diff --git a/.DS_Store b/.DS_Store
index bd784f0..f69dba3 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/Chronos.pro b/Chronos.pro
index 545f10e..1632b66 100644
--- a/Chronos.pro
+++ b/Chronos.pro
@@ -1,17 +1,36 @@
 QT       += core gui
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+greaterThan(QT_MAJOR_VERSION, 5): QT += widgets
 
 CONFIG += c++17
 
 # remove possible other optimization flags
-QMAKE_CXXFLAGS_RELEASE -= -O
-QMAKE_CXXFLAGS_RELEASE -= -O1
-QMAKE_CXXFLAGS_RELEASE *= -O2
+win32 {
+    message("Build for Windows")
+    QMAKE_CXXFLAGS_RELEASE -= -O
+    QMAKE_CXXFLAGS_RELEASE -= -O1
+    QMAKE_CXXFLAGS_RELEASE *= -O2
+
+    RC_ICONS = icon.ico
+}
+
+macx {
+    message("Build for macOS")
+    ICON = icon.icns
+    QMAKE_INFO_PLIST = Info.plist
+    QMAKE_CXXFLAGS_RELEASE -= -O
+    QMAKE_CXXFLAGS_RELEASE -= -O1
+    QMAKE_CXXFLAGS_RELEASE -= -O2
+    QMAKE_CXXFLAGS_RELEASE *= -O3
+    equals(QMAKE_APPLE_DEVICE_ARCHS, arm64) {
+        message("CPU Architecture : aarch64")
+        QMAKE_CXXFLAGS_RELEASE += -mcpu=apple-a14
+    }
+}
 
 # add the desired -O3 if not present, MinGW only
 # QMAKE_CXXFLAGS_RELEASE *= -O3
 
-RC_ICONS = icon.ico
+
 
 # The following define makes your compiler emit warnings if you use
 # any Qt feature that has been marked deprecated (the exact warnings
diff --git a/Chronos.pro.user b/Chronos.pro.user
index efec190..2f32edf 100644
--- a/Chronos.pro.user
+++ b/Chronos.pro.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 5.0.2, 2021-10-18T18:56:11. -->
+<!-- Written by QtCreator 5.0.2, 2021-10-19T22:43:22. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
@@ -144,7 +144,9 @@
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
       <value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">QtProjectManager.QMakeBuildStep</value>
       <value type="bool" key="QtProjectManager.QMakeBuildStep.QMakeForced">false</value>
-      <valuelist type="QVariantList" key="QtProjectManager.QMakeBuildStep.SelectedAbis"/>
+      <valuelist type="QVariantList" key="QtProjectManager.QMakeBuildStep.SelectedAbis">
+       <value type="QString">arm-darwin-generic-mach_o-64bit</value>
+      </valuelist>
      </valuemap>
      <valuemap type="QVariantMap" key="ProjectExplorer.BuildStepList.Step.1">
       <value type="bool" key="ProjectExplorer.BuildStep.Enabled">true</value>
@@ -244,7 +246,7 @@
     <value type="bool" key="RunConfiguration.UseLibrarySearchPath">true</value>
     <value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
     <value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
-    <value type="QString" key="RunConfiguration.WorkingDirectory.default">/Volumes/Macintosh SSD/sources/Qt/build-Chronos-Qt_6_2_0_for_macOS-Debug/Chronos.app/Contents/MacOS</value>
+    <value type="QString" key="RunConfiguration.WorkingDirectory.default">/Volumes/Macintosh SSD/sources/Qt/build-Chronos-Qt_6_2_0_for_macOS-Release/Chronos.app/Contents/MacOS</value>
    </valuemap>
    <value type="int" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
   </valuemap>
diff --git a/Info.plist b/Info.plist
new file mode 100644
index 0000000..26ddb73
--- /dev/null
+++ b/Info.plist
@@ -0,0 +1,24 @@
+<?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>CFBundleExecutable</key>
+	<string>Chronos</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+        <string>com.aureliedelhaie.Chronos</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>LSMinimumSystemVersion</key>
+        <string>10.14</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+	<key>NSSupportsAutomaticGraphicsSwitching</key>
+	<true/>
+        <key>CFBundleIconFile</key>
+        <string>icon.icns</string>
+</dict>
+</plist>
diff --git a/icon.icns b/icon.icns
new file mode 100644
index 0000000..ac4b2ff
Binary files /dev/null and b/icon.icns differ
diff --git a/sources/aboutbox.cpp b/sources/aboutbox.cpp
index 9b68d69..fd62a7b 100644
--- a/sources/aboutbox.cpp
+++ b/sources/aboutbox.cpp
@@ -11,6 +11,8 @@ AboutBox::AboutBox(QWidget *parent) :
     xmin = ui->frame->x();
     ymax = ui->frame->x() + ui->frame->height();
     ymin = ui->frame->y();
+    ui->systemLabel->setText(QString("Built on %1 (%2-%3)").arg(QSysInfo::prettyProductName(), QSysInfo::kernelVersion(), QSysInfo::buildCpuArchitecture()));
+    ui->versionLabel->setText(QString("Version: %1").arg(VERSION));
 }
 
