xml b/app/src/main/res/values-eo/strings.xml
index a1f3288..27c2221 100644
--- a/app/src/main/res/values-eo/strings.xml
+++ b/app/src/main/res/values-eo/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Restaŭralteco</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index d593f15..9e361f5 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -375,4 +375,6 @@
     <string name="label_restoreheight">Altura de Restauración</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-et/strings.xml b/app/src/main/res/values-et/strings.xml
index 59cc42b..583bc5b 100644
--- a/app/src/main/res/values-et/strings.xml
+++ b/app/src/main/res/values-et/strings.xml
@@ -383,4 +383,6 @@
     <string name="label_restoreheight">Taastamise plokinumber</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 2a33c31..5008abb 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -389,4 +389,6 @@
     <string name="label_restoreheight">Hauteur de restauration</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index fb7b66d..6293da1 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -387,4 +387,6 @@
     <string name="label_restoreheight">Visszaállítási lánchossz</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 0f4e421..1fde8ac 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -388,4 +388,6 @@
     <string name="label_restoreheight">Altezza di ripristino</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index b5c786f..c1b7c55 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -394,4 +394,6 @@
     <string name="label_restoreheight">Restore Height</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-nb/strings.xml b/app/src/main/res/values-nb/strings.xml
index 2c1a872..4415955 100644
--- a/app/src/main/res/values-nb/strings.xml
+++ b/app/src/main/res/values-nb/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Restore Height</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 1896026..b8b916c 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Herstelpunt</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 08767a7..8b2f2bf 100755
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -377,4 +377,6 @@
     <string name="label_restoreheight">Restaurar da altura</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 1b3ee7c..ae58d05 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -389,4 +389,6 @@
     <string name="label_restoreheight">Restaurar de Altura</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-ro/strings.xml b/app/src/main/res/values-ro/strings.xml
index 8ddd026..b807a88 100644
--- a/app/src/main/res/values-ro/strings.xml
+++ b/app/src/main/res/values-ro/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Restaurează Monobloc</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 6aace5f..e2d0a68 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -389,4 +389,6 @@
     <string name="label_restoreheight">Восстановить высоту</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index 0ed9d81..d58a705 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -386,4 +386,6 @@
     <string name="label_restoreheight">Výška</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-sr/strings.xml b/app/src/main/res/values-sr/strings.xml
index 84405a5..8e16614 100644
--- a/app/src/main/res/values-sr/strings.xml
+++ b/app/src/main/res/values-sr/strings.xml
@@ -385,4 +385,6 @@
     <string name="label_restoreheight">Obnovi visinu</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index cdaa367..829bf46 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -370,4 +370,6 @@
     <string name="label_restoreheight">Återställningshöjd</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-ua/strings.xml b/app/src/main/res/values-ua/strings.xml
index 5995984..246b453 100644
--- a/app/src/main/res/values-ua/strings.xml
+++ b/app/src/main/res/values-ua/strings.xml
@@ -389,4 +389,6 @@
     <string name="label_restoreheight">Відновити висоту</string> <!-- Restore Height -->
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index c5b5cbf..05a27e9 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -307,4 +307,6 @@
     <string name="label_restoreheight">Restore Height</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 255fb8e..918e9da 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -384,4 +384,6 @@
     <string name="label_restoreheight">Restore Height</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bb1ec18..a7f8ddb 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -436,4 +436,6 @@
     <string name="label_restoreheight">Restore Height</string>
 
     <string name="toast_ledger_start_app">Start Monero App on %1$s</string>
+
+    <string name="menu_rescan">Rescan!</string>
 </resources>