diff --git a/package.json b/package.json
index 987e31f73d..30fa6e8e0d 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
   "files": [
     "bin/",
     "app/",
+    "scripts/postinstall.mjs",
     "README.md",
     "LICENSE"
   ],
@@ -57,6 +58,7 @@
     "test:all": "npm run test:unit && npm run test:e2e",
     "check": "npm run lint && npm run test",
     "prepublishOnly": "npm run build:cli",
+    "postinstall": "node scripts/postinstall.mjs",
     "prepare": "husky"
   },
   "dependencies": {
diff --git a/scripts/postinstall.mjs b/scripts/postinstall.mjs
new file mode 100644
index 0000000000..9c39670f05
--- /dev/null
+++ b/scripts/postinstall.mjs
@@ -0,0 +1,57 @@
+#!/usr/bin/env node
+
+/**
+ * OmniRoute — Postinstall Native Module Rebuild
+ *
+ * The npm package ships with a Next.js standalone build that includes
+ * better-sqlite3 compiled for the build platform (Linux x64).
+ * This script detects platform mismatches and rebuilds the native
+ * module for the user's actual OS/architecture.
+ *
+ * Fixes: https://github.com/diegosouzapw/OmniRoute/issues/129
+ */
+
+import { execSync } from "node:child_process";
+import { existsSync } from "node:fs";
+import { join, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+const ROOT = join(__dirname, "..");
+
+// The standalone build bundles better-sqlite3 inside app/node_modules
+const appNodeModules = join(ROOT, "app", "node_modules", "better-sqlite3");
+
+if (!existsSync(appNodeModules)) {
+  // No bundled better-sqlite3 — nothing to do (dev install, not npm global)
+  process.exit(0);
+}
+
+const buildInfoPath = join(appNodeModules, "build", "Release", "better_sqlite3.node");
+
+// Quick check: try to load the native module
+try {
+  // Use a dynamic import-like approach — try to dlopen the .node file
+  process.dlopen({ exports: {} }, buildInfoPath);
+  // If it loaded, the binary is compatible — nothing to do
+  process.exit(0);
+} catch {
+  // Binary is incompatible — rebuild
+}
+
+console.log(`\n  🔧 Rebuilding better-sqlite3 for ${process.platform}-${process.arch}...`);
+
+try {
+  execSync("npm rebuild better-sqlite3", {
+    cwd: join(ROOT, "app"),
+    stdio: "inherit",
+    timeout: 120_000,
+  });
+  console.log("  ✅ Native module rebuilt successfully!\n");
+} catch (error) {
+  console.warn("  ⚠️  Failed to rebuild better-sqlite3 automatically.");
+  console.warn("     You can fix this manually by running:");
+  console.warn(`     cd ${join(ROOT, "app")} && npm rebuild better-sqlite3\n`);
+  // Don't fail the install — the user can fix manually
+}