diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5f5291e..0958105 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,12 +27,10 @@ jobs:
           - os: macos-latest
             target: macos
             build_flags: ""
-            package_flags: "--signing adhoc"
             artifact: "zig-out/package/*.dmg"
           - os: ubuntu-latest
             target: linux
             build_flags: "-Dplatform=linux"
-            package_flags: ""
             artifact: "zig-out/package/*.tar.gz"
     steps:
       - uses: actions/checkout@v5
@@ -55,8 +53,18 @@ jobs:
         run: native doctor
       - name: Build release binary
         run: native build ${{ matrix.build_flags }}
-      - name: Package
-        run: native package --target ${{ matrix.target }} ${{ matrix.package_flags }} --archive
+      - name: Package (Linux)
+        if: runner.os == 'Linux'
+        run: native package --target linux --archive
+      - name: Package (macOS)
+        # native package signs the space-free studio.app, then the script
+        # renames it to "OCPP DebugKit Studio.app" and builds the .dmg (the SDK
+        # can't sign a bundle path with spaces). TAG comes through the
+        # environment (injection-safe).
+        if: runner.os == 'macOS'
+        env:
+          TAG: ${{ github.ref_name }}
+        run: bash scripts/package-macos.sh "${TAG#v}"
       - name: Upload package artifact
         uses: actions/upload-artifact@v4
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 386f27f..36b513a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ reference are all pre-1.0, minor (0.x) releases may include breaking changes.
 
 ## [Unreleased]
 
+### Changed
+
+- **macOS** — the packaged app bundle is now named `OCPP DebugKit Studio.app`
+  (previously `studio.app`), so its on-disk name matches its display name; the CLI
+  binary is unchanged (`studio`). The install docs now cover clearing the
+  Gatekeeper quarantine on the ad-hoc build.
+
 ## [0.5.0] — 2026-07-12
 
 Studio's first packaged, signed public release, assembled across milestones
diff --git a/README.md b/README.md
index 55656e0..a0c14bf 100644
--- a/README.md
+++ b/README.md
@@ -33,14 +33,29 @@ The two share **no code**. They meet only at a *conformance contract*: the same
 
 ## Install
 
-Download the latest release for your platform from the
+Download the latest build for your platform from the
 [**Releases**](https://github.com/ocpp-debugkit/studio/releases) page.
 
-- **macOS** — open the `.dmg` and drag *OCPP DebugKit Studio* to Applications. The
-  0.5.0 build is **ad-hoc signed** (not yet notarized), so the first launch needs
-  **right-click → Open** (or *System Settings → Privacy & Security → Open Anyway*).
-- **Linux** — extract the `.tar.gz` and run the `studio` binary. Requires GTK 4
-  (`libgtk-4`, `libwebkitgtk-6.0`).
+### macOS (Apple silicon)
+
+Open the `.dmg` and drag **OCPP DebugKit Studio** to Applications. The build is
+**ad-hoc signed** (not notarized), so macOS quarantines the download and Gatekeeper
+blocks the first launch. Clear it once with a single command:
+
+```sh
+xattr -dr com.apple.quarantine "/Applications/OCPP DebugKit Studio.app"
+```
+
+Prefer not to use the Terminal? Double-click the app, and when macOS refuses, open
+**System Settings → Privacy & Security** and click **Open Anyway**, then launch it
+again. The ad-hoc signature is what lets the app run once unquarantined;
+notarization — which would remove this step entirely — is a deliberate tradeoff
+we've deferred.
+
+### Linux
+
+Extract the `.tar.gz` and run the `studio` binary. Requires GTK 4 (`libgtk-4`,
+`libwebkitgtk-6.0`).
 
