diff --git a/android/app/src/main/res/drawable/ic_launcher_background.xml b/android/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..fbddb37
--- /dev/null
+++ b/android/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- fondo del icono adaptativo: el marron casi negro del logo de Oasis -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+  <solid android:color="#1A1300"/>
+</shape>
diff --git a/android/app/src/main/res/drawable/ic_launcher_foreground.xml b/android/app/src/main/res/drawable/ic_launcher_foreground.xml
deleted file mode 100644
index 0de041c..0000000
--- a/android/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Hexagono, el mismo motivo que la rejilla de navegacion de la interfaz -->
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp" android:height="108dp"
-    android:viewportWidth="108" android:viewportHeight="108">
-  <path
-      android:pathData="M54,28 L74,40 L74,64 L54,76 L34,64 L34,40 Z"
-      android:strokeColor="#FFB400" android:strokeWidth="5" android:fillColor="#00000000"/>
-  <path
-      android:pathData="M54,44 L63,49 L63,59 L54,64 L45,59 L45,49 Z"
-      android:fillColor="#FFB400"/>
-</vector>
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 5f349f7..5783887 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 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- el logo de Oasis (la isla), el mismo que la app oficial; el fondo llena la forma
+     que ponga el lanzador (circulo, gota...) en vez de dejar un cuadrado dentro -->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-  <background android:drawable="@color/ic_launcher_background"/>
-  <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+  <background android:drawable="@drawable/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>
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 5f349f7..5783887 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 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- el logo de Oasis (la isla), el mismo que la app oficial; el fondo llena la forma
+     que ponga el lanzador (circulo, gota...) en vez de dejar un cuadrado dentro -->
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-  <background android:drawable="@color/ic_launcher_background"/>
-  <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+  <background android:drawable="@drawable/ic_launcher_background"/>
+  <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
 </adaptive-icon>
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..8310d8e
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_foreground.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..fe05a75
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/ic_launcher_foreground.png 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..036818b
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_foreground.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..6b640a6
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/ic_launcher_foreground.png 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..e750ea2
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_foreground.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..9e12da6
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/ic_launcher_foreground.png 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..6777e18
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_foreground.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..587c02d
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher_foreground.png 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..88b1745
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_foreground.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png
new file mode 100644
index 0000000..ca2758c
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher_foreground.png differ
diff --git a/android/app/src/main/res/values/ic_launcher_background.xml b/android/app/src/main/res/values/ic_launcher_background.xml
deleted file mode 100644
index c78bd37..0000000
--- a/android/app/src/main/res/values/ic_launcher_background.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-  <color name="ic_launcher_background">#121212</color>
-</resources>
diff --git a/android/scripts/sobre_oficial.sh b/android/scripts/sobre_oficial.sh
index 32d91e3..fda7a99 100755
--- a/android/scripts/sobre_oficial.sh
+++ b/android/scripts/sobre_oficial.sh
@@ -95,6 +95,18 @@ sed -i \
   "$DEC/AndroidManifest.xml"
 grep -rl "\"$PKG_DEV\.[A-Z_]*\"" "$DEC"/smali* | xargs -r sed -i -E "s|\"$PKG_DEV\.([A-Z_]+)\"|\"$PKG.\1\"|g"
 
+# icono: el logo de la oficial, pero adaptativo. La oficial solo trae el PNG cuadrado
+# y en Android 8+ el lanzador lo encoge dentro de un circulo blanco; con la capa de
+# fondo y la de delante (app/src/main/res) la isla llena la forma del lanzador
+say "icono adaptativo"
+RES="$HERE/app/src/main/res"
+mkdir -p "$DEC/res/mipmap-anydpi-v26" "$DEC/res/drawable"
+cp "$RES/mipmap-anydpi-v26/ic_launcher.xml" "$DEC/res/mipmap-anydpi-v26/"
+cp "$RES/drawable/ic_launcher_background.xml" "$DEC/res/drawable/"
+for d in mdpi hdpi xhdpi xxhdpi xxxhdpi; do
+  cp "$RES/mipmap-$d/ic_launcher_foreground.png" "$DEC/res/mipmap-$d/"
+done
+
 # las de prueba (firmadas con la clave de depuracion) se marcan depurables: asi se
 # puede inspeccionar la WebView desde chrome://inspect. Las de publicar, nunca
 if [ -z "${OASIS_KEYSTORE:-}" ]; then
@@ -104,8 +116,13 @@ fi
 # version: la del dev por mil mas los commits de la rama, para que suba siempre
 CODE_DEV="$(sed -n 's/^  versionCode: //p' "$DEC/apktool.yml")"
 CODE="$(( CODE_DEV * 1000 + $(git -C "$REPO" rev-list --count HEAD) % 1000 ))"
-sed -i -e "s/^  versionCode: .*/  versionCode: $CODE/" -e "s/^  versionName: .*/  versionName: $VERSION-hacklab/" "$DEC/apktool.yml"
-say "version $VERSION-hacklab (codigo $CODE)"
+# la app oficial solo vuelve a extraer nodejs-project.zip si cambia versionName.versionCode;
+# con el mismo commit (o cambios sin commitear) se quedaba con el backend anterior. La
+# huella del codigo en el nombre hace que cada APK distinta se extraiga de nuevo
+HUELLA="$(cd "$REPO" && find src main.js package.json -type f -not -path '*/node_modules/*' -print0 | sort -z | xargs -0 sha1sum | sha1sum | cut -c1-8)"
+NAME="$VERSION-hacklab.$HUELLA"
+sed -i -e "s/^  versionCode: .*/  versionCode: $CODE/" -e "s/^  versionName: .*/  versionName: $NAME/" "$DEC/apktool.yml"
+say "version $NAME (codigo $CODE)"
 
 # --- montar, alinear y firmar --------------------------------------------------
 say "montando"