diff --git a/ac-electron/install.fish b/ac-electron/install.fish
new file mode 100755
index 000000000..77d60be09
--- /dev/null
+++ b/ac-electron/install.fish
@@ -0,0 +1,147 @@
+#!/usr/bin/env fish
+# Aesthetic Computer Electron — Install latest published macOS release
+# Pulls the signed/notarized DMG from releases.aesthetic.computer/desktop and
+# installs Aesthetic.Computer.app into /Applications. No build required.
+#
+# Usage:
+#   ./install.fish                # Download, install, launch
+#   ./install.fish --no-launch    # Install without opening
+#   ./install.fish --force        # Reinstall even if same version is present
+#   ./install.fish --version=X.Y.Z   # Pin to a specific version
+
+set -l RELEASES_URL "https://releases.aesthetic.computer/desktop"
+set -l APP_NAME "Aesthetic.Computer.app"
+
+set -l cyan (set_color cyan)
+set -l green (set_color green)
+set -l yellow (set_color yellow)
+set -l red (set_color red)
+set -l magenta (set_color magenta)
+set -l normal (set_color normal)
+
+set -l launch true
+set -l force false
+set -l pinned_version ""
+
+for arg in $argv
+    switch $arg
+        case "--no-launch"
+            set launch false
+        case "--force"
+            set force true
+        case "--version=*"
+            set pinned_version (string replace "--version=" "" $arg)
+        case "--help" "-h"
+            echo "Usage: install.fish [--no-launch] [--force] [--version=X.Y.Z]"
+            exit 0
+    end
+end
+
+if test (uname) != "Darwin"
+    echo "$red✗ macOS only (this host is "(uname)")$normal"
+    exit 1
+end
+
+echo "$magenta🎨 Aesthetic.Computer — installing latest desktop release$normal"
+echo ""
+
+# Resolve target version + DMG filename
+# (note: fish reserves $version for the shell version, so we use $app_version)
+set -l app_version
+set -l dmg_file
+if test -n "$pinned_version"
+    set app_version $pinned_version
+    set dmg_file "Aesthetic.Computer-$app_version-universal.dmg"
+else
+    echo "$cyan→ Fetching $RELEASES_URL/latest-mac.yml$normal"
+    set -l yml (curl -fsSL "$RELEASES_URL/latest-mac.yml")
+    if test -z "$yml"
+        echo "$red✗ Could not reach release feed$normal"
+        exit 1
+    end
+    set app_version (printf '%s\n' $yml | grep -E '^version:' | head -1 | string replace -r '^version:\s*' '')
+    set dmg_file (printf '%s\n' $yml | grep -E 'url:\s*.+\.dmg' | head -1 | string replace -r '^\s*-?\s*url:\s*' '' | string trim)
+    if test -z "$app_version" -o -z "$dmg_file"
+        echo "$red✗ Could not parse latest-mac.yml$normal"
+        printf '%s\n' $yml
+        exit 1
+    end
+end
+
+set -l dmg_url "$RELEASES_URL/$dmg_file"
+echo "  version: $green$app_version$normal"
+echo "  dmg:     $dmg_file"
+echo ""
+
+# Skip if same version is already installed
+set -l plist "/Applications/$APP_NAME/Contents/Info.plist"
+if test -f "$plist" -a "$force" != true
+    set -l installed (defaults read "$plist" CFBundleShortVersionString 2>/dev/null)
+    if test "$installed" = "$app_version"
+        echo "$green✓ $APP_NAME $app_version is already installed$normal"
+        if test "$launch" = true
+            echo "$cyan▶ Launching...$normal"
+            open -a "/Applications/$APP_NAME"
+        end
+        exit 0
+    else if test -n "$installed"
+        echo "$yellow… replacing installed version $installed with $app_version$normal"
+    end
+end
+
+# Download
+set -l tmp_dmg (mktemp -t ac-electron-install).dmg
+echo "$cyan→ Downloading$normal"
+if not curl -fL --progress-bar "$dmg_url" -o "$tmp_dmg"
+    echo "$red✗ Download failed$normal"
+    rm -f "$tmp_dmg"
+    exit 1
+end
+
+# Mount
+echo "$cyan→ Mounting$normal"
+set -l mount_point (hdiutil attach -nobrowse -readonly "$tmp_dmg" | grep -oE '/Volumes/[^	]+' | tail -1 | string trim)
+if test -z "$mount_point" -o ! -d "$mount_point"
+    echo "$red✗ Could not mount DMG$normal"
+    rm -f "$tmp_dmg"
+    exit 1
+end
+
+# Find the .app bundle inside the volume (defend against rename)
+set -l src_app "$mount_point/$APP_NAME"
+if not test -d "$src_app"
+    set src_app (find "$mount_point" -maxdepth 2 -name "*.app" -type d | head -1)
+end
+if test -z "$src_app" -o ! -d "$src_app"
+    echo "$red✗ No .app bundle inside DMG$normal"
+    hdiutil detach "$mount_point" -quiet
+    rm -f "$tmp_dmg"
+    exit 1
+end
+
+# Quit any running instance before replacing
+osascript -e 'tell application "Aesthetic.Computer" to quit' >/dev/null 2>&1
+pkill -f "Aesthetic.Computer" 2>/dev/null
+sleep 0.5
+
+# Install
+echo "$cyan→ Installing to /Applications$normal"
+if test -d "/Applications/$APP_NAME"
+    rm -rf "/Applications/$APP_NAME"
+end
+cp -R "$src_app" "/Applications/$APP_NAME"
+
+# Cleanup
+hdiutil detach "$mount_point" -quiet
+rm -f "$tmp_dmg"
+
+# Strip quarantine flag so Gatekeeper opens it cleanly (app is already notarized)
+xattr -dr com.apple.quarantine "/Applications/$APP_NAME" 2>/dev/null
+
+echo ""
+echo "$green✓ Installed Aesthetic.Computer $app_version → /Applications/$APP_NAME$normal"
+
+if test "$launch" = true
+    echo "$cyan▶ Launching$normal"
+    open -a "/Applications/$APP_NAME"
+end
diff --git a/ac-electron/package.json b/ac-electron/package.json
index c2c92ba62..5d06546ef 100644
--- a/ac-electron/package.json
+++ b/ac-electron/package.json
@@ -14,6 +14,7 @@
     "dev": "fish dev.fish --dev",
     "dev:prod": "fish dev.fish --prod",
     "dev:watch": "fish dev.fish --dev --watch",
+    "install:mac": "fish install.fish",
     "electron": "./node_modules/electron/dist/Electron.app/Contents/MacOS/Electron",
     "icons": "node scripts/generate-icons.mjs",
     "native:build": "cd native/osr-gpu && npm install && npm run build || echo 'Native addon build skipped'",