diff --git a/simpliplay/updateChecker.js b/simpliplay/updateChecker.js
new file mode 100644
index 0000000..d931876
--- /dev/null
+++ b/simpliplay/updateChecker.js
@@ -0,0 +1,83 @@
+const https = require('https');
+const { URL } = require('url');
+const { dialog, shell } = require('electron');
+
+const latestReleaseUrl = 'https://github.com/A-Star100/simpliplay-desktop/releases/latest/';
+
+function fetchRedirectLocation(url) {
+  return new Promise((resolve, reject) => {
+    https.get(url, (res) => {
+      if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
+        resolve(res.headers.location);
+      } else {
+        reject(new Error(`Expected redirect but got status code: ${res.statusCode}`));
+      }
+    }).on('error', reject);
+  });
+}
+
+function normalizeVersion(version) {
+  return version.trim().replace(/[^\d\.]/g, '');
+}
+
+function compareVersions(v1, v2) {
+  const a = v1.split('.').map(Number);
+  const b = v2.split('.').map(Number);
+  const len = Math.max(a.length, b.length);
+
+  for (let i = 0; i < len; i++) {
+    const num1 = a[i] || 0;
+    const num2 = b[i] || 0;
+    if (num1 > num2) return 1;
+    if (num1 < num2) return -1;
+  }
+  return 0;
+}
+
+/**
+ * Checks for update and shows native dialog if update is available.
+ * @param {string} currentVersion 
+ */
+async function checkForUpdate(currentVersion) {
+  try {
+    const redirectUrl = await fetchRedirectLocation(latestReleaseUrl);
+
+    const urlObj = new URL(redirectUrl);
+    const parts = urlObj.pathname.split('/');
+
+    const releaseTag = parts[parts.length - 1];
+    const versionMatch = releaseTag.match(/release-([\d\.]+)/);
+    if (!versionMatch) {
+      throw new Error(`Could not parse version from release tag: ${releaseTag}`);
+    }
+    const latestVersion = normalizeVersion(versionMatch[1]);
+
+    const cmp = compareVersions(latestVersion, currentVersion);
+
+    if (cmp > 0) {
+      const result = dialog.showMessageBoxSync({
+        type: 'info',
+        buttons: ['Download', 'Later'],
+        defaultId: 0,
+        cancelId: 1,
+        title: 'Update Available',
+        message: `A new version (${latestVersion}) is available. Would you like to download it?`,
+      });
+
+      if (result === 0) {
+        shell.openExternal(latestReleaseUrl);
+      }
+    } else {
+      dialog.showMessageBoxSync({
+        type: 'info',
+        buttons: ['OK'],
+        title: "You're up to date!",
+        message: `You are using the latest version (${currentVersion}).`,
+      });
+    }
+  } catch (err) {
+    dialog.showErrorBox('Could not check for update.', err.message);
+  }
+}
+
+module.exports = { checkForUpdate };