diff --git a/functions/index.js b/functions/index.js
index c082252..ee17707 100644
--- a/functions/index.js
+++ b/functions/index.js
@@ -2,17 +2,17 @@
 
 const functions = require('firebase-functions');
 const reciveToken = require('./reciveToken')
-const syncPosts = require('./syncPosts')
 const deletePost = require('./deletePost')
 const createProfile = require('./createProfile')
 const createProfileSteem = require('./createProfileSteem')
 const saveComment = require('./saveComment')
 const editTheme = require('./editTheme')
+const upvotePost = require('./upvotePost')
 
-exports.syncPosts = functions.https.onRequest(syncPosts.app);
 exports.reciveToken = functions.https.onRequest(reciveToken.app);
 exports.deletePost = functions.https.onRequest(deletePost.app);
 exports.createProfile = functions.https.onCall(createProfile.app);
 exports.createProfileSteem = functions.https.onCall(createProfileSteem.app);
 exports.saveComment = functions.https.onCall(saveComment.app)
-exports.editTheme = functions.https.onCall(editTheme.app)
\ No newline at end of file
+exports.editTheme = functions.https.onCall(editTheme.app)
+exports.upvotePost = functions.https.onCall(upvotePost.app)
\ No newline at end of file
diff --git a/functions/upvotePost.js b/functions/upvotePost.js
new file mode 100644
index 0000000..018e0ff
--- /dev/null
+++ b/functions/upvotePost.js
@@ -0,0 +1,50 @@
+const defaultApp = require('./defaultApp')
+const db = defaultApp.app.firestore();
+const app = (data, context) => {
+  //Adding an upvote to the post.upvotes
+  console.log(data)
+  const docRef = db.collection('posts').doc(data.permlink)
+  const checkToken = defaultApp.app.auth().verifyIdToken(data.token)
+  .then((decodedToken) => {
+    const uid = decodedToken.uid;
+    if(uid === data.uid) {
+      return true
+    } else {
+      return false;
+    }
+  }).catch(err => console.log(err))
+  if(checkToken) {
+    if(data.weight === 0) {
+      //weight 0 means user is unvoting the post
+      docRef.get().then(res => res.data()).then(res => {
+        const filtered = res.upvotes.filter(vote => {
+          return vote.voter !== data.voter
+        })
+        const upvotes = res.upvotes !== undefined ? filtered : []
+        const actions = res.actions !== undefined ? res.actions - 1 : 0
+        return docRef.update({upvotes: upvotes, actions: actions})
+      }).catch(err => console.log(err))
+    } else if(data.weight > 0) {
+      //upvoting the post
+      const vote = [
+        { 
+          timestamp: new Date(),
+          id: data.id,
+          voter: data.voter,
+          uid: data.uid,
+          platform: data.platform,
+          weight: data.weight
+        }
+      ]
+      docRef.get().then(res => res.data()).then(res => {
+        const upvotes = res.upvotes !== undefined ? vote.concat(res.upvotes) : vote
+        const actions = res.actions !== undefined ? res.actions + 1 : 1
+        return docRef.update({upvotes: upvotes, actions: actions})
+      }).catch(err => console.log(err))
+    }  
+  }
+  
+};
+module.exports = {
+  app
+}