diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
index 4ae7d12..42e6d6f 100644
--- a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -1,5 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@mipmap/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>
\ No newline at end of file
diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
index 4ae7d12..42e6d6f 100644
--- a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -1,5 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@mipmap/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>
\ No newline at end of file
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..2cd527f
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp
deleted file mode 100644
index 6f542b2..0000000
Binary files a/android/app/src/main/res/mipmap-hdpi/ic_launcher.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_background.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher_background.png
deleted file mode 100644
index bb1689f..0000000
Binary files a/android/app/src/main/res/mipmap-hdpi/ic_launcher_background.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
index bd48587..2076e07 100644
Binary files a/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png and b/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_monochrome.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher_monochrome.png
new file mode 100644
index 0000000..2076e07
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher_monochrome.png differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..0633348
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
deleted file mode 100644
index 6f542b2..0000000
Binary files a/android/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..ba8cd74
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp
deleted file mode 100644
index 1821917..0000000
Binary files a/android/app/src/main/res/mipmap-mdpi/ic_launcher.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_background.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher_background.png
deleted file mode 100644
index a18bea9..0000000
Binary files a/android/app/src/main/res/mipmap-mdpi/ic_launcher_background.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
index 162c951..842c239 100644
Binary files a/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png and b/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_monochrome.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher_monochrome.png
new file mode 100644
index 0000000..842c239
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher_monochrome.png differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..3f54edf
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
deleted file mode 100644
index 1821917..0000000
Binary files a/android/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..05c7361
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
deleted file mode 100644
index e9c3178..0000000
Binary files a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_background.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_background.png
deleted file mode 100644
index ea48e04..0000000
Binary files a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
index 7ef2d14..2957504 100644
Binary files a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_monochrome.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_monochrome.png
new file mode 100644
index 0000000..2957504
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_monochrome.png differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..b4e7cc0
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
deleted file mode 100644
index e9c3178..0000000
Binary files a/android/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..2491719
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
deleted file mode 100644
index 5aa44e8..0000000
Binary files a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_background.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_background.png
deleted file mode 100644
index 6cbb343..0000000
Binary files a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
index ecb727f..f666015 100644
Binary files a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_monochrome.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_monochrome.png
new file mode 100644
index 0000000..f666015
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_monochrome.png differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..6ade889
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
deleted file mode 100644
index 5aa44e8..0000000
Binary files a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..9610c6d
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
deleted file mode 100644
index 2092724..0000000
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_background.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_background.png
deleted file mode 100644
index 4c5cf2c..0000000
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_background.png and /dev/null differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
index 1aba5ba..0b87f8c 100644
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_monochrome.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_monochrome.png
new file mode 100644
index 0000000..0b87f8c
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_monochrome.png differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..26f4151
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
deleted file mode 100644
index 2092724..0000000
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp and /dev/null differ
diff --git a/android/app/src/main/res/values/colors.xml b/android/app/src/main/res/values/colors.xml
index 57f5e1e..09dc665 100644
--- a/android/app/src/main/res/values/colors.xml
+++ b/android/app/src/main/res/values/colors.xml
@@ -4,6 +4,9 @@
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
     
+    <!-- Adaptive Icon Background -->
+    <color name="ic_launcher_background">#f9e9c8</color>
+    
     <!-- Material 3 Light Theme Colors -->
     <color name="md_theme_light_primary">#6750A4</color>
     <color name="md_theme_light_onPrimary">#FFFFFF</color>
diff --git a/fastlane/metadata/android/de-DE/full_description.txt b/fastlane/metadata/android/de-DE/full_description.txt
index e0a8389..0239a9a 100644
--- a/fastlane/metadata/android/de-DE/full_description.txt
+++ b/fastlane/metadata/android/de-DE/full_description.txt
@@ -4,12 +4,14 @@ HAUPTFUNKTIONEN:
 
 • Einfache Notizen erstellen und bearbeiten
 • WebDAV-Synchronisation mit eigenem Server
+• Multi-Device Sync (Handy, Tablet, Desktop)
+• Markdown-Export für Obsidian/Desktop-Editoren
 • Automatische Synchronisation im Heim-WLAN
 • Konfigurierbares Sync-Interval (15/30/60 Minuten)
 • Transparente Batterie-Verbrauchsanzeige
 • Material Design 3 mit Dynamic Colors (Android 12+)
-• Swipe-to-Delete mit Bestätigungsdialog
-• Server-Backup & Wiederherstellung
+• Swipe-to-Delete mit Server-Sync
+• Server-Backup & Wiederherstellung (Merge/Replace/Overwrite)
 • Komplett offline nutzbar
 • Keine Werbung, keine Tracker
 
@@ -17,14 +19,23 @@ DATENSCHUTZ:
 
 Deine Daten bleiben bei dir! Die App kommuniziert nur mit deinem eigenen WebDAV-Server. Keine Cloud-Dienste, keine Tracking-Bibliotheken, keine Analysetools.
 
