diff --git a/android-app/food_sense/index.android.js b/android-app/food_sense/index.android.js
index e44b7da..6793273 100644
--- a/android-app/food_sense/index.android.js
+++ b/android-app/food_sense/index.android.js
@@ -11,12 +11,22 @@ import {
   Text,
   View,
   StatusBar,
-  Navigator
+  Navigator,
+  BackAndroid
 } from 'react-native';
 
 import Login from './src/components/Login';
 import SignUp from './src/components/SignUp';
 import Journal from './src/components/Journal';
+
+BackAndroid.addEventListener('hardwareBackPress', () => {
+  if (_navigator.getCurrentRoutes().length === 1  ) {
+     return false;
+  }
+  _navigator.pop();
+  return true;
+});
+
 export default class food_sense extends Component {
   render() {
     return (
diff --git a/android-app/food_sense/src/components/SignUp.js b/android-app/food_sense/src/components/SignUp.js
index b175b45..28b9566 100644
--- a/android-app/food_sense/src/components/SignUp.js
+++ b/android-app/food_sense/src/components/SignUp.js
@@ -1,6 +1,6 @@
 import React, { Component} from 'react';
-import { StyleSheet, View, Text, Alert, TextInput, StatusBar, ScrollView} from 'react-native';
-import {Icon, Button} from 'native-base';
+import { StyleSheet, View, Text, Alert, TextInput, StatusBar, ScrollView, Button} from 'react-native';
+import {Icon} from 'native-base';
 import FontAwesomeIcon from 'react-native-vector-icons/FontAwesome';
 import { Fumi } from 'react-native-textinput-effects';
 import Dimensions from 'Dimensions';
@@ -20,18 +20,13 @@ export default class SignUp extends Component{
 	render() {
 		return (
 			<View style={styles.container}>
-				<View style = {styles.header}>
-					<View style = {styles.headerRect} >
-						<Button transparent>
-							<Icon name='ios-arrow-back' style={{color: "#FFFFFF", fontSize: height * .08, marginTop: height * .02}} />
-						</Button>
-						<Text style = {styles.headerText}>Food Sense</Text>
-					</View>
-				</View>
 				<View>
+					<View style={styles.logoContainer}>
+						<Text style={styles.title}>Food Sense</Text>
+					</View>
 					<ScrollView>
 						<Fumi
-							style = {styles.input}
+							style = {{marginTop: height * .15}}
 							label={'Username'}
 							iconClass={FontAwesomeIcon}
 							iconName={'envelope'}
@@ -82,11 +77,15 @@ export default class SignUp extends Component{
   								this.refs.passwordText.focus();
   							}}
   						  />
-						  <Button block style = {{marginTop: height * .02, backgroundColor: '#26A69A'}}>
-						  	<Text style={{color: '#FFFFFF', fontSize: height * .03}}>
-							Create Account!
-							</Text>
-						  </Button>
+						  <View style = {{marginTop: height * .05}}>
+	  						<Button
+	  							ref = "loginButton"
+	  							onPress = {()=>onLoginPress(this.state.username, this.state.password, this.props.navigator)}
+	  							title = "Create Account"
+	  							color = "#26A69A"
+	  							accessibilityLabel="Login to the Application after entering password"
+	  						/>
+	  					</View>
 					</ScrollView>
 				</View>
 
@@ -97,8 +96,7 @@ export default class SignUp extends Component{
 
 const styles = StyleSheet.create({
 	container: {
-		flex:1,
-		backgroundColor: '#E0F2F1'
+		flex:1
 	},
 	logoContainer: {
 		alignItems: 'center',
@@ -110,7 +108,7 @@ const styles = StyleSheet.create({
 		fontSize: 30
 	},
 	responsiveSpacing: {
-		marginTop: height * .1
+		marginTop: 0
 	},
 	header: {
 
@@ -139,8 +137,9 @@ const styles = StyleSheet.create({
 
 });
 
-const onBack = (_navigator) => {
-	_navigator.push({
-		id: 'SignUp'
-	})
-};
+{/*This tests to see if an email address is in a valid format*/}
+function validateEmail(email)
+{
+    var re = /\S+@\S+\.\S+/;
+    return re.test(email);
+}
diff --git a/android-app/food_sense/src/components/TabHolder.js b/android-app/food_sense/src/components/TabHolder.js
index d60c39b..daedde0 100644
--- a/android-app/food_sense/src/components/TabHolder.js
+++ b/android-app/food_sense/src/components/TabHolder.js
@@ -1,55 +1,8 @@
-import React, { Component} from 'react';
-import { StyleSheet, View, StatusBar } from 'react-native';
-import {Container, Content, Header, Title, Button, Subtitle, Left, 
-	Right, Body, Icon, Tabs} from 'native-base';
-import Dimensions from 'Dimensions';
-
-import JournalTab from './JournalTab';
-import PredictorTab from './PredictorTab';
-
-const height = Dimensions.get('window').height;
-const width = Dimensions.get('window').height;
-
-export default class tabHolder extends Component{
-	render() {
-		return (
-			<Container theme = {{brandPrimary:'#029c88'}}>
-				<Header style = {{backgroundColor: '#029c88'}}>
-					<Left>
-						<Button transparent>
-							<Icon name="menu" />
-						</Button>
-					</Left>
-					<Body>
-						<Title>Food Sense</Title>
-					</Body>
-					<Right>
-						<Button transparent>
-							<Icon name="settings" />
-						</Button>
-					</Right>
-				</Header>
-
-				<Content>
-					<View>
-						<StatusBar
-							backgroundColor='#029c88'
-							barStyle="light-content"
-						/>
-					</View>
-					<Tabs style = {styles.tabStyle}>
-						<JournalTab tabLabel='Journal' />
-						<PredictorTab tabLabel='Predictor' />
-					</Tabs>
-				</Content>
-			</Container>
-		);
-	}
-} 
-
-const styles = StyleSheet.create({
-	tabStyle:{
-		backgroundColor: '#029c88'
-	}
-
-});
\ No newline at end of file
+<View style = {styles.header}>
+	<View style = {styles.headerRect} >
+		<Button transparent>
+			<Icon name='ios-arrow-back' style={{color: "#FFFFFF", fontSize: height * .08, marginTop: height * .02}} />
+		</Button>
+		<Text style = {styles.headerText}>Food Sense</Text>
+	</View>
+</View>