 AboutBox::~AboutBox()
diff --git a/sources/aboutbox.h b/sources/aboutbox.h
index d20317b..295a4b7 100644
--- a/sources/aboutbox.h
+++ b/sources/aboutbox.h
@@ -1,9 +1,12 @@
 #ifndef ABOUTBOX_H
 #define ABOUTBOX_H
 
+#define VERSION "2.0.0"
+
 #include <QDialog>
 #include <QMouseEvent>
 #include <iostream>
+#include <QSysInfo>
 
 namespace Ui {
 class AboutBox;
diff --git a/sources/mainwindow.cpp b/sources/mainwindow.cpp
index 400e623..841ac01 100644
--- a/sources/mainwindow.cpp
+++ b/sources/mainwindow.cpp
@@ -104,6 +104,10 @@ void MainWindow::open_save() {
     delete file;
 
     QJsonObject obj = QJsonDocument::fromJson(json.toUtf8()).object();
+    if (obj[KEY_SAVE_FILE_VERSION] != SAVE_FILE_VERSION) {
+        panic_dialog("Your save file version does not match the supported version."
+                     " Please update this file and restart the application");
+    }
     week_template = Week::from_json(obj[KEY_TEMPLATE].toObject());
     QJsonArray arr = obj[KEY_YEARS].toArray();
     foreach (QJsonValue val, arr) {
diff --git a/ui/aboutbox.ui b/ui/aboutbox.ui
index 7838975..6ec0c11 100644
--- a/ui/aboutbox.ui
+++ b/ui/aboutbox.ui
@@ -166,32 +166,22 @@ background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:1, y2:1, stop:0 rgb
        </widget>
       </item>
       <item>
-       <widget class="QLabel" name="label_2">
+       <widget class="QLabel" name="versionLabel">
         <property name="styleSheet">
          <string notr="true">font-size: 12px;</string>
         </property>
         <property name="text">
-         <string>Version: 2.0.0</string>
+         <string>Version: ...</string>
         </property>
        </widget>
       </item>
       <item>
-       <widget class="QLabel" name="label_3">
+       <widget class="QLabel" name="systemLabel">
         <property name="styleSheet">
          <string notr="true">font-size: 12px;</string>
         </property>
         <property name="text">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Made with Qt&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QLabel" name="label_7">
-        <property name="styleSheet">
-         <string notr="true">font-size: 12px;</string>
-        </property>
-        <property name="text">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Save Updater: Rust (&lt;a href=&quot;https://github.com/mojitaurelie/chronos-save-updater&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0068da;&quot;&gt;https://github.com/mojitaurelie/chronos-save-updater&lt;/span&gt;&lt;/a&gt;)&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;...&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
        </widget>
       </item>