diff --git a/main.js b/main.js
index 65189dc..bc9c8c1 100644
--- a/main.js
+++ b/main.js
@@ -1,8 +1,16 @@
 const { ipcMain, app, session } = require('electron')
 const { menubar } = require('menubar')
 const { autoUpdater } = require('electron-updater')
-const { onFirstRunMaybe } = require('./first-run')
-const path = require('path')
+const path = require('path');
+const { onFirstRunMaybe } = require('./first-run');
+const { Store } = require('./store');
+
+const store = new Store({
+  configName: 'preferences',
+  defaults: {
+    windowSize: { height: 400 },
+  },
+});
 
 const iconIdleMacOS = path.join(
   __dirname,
@@ -18,12 +26,14 @@ const iconIdleWindows = path.join(
   'tray-windows.ico'
 )
 
+const { height } = store.get('windowSize');
 const browserWindowOpts = {
   width: 460,
-  height: 400,
+  height,
   minWidth: 460,
   minHeight: 400,
-  resizable: false,
+  maxWidth: 460,
+  resizable: true,
   transparent: true,
   icon: process.platform === 'win32' ? iconIdleWindows : iconIdleMacOS,
   webPreferences: {
@@ -70,6 +80,9 @@ menubarApp.on('ready', () => {
       menubarApp.tray.setImage(iconIdleMacOS)
     }
   })
-})
-
 
+  menubarApp.window.on('resize', () => {
+    const { height } = menubarApp.window.getBounds();
+    store.set('windowSize', { height });
+  });
+})
diff --git a/package.json b/package.json
index 4bfbdf4..7117d5f 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,8 @@
       "index.html",
       "LICENSE",
       "main.js",
-      "first-run.js"
+      "first-run.js",
+      "store.js"
     ],
     "directories": {
       "buildResources": "buildResources",
diff --git a/store.js b/store.js
new file mode 100644
index 0000000..844673a
--- /dev/null
+++ b/store.js
@@ -0,0 +1,31 @@
+const { app } = require('electron');
+const path = require('path');
+const fs = require('fs');
+
+class Store {
+  constructor(opts) {
+    const userDataPath = app.getPath('userData');
+    this.path = path.join(userDataPath, `${opts.configName}.json`);
+
+    this.data = parseDataFile(this.path, opts.defaults);
+  }
+
+  get(key) {
+    return this.data[key];
+  }
+
+  set(key, val) {
+    this.data[key] = val;
+    fs.writeFileSync(this.path, JSON.stringify(this.data));
+  }
+}
+
+function parseDataFile(filePath, defaults) {
+  try {
+    return JSON.parse(fs.readFileSync(filePath));
+  } catch (error) {
+    return defaults;
+  }
+}
+
+module.exports = { Store };
diff --git a/tsconfig.json b/tsconfig.json
index 945fb21..7c1c7fe 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -19,6 +19,7 @@
     "src/**/*.ts",
     "src/**/*.tsx",
     "first-run.js",
+    "store.js",
     "main.js"
   ]
 }