diff --git a/.gitignore b/.gitignore
index 9e6cdda..abc8249 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@ coverage.xml
 # Translation files are taken care on https://poeditor.com/join/project/GXuhLpdaoh
 *.mo
 *.po
+/.eggs
diff --git a/Makefile b/Makefile
index 0f7361d..1c4aa13 100644
--- a/Makefile
+++ b/Makefile
@@ -57,36 +57,8 @@ finish-release: env
 	@echo -e "Invoke \e[33mgit push origin master features v$$RELEASE_NUMBER\e[39m to finish."
 
 distmacapp = dist/Kosmorro.app
-dist-mac-app: env
-	@if [ -e $(distmacapp) ]; then echo "Deleting the existing app."; rm -rf $(distmacapp); fi
-	mkdir -p "$(distmacapp)/Contents/MacOS" "$(distmacapp)/Contents/Resources"
-
-	# Add application files
-	cp "kosmorro" "$(distmacapp)/Contents/MacOS/kosmorro"
-	cp -r "kosmorrolib" "$(distmacapp)/Contents/MacOS/kosmorrolib"
-	cp "Pipfile" "$(distmacapp)/Contents/MacOS/Pipfile"
-	cp "Pipfile.lock" "$(distmacapp)/Contents/MacOS/Pipfile.lock"
-
-	# Install dependencies
-	cd $(distmacapp)/Contents/MacOS && PIPENV_VENV_IN_PROJECT=1 pipenv sync
-	cd $(distmacapp)/Contents/MacOS && source .venv/bin/activate && pip install wxPython latex
-
-	# Add Python binaries and remove the links in the virtualenv
-	cp -r "$$(dirname $$(realpath $$(which python3)))/.." $(distmacapp)/Contents/MacOS/python
-	rm $(distmacapp)/Contents/MacOS/.venv/bin/python{,3,3.9}
-
-	# Add Mac-specific files
-	cp "build/distrib/darwin/Info.plist" "$(distmacapp)/Contents/Info.plist"
-	cp "build/distrib/darwin/launch-kosmorro.sh" "$(distmacapp)/Contents/MacOS/launch-kosmorro"
-	cp "build/distrib/darwin/icon.icns" "$(distmacapp)/Contents/Resources/icon.icns"
-
-	sed "s/{{app_version}}/$$RELEASE_NUMBER/" "build/distrib/darwin/Info.plist" > "$(distmacapp)/Contents/Info.plist"
-	chmod +x "$(distmacapp)/Contents/MacOS/launch-kosmorro"
-
-	# Clean package
-	rm "$(distmacapp)/Contents/MacOS/Pipfile" "$(distmacapp)/Contents/MacOS/Pipfile.lock"
-
-	@echo "Application created."
+dist-mac-app:
+	python3 setup-gui-app.py py2app
 
 distmacdmg = dist/Kosmorro.dmg
 dist-mac-dmg: dist-mac-app
diff --git a/build/distrib/darwin/Info.plist b/build/distrib/darwin/Info.plist
deleted file mode 100644
index 9781cd2..0000000
--- a/build/distrib/darwin/Info.plist
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDisplayName</key>
-	<string>Kosmorro</string>
-	<key>CFBundleExecutable</key>
-	<string>MacOS/launch-kosmorro</string>
-	<key>CFBundleIconFile</key>
-	<string>icon.icns</string>
-	<key>CFBundleIdentifier</key>
-	<string>space.kosmorro.app</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>Kosmorro</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>{{app_version}}</string>
-</dict>
-</plist>
diff --git a/build/distrib/darwin/launch-kosmorro.sh b/build/distrib/darwin/launch-kosmorro.sh
deleted file mode 100644
index ab867e2..0000000
--- a/build/distrib/darwin/launch-kosmorro.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/sh
-
-# Move to the MacOS folder
-cd $(dirname "$0")
-
-source .venv/bin/activate
-./python/bin/python3 kosmorro --gui
diff --git a/kosmorro-gui b/kosmorro-gui
new file mode 100644
index 0000000..afff20d
--- /dev/null
+++ b/kosmorro-gui
@@ -0,0 +1,11 @@
+#!/usr/bin/python3
+
+from kosmorrolib.gui import mainwindow
+
+
+def main():
+    mainwindow.start()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/setup-gui-app.py b/setup-gui-app.py
new file mode 100644
index 0000000..ffa51b5
--- /dev/null
+++ b/setup-gui-app.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+from setuptools import setup
+from datetime import date
+
+from kosmorrolib.version import VERSION
+
+
+APP_DARWIN_IDENTIFIER = 'space.kosmorro.darwin'
+EXECUTABLE_NAME = 'kosmorro'
+APP_NAME = 'Kosmorro'
+APP_COPYRIGHT = 'Jérôme Deuchnord © 2019-%d - GNU Affero General Public License' % date.today().year
+
+APP = ['kosmorro-gui']
+DATA_FILES = []
+OPTIONS = {
+    'plist': {
+        'CFBundleName': APP_NAME,
+        'CFBundleDisplayName': APP_NAME,
+        'CFBundleExecutable': EXECUTABLE_NAME,
+        'CFBundleIdentifier': APP_DARWIN_IDENTIFIER,
+        'CFBundleShortVersionString': VERSION,
+        'NSHumanReadableCopyright': APP_COPYRIGHT
+    },
+    'iconfile': 'build/distrib/darwin/icon.icns',
+    'packages': ','.join(['wx'])
+}
+
+setup(
+    app=APP,
+    data_files=DATA_FILES,
+    options={'py2app': OPTIONS},
+    setup_requires=['py2app'],
+)