 Studio is pre-1.0 (0.x) while Zig, the Native SDK, and the toolkit conformance
 reference are all pre-1.0 — see the [roadmap](ROADMAP.md).
diff --git a/RELEASING.md b/RELEASING.md
index 5e31e90..8839203 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -14,10 +14,12 @@ which builds and publishes a GitHub release with two artifacts:
 | macOS | `studio-X.Y.Z-macos-ReleaseFast.dmg` | A `.app` bundle, **ad-hoc signed** |
 | Linux | `studio-X.Y.Z-linux-ReleaseFast.tar.gz` | The `studio` binary + resources |
 
-**macOS Gatekeeper:** the ad-hoc build is not notarized, so first launch needs
-**right-click → Open** (or *System Settings → Privacy & Security → Open Anyway*).
-Notarization — which removes that prompt — is a post-0.5 follow-up; it needs an
-Apple Developer identity and signing credentials wired into CI as secrets.
+**macOS Gatekeeper:** the ad-hoc build is not notarized, so macOS quarantines the
+download and blocks first launch. Users clear it once with
+`xattr -dr com.apple.quarantine "/Applications/OCPP DebugKit Studio.app"` (or
+*System Settings → Privacy & Security → Open Anyway*) — see the README. This is a
+deliberate tradeoff; notarization, which removes the prompt, needs an Apple
+Developer identity and is out of scope for now.
 
 ## Cutting a release
 
@@ -45,9 +47,12 @@ Build a package without cutting a release (macOS):
 
 ```sh
 native build
-native package --target macos --signing adhoc --archive
-# → zig-out/package/studio.app  and  zig-out/package/studio-<ver>-macos-ReleaseFast.dmg
-open zig-out/package/studio.app   # smoke-launch it
+scripts/package-macos.sh 0.5.1
+# → zig-out/package/OCPP DebugKit Studio.app  and  zig-out/package/studio-0.5.1-macos-ReleaseFast.dmg
+open "zig-out/package/OCPP DebugKit Studio.app"   # smoke-launch it
 ```
 
-`native doctor --strict` gates the manifest; the release workflow runs it too.
+[`scripts/package-macos.sh`](scripts/package-macos.sh) signs `studio.app`, renames
+it to the display name, and builds the `.dmg` — see the script header for why the
+rename can't go through `native package --output` directly. `native doctor
+--strict` gates the manifest; the release workflow runs it too.
diff --git a/scripts/package-macos.sh b/scripts/package-macos.sh
new file mode 100755
index 0000000..d51bf95
--- /dev/null
+++ b/scripts/package-macos.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+#
+# Package the macOS app as "OCPP DebugKit Studio.app" inside a .dmg.
+#
+# `native package` is run against the default bundle name `studio.app` and then
+# renamed, rather than packaged straight to the display name via `--output`,
+# because the SDK's codesign invocation does not quote the bundle path: a path
+# with spaces splits into multiple arguments and ad-hoc signing silently fails,
+# leaving an unsigned bundle (which will not launch on Apple silicon). Signing
+# the space-free name and renaming afterwards keeps the seal intact — the ad-hoc
+# signature covers bundle contents, not the directory name — and we build the
+# .dmg ourselves so it wraps the renamed, signed bundle.
+#
+# Usage: scripts/package-macos.sh <version>   (run after `native build`)
+set -euo pipefail
+
+version="${1:?usage: package-macos.sh <version>}"
+out="zig-out/package"
+app="$out/OCPP DebugKit Studio.app"
+dmg="$out/studio-${version}-macos-ReleaseFast.dmg"
+
+rm -rf "$out"
+native package --target macos --signing adhoc
+mv "$out/studio.app" "$app"
+
+# Fail loudly if the rename ever stops preserving the signature: an unsigned
+# arm64 bundle would ship broken.
+codesign --verify --deep --strict "$app"
+
+rm -f "$dmg"
+hdiutil create -volname "OCPP DebugKit Studio" -srcfolder "$app" \
+  -ov -format UDZO "$dmg"
+
+echo "packaged: $app"
+echo "archive:  $dmg"