diff --git a/components/ListArticle.js b/components/ListArticle.js
index 880f7ca..189f0b7 100644
--- a/components/ListArticle.js
+++ b/components/ListArticle.js
@@ -15,6 +15,9 @@ import {
 import colors from '../utils/colors';
 const placeholder = require('../assets/default.png');
 
+/**
+* List Article component class
+*/
 export default  ListArticle = ({ text, image, navState, navigator }) => {
 
    return (
diff --git a/components/NavigationBar.js b/components/NavigationBar.js
index ea7eb83..f25bd69 100644
--- a/components/NavigationBar.js
+++ b/components/NavigationBar.js
@@ -1,9 +1,8 @@
 /**
  * Navigator Component
- * https://github.com/facebook/react-native
- * @flow
  */
 
+//React components
 import React, { Component } from 'react';
 import {
   StyleSheet,
@@ -12,7 +11,11 @@ import {
   Text,
   TouchableOpacity
 } from 'react-native';
+
+//utils
 import colors from '../utils/colors';
+//Navigation Bar route mapper. The one in charge of navigate from articles
+//to search result page
 const NavigationBarRouteMapper = {
 
   LeftButton: (route, navigator) => {
@@ -65,7 +68,7 @@ const styles = StyleSheet.create({
     marginVertical: 9,
   }
 });
-
+// Navigation compoment
 export default (
     <Navigator.NavigationBar
       style={ styles.navBar }