+MULTI-DEVICE SYNC:
+
+• Notizen synchronisieren automatisch zwischen allen Geräten
+• Lösch-Tracking verhindert "Zombie-Notizen"
+• Intelligente Konfliktlösung durch Timestamps
+• Markdown-Dateien für Desktop-Bearbeitung (Obsidian, VS Code, etc.)
+• Änderungen von Desktop-Editoren werden automatisch importiert
+
 SYNCHRONISATION:
 
 • Unterstützt alle WebDAV-Server (Nextcloud, ownCloud, etc.)
 • Konfigurierbares Interval: 15, 30 oder 60 Minuten
+• Optimierte Performance: überspringt unveränderte Dateien (~2-3s Sync-Zeit)
+• E-Tag Caching für 20x schnellere "keine Änderungen" Checks
 • Gemessener Akkuverbrauch: nur ~0.4% pro Tag (bei 30min)
 • Doze Mode optimiert für zuverlässige Background-Syncs
 • Manuelle Synchronisation jederzeit möglich
-• Konfliktfreie Zusammenführung durch Timestamps
 
 MATERIAL DESIGN 3:
 
@@ -32,6 +43,7 @@ MATERIAL DESIGN 3:
 • Dynamic Colors (Material You) auf Android 12+
 • Dark Mode Support
 • Intuitive Gesten (Swipe-to-Delete)
+• Live Sync-Status Anzeige
 
 Open Source unter MIT-Lizenz
 Quellcode: https://github.com/inventory69/simple-notes-sync
\ No newline at end of file
diff --git a/fastlane/metadata/android/de-DE/images/icon.png b/fastlane/metadata/android/de-DE/images/icon.png
index 50511e7..711b5b5 100644
Binary files a/fastlane/metadata/android/de-DE/images/icon.png and b/fastlane/metadata/android/de-DE/images/icon.png differ
diff --git a/fastlane/metadata/android/en-US/full_description.txt b/fastlane/metadata/android/en-US/full_description.txt
index def61f0..a5197a5 100644
--- a/fastlane/metadata/android/en-US/full_description.txt
+++ b/fastlane/metadata/android/en-US/full_description.txt
@@ -4,12 +4,14 @@ KEY FEATURES:
 
 • Create and edit simple notes
 • WebDAV synchronization with your own server
+• Multi-device sync (phone, tablet, desktop)
+• Markdown export for Obsidian/desktop editors
 • Automatic synchronization on home WiFi
 • Configurable sync interval (15/30/60 minutes)
 • Transparent battery usage display
 • Material Design 3 with Dynamic Colors (Android 12+)
-• Swipe-to-delete with confirmation dialog
-• Server backup & restore
+• Swipe-to-delete with server sync
+• Server backup & restore (Merge/Replace/Overwrite)
 • Fully usable offline
 • No ads, no trackers
 
@@ -17,14 +19,23 @@ PRIVACY:
 
 Your data stays with you! The app only communicates with your own WebDAV server. No cloud services, no tracking libraries, no analytics tools.
 
+MULTI-DEVICE SYNC:
+
+• Notes sync automatically between all your devices
+• Deletion tracking prevents "zombie notes"
+• Smart conflict resolution through timestamps
+• Markdown files for desktop editing (Obsidian, VS Code, etc.)
+• Changes from desktop editors are auto-imported
+
 SYNCHRONIZATION:
 
 • Supports all WebDAV servers (Nextcloud, ownCloud, etc.)
 • Configurable interval: 15, 30, or 60 minutes
+• Optimized performance: skips unchanged files (~2-3s sync time)
+• E-Tag caching for 20x faster "no changes" checks
 • Measured battery consumption: only ~0.4% per day (at 30min)
 • Doze Mode optimized for reliable background syncs
 • Manual synchronization available anytime
-• Conflict-free merging through timestamps
 
 MATERIAL DESIGN 3:
 
@@ -32,6 +43,7 @@ MATERIAL DESIGN 3:
 • Dynamic Colors (Material You) on Android 12+
 • Dark Mode support
 • Intuitive gestures (Swipe-to-delete)
+• Live sync status indicator
 
 Open Source under MIT License
 Source code: https://github.com/inventory69/simple-notes-sync
diff --git a/fastlane/metadata/android/en-US/images/icon.png b/fastlane/metadata/android/en-US/images/icon.png
index 50511e7..711b5b5 100644
Binary files a/fastlane/metadata/android/en-US/images/icon.png and b/fastlane/metadata/android/en-US/images/icon.png differ
diff --git a/metadata/dev.dettmer.simplenotes.yml b/metadata/dev.dettmer.simplenotes.yml
index e120356..99f02a7 100644
--- a/metadata/dev.dettmer.simplenotes.yml
+++ b/metadata/dev.dettmer.simplenotes.yml
@@ -63,7 +63,63 @@ Builds:
     scandelete:
       - android/gradle/wrapper
 
+  - versionName: 1.2.1
+    versionCode: 6
+    commit: v1.2.1
+    subdir: android/app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    gradle:
+      - fdroid
+    prebuild: sed -i -e '/signingConfig/d' build.gradle.kts
+    scandelete:
+      - android/gradle/wrapper
+
+  - versionName: 1.2.2
+    versionCode: 7
+    commit: v1.2.2
+    subdir: android/app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    gradle:
+      - fdroid
+    prebuild: sed -i -e '/signingConfig/d' build.gradle.kts
+    scandelete:
+      - android/gradle/wrapper
+
+  - versionName: 1.3.0
+    versionCode: 8
+    commit: v1.3.0
+    subdir: android/app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    gradle:
+      - fdroid
+    prebuild: sed -i -e '/signingConfig/d' build.gradle.kts
+    scandelete:
+      - android/gradle/wrapper
+
+  - versionName: 1.3.1
+    versionCode: 9
+    commit: v1.3.1
+    subdir: android/app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    gradle:
+      - fdroid
+    prebuild: sed -i -e '/signingConfig/d' build.gradle.kts
+    scandelete:
+      - android/gradle/wrapper
+
 AutoUpdateMode: Version
 UpdateCheckMode: Tags
-CurrentVersion: 1.2.0
-CurrentVersionCode: 5
+CurrentVersion: 1.3.1
+CurrentVersionCode: 9