diff --git a/crates/pstr-app/assets/icon-256.png b/crates/pstr-app/assets/icon-256.png
index 642e465..e3bda54 100644
Binary files a/crates/pstr-app/assets/icon-256.png and b/crates/pstr-app/assets/icon-256.png differ
diff --git a/images/logo.svg b/images/logo.svg
index c3b5759..0401675 100644
--- a/images/logo.svg
+++ b/images/logo.svg
@@ -26,9 +26,14 @@
   <rect x="12" y="12" width="104" height="100" rx="26" fill="url(#ps-face)"/>
   <rect x="12.5" y="12.5" width="103" height="99" rx="25.5" stroke="#FFFFFF" stroke-opacity="0.2"/>
 
-  <!-- glyph shadow, then the glyph itself -->
-  <g transform="translate(0 3)">
-    <rect width="128" height="128" fill="#2E1596" fill-opacity="0.3" mask="url(#ps-cut)"/>
+  <!-- glyph shadow, then the glyph itself. The mark's box centres on x=73 and
+       its centroid on x=66; it sits at 70 -> 64, between the two, because the
+       box centre reads as too far left and the centroid as too far right. The
+       Android and iOS icons centre it the same way. -->
+  <g transform="translate(-6 0)">
+    <g transform="translate(0 3)">
+      <rect width="128" height="128" fill="#2E1596" fill-opacity="0.3" mask="url(#ps-cut)"/>
+    </g>
+    <rect width="128" height="128" fill="url(#ps-glyph)" mask="url(#ps-cut)"/>
   </g>
-  <rect width="128" height="128" fill="url(#ps-glyph)" mask="url(#ps-cut)"/>
 </svg>
diff --git a/packaging/io.narl.proton-stream.svg b/packaging/io.narl.proton-stream.svg
index c3b5759..0401675 100644
--- a/packaging/io.narl.proton-stream.svg
+++ b/packaging/io.narl.proton-stream.svg
@@ -26,9 +26,14 @@
   <rect x="12" y="12" width="104" height="100" rx="26" fill="url(#ps-face)"/>
   <rect x="12.5" y="12.5" width="103" height="99" rx="25.5" stroke="#FFFFFF" stroke-opacity="0.2"/>
 
-  <!-- glyph shadow, then the glyph itself -->
-  <g transform="translate(0 3)">
-    <rect width="128" height="128" fill="#2E1596" fill-opacity="0.3" mask="url(#ps-cut)"/>
+  <!-- glyph shadow, then the glyph itself. The mark's box centres on x=73 and
+       its centroid on x=66; it sits at 70 -> 64, between the two, because the
+       box centre reads as too far left and the centroid as too far right. The
+       Android and iOS icons centre it the same way. -->
+  <g transform="translate(-6 0)">
+    <g transform="translate(0 3)">
+      <rect width="128" height="128" fill="#2E1596" fill-opacity="0.3" mask="url(#ps-cut)"/>
+    </g>
+    <rect width="128" height="128" fill="url(#ps-glyph)" mask="url(#ps-cut)"/>
   </g>
-  <rect width="128" height="128" fill="url(#ps-glyph)" mask="url(#ps-cut)"/>
 </svg>
diff --git a/packaging/windows/proton-stream.ico b/packaging/windows/proton-stream.ico
index efc61e3..3bc2e3f 100644
Binary files a/packaging/windows/proton-stream.ico and b/packaging/windows/proton-stream.ico differ