diff --git a/submissions/Focus Timer/popup.js b/submissions/Focus Timer/popup.js
new file mode 100644
index 00000000..0a32f2af
--- /dev/null
+++ b/submissions/Focus Timer/popup.js	
@@ -0,0 +1,125 @@
+document.addEventListener('DOMContentLoaded', function() {
+  const toggleFocusButton = document.getElementById('toggleFocus');
+  const newSiteInput = document.getElementById('newSite');
+  const addSiteButton = document.getElementById('addSite');
+  const siteListElement = document.getElementById('siteList');
+  const timerInput = document.getElementById('timer');
+  const timeRemainingElement = document.getElementById('timeRemaining');
+
+  let focusMode = false;
+  let blockedSites = [];
+  let timerEnd = 0;
+  let countdownInterval;
+
+  // Load saved state
+  chrome.storage.local.get(['focusMode', 'blockedSites', 'timerEnd'], function(result) {
+    if (result.focusMode) {
+      focusMode = result.focusMode;
+      toggleFocusButton.textContent = 'Disable Focus Mode';
+      toggleFocusButton.classList.add('active');
+    }
+    
+    if (result.blockedSites) {
+      blockedSites = result.blockedSites;
+      renderSiteList();
+    }
+    
+    if (result.timerEnd && result.timerEnd > Date.now()) {
+      timerEnd = result.timerEnd;
+      startCountdown();
+    }
+  });
+
+  // Toggle focus mode
+  toggleFocusButton.addEventListener('click', function() {
+    focusMode = !focusMode;
+    
+    if (focusMode) {
+      toggleFocusButton.textContent = 'Disable Focus Mode';
+      toggleFocusButton.classList.add('active');
+      
+      // Set timer if focus mode is enabled
+      const minutes = parseInt(timerInput.value) || 25;
+      timerEnd = Date.now() + minutes * 60 * 1000;
+      
+      chrome.storage.local.set({ 
+        focusMode: true,
+        timerEnd: timerEnd
+      });
+      
+      startCountdown();
+    } else {
+      toggleFocusButton.textContent = 'Enable Focus Mode';
+      toggleFocusButton.classList.remove('active');
+      chrome.storage.local.set({ focusMode: false });
+      clearInterval(countdownInterval);
+      timeRemainingElement.textContent = '';
+    }
+    
+    chrome.runtime.sendMessage({ action: 'toggleFocusMode', focusMode: focusMode });
+  });
+
+  // Add new site to block
+  addSiteButton.addEventListener('click', function() {
+    const site = newSiteInput.value.trim().toLowerCase();
+    if (site && !blockedSites.includes(site)) {
+      blockedSites.push(site);
+      chrome.storage.local.set({ blockedSites: blockedSites });
+      newSiteInput.value = '';
+      renderSiteList();
+    }
+  });
+
+  // Render the list of blocked sites
+  function renderSiteList() {
+    siteListElement.innerHTML = '';
+    blockedSites.forEach(function(site) {
+      const siteItem = document.createElement('div');
+      siteItem.className = 'site-item';
+      
+      const siteName = document.createElement('span');
+      siteName.textContent = site;
+      
+      const removeButton = document.createElement('button');
+      removeButton.textContent = '✕';
+      removeButton.className = 'remove-site';
+      removeButton.addEventListener('click', function() {
+        blockedSites = blockedSites.filter(s => s !== site);
+        chrome.storage.local.set({ blockedSites: blockedSites });
+        renderSiteList();
+      });
+      
+      siteItem.appendChild(siteName);
+      siteItem.appendChild(removeButton);
+      siteListElement.appendChild(siteItem);
+    });
+  }
+
+  // Start countdown timer
+  function startCountdown() {
+    clearInterval(countdownInterval);
+    
+    function updateCountdown() {
+      const now = Date.now();
+      const timeLeft = timerEnd - now;
+      
+      if (timeLeft <= 0) {
+        clearInterval(countdownInterval);
+        timeRemainingElement.textContent = '';
+        focusMode = false;
+        toggleFocusButton.textContent = 'Enable Focus Mode';
+        toggleFocusButton.classList.remove('active');
+        chrome.storage.local.set({ focusMode: false });
+        chrome.runtime.sendMessage({ action: 'toggleFocusMode', focusMode: false });
+        return;
+      }
+      
+      const minutes = Math.floor(timeLeft / 60000);
+      const seconds = Math.floor((timeLeft % 60000) / 1000);
+      timeRemainingElement.textContent = `${minutes}:${seconds.toString().padStart(2, '0')}`;
+    }
+    
+    updateCountdown();
+    countdownInterval = setInterval(updateCountdown, 1000);
+  }
+});