diff --git a/app/components/approveandcallgasrelayed.js b/app/components/approveandcallgasrelayed.js
new file mode 100644
index 0000000..6d51416
--- /dev/null
+++ b/app/components/approveandcallgasrelayed.js
@@ -0,0 +1,250 @@
+import Web3 from 'web3';
+
+import React from 'react';
+import { Grid, Row, Form, FormGroup, FormControl, HelpBlock, Button, ControlLabel, Col, InputGroup, Alert } from 'react-bootstrap';
+ 
+class ApproveAndCallGasRelayed extends React.Component {
+
+    constructor(props) {
+      super(props);
+
+      this.state = {
+        address: this.props.IdentityGasRelay.options.address,
+        topic: '0x4964656e',
+        to: '0x00',
+        value: 0,
+        data: '0x00',
+        nonce: 0,
+        gasPrice: 0,
+        gasLimit: 0,
+        gasToken: "0x0000000000000000000000000000000000000000",
+        signature: '',
+        symKey: '0xd0d905c1c62b810b787141430417caf2b3f54cffadb395b7bb39fdeb8f17266b',
+        kid: null,
+        skid: null,
+        msgSent: '',
+        payload: '',
+        messages: [],
+        web3W: null, 
+        errorMessage: ''
+      }; 
+    }
+
+    componentDidMount(){
+      __embarkContext.execWhenReady(async () => {
+
+        let web3W = new Web3('ws://localhost:8546');
+
+        let _skid = await web3W.shh.addSymKey(this.state.symKey);
+        let _kid = await web3W.shh.newKeyPair();
+        
+        this.setState({
+          kid: _kid,
+          skid: _skid,
+          whisper: web3W
+        });
+
+        web3W.shh.subscribe('messages', {
+          "privateKeyID": _kid,
+          "ttl": 20,
+          "minPow": 0.8,
+          "powTime": 1000
+        }, (error, message, subscription) => {
+            if(error) {
+              console.log(error);
+              this.setState({errorMessage: error.message})
+            } else {
+              this.state.messages.push(this.props.web3.utils.hexToAscii(message.payload));
+              this.setState({messages: this.state.messages})
+            }
+        });
+      });
+    }
+
+    handleChange(e, name){
+      this.state[name] = e.target.value;
+      this.setState(this.state);
+    }
+
+    async sendMessage(e){
+      
+      e.preventDefault();
+
+      this.setState({
+        messages: [],
+        errorMessage: ''
+      });
+
+      try {
+        let jsonAbi = this.props.IdentityGasRelay._jsonInterface.filter(x => x.name == "callGasRelayed")[0]
+        let funCall = this.props.web3.eth.abi.encodeFunctionCall(jsonAbi, [this.state.to, 
+                                                                           this.state.value, 
+                                                                           this.state.data, 
+                                                                           this.state.nonce, 
+                                                                           this.state.gasPrice, 
+                                                                           this.state.gasLimit,
+                                                                           this.state.gasToken,
+                                                                           this.state.signature]);
+        let msgObj = { 
+          symKeyID: this.state.skid, 
+          sig: this.state.kid,
+          ttl: 1000, 
+          powTarget: 1, 
+          powTime: 20, 
+          topic: this.state.topic, 
+          payload: this.state.address + funCall.slice(2)
+        };
+
+        console.log(msgObj);
+
+        this.props.web3.shh.post(msgObj)
+          .then((err, result) => {
+            console.log(result);
+            console.log(err);
+              this.setState({msgSent: result, payload: msgObj.payload});
+          });
+      } catch(error){
+        console.error(error);
+        this.setState({errorMessage: error.message})
+      }
+    }
+
+
+    async sign(ev){
+      ev.preventDefault();
+
+      this.setState({
+        msgSent: false,
+        payload: '',
+        messages: [],
+        errorMessage: ''
+      });
+
+      try {
+        let message = await this.props.IdentityGasRelay.methods.callGasRelayHash(
+            this.state.to,
+            this.state.value,
+            this.props.web3.utils.soliditySha3({t: 'bytes', v: this.state.data}),
+            this.state.nonce,
+            this.state.gasPrice,
+            this.state.gasLimit,
+            this.state.gasToken
+          ).call();
+
+        let accounts = await this.props.web3.eth.getAccounts();
+        let _signature = await this.props.web3.eth.sign(message, accounts[0]);
+
+        this.setState({signature: _signature});
+      } catch(error){
+        console.error(error);
+        this.setState({errorMessage: error.message})
+      }
+    }
+
+    render(){
+      return (<Grid>
+        {
+            this.state.errorMessage != '' ?
+            <React.Fragment>
+              <Alert bsStyle="danger">{this.state.errorMessage}</Alert>
+            </React.Fragment> : ''
+        }
+        <Form>
+          <Row>
+            <Col md={9}>
+              <ControlLabel>Identity Address</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="text" placeholder="Address" defaultValue={this.state.address} onChange={(ev) => this.handleChange(ev, 'address')}  />
+              </InputGroup>
+            </Col>
+          </Row>
+          <Row>
+            <Col md={4}>
+              <ControlLabel>To</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="text" defaultValue={this.state.to} onChange={(ev) => this.handleChange(ev, 'to')} />
+              </InputGroup>
+            </Col>
+            <Col md={1}> 
+              <ControlLabel>Value</ControlLabel>
+              <FormControl type="string" defaultValue={this.state.value} onChange={(ev) => this.handleChange(ev, 'value')} />
+            </Col>
+            <Col md={4}>
+              <ControlLabel>Data</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="string" defaultValue={this.state.data} onChange={(ev) => this.handleChange(ev, 'data')} />
+              </InputGroup>
+            </Col>
+          </Row>
+          <Row>
+            <Col md={1}>
+              <ControlLabel>Nonce</ControlLabel>
+              <FormControl type="string" defaultValue={this.state.nonce} onChange={(ev) => this.handleChange(ev, 'nonce')} />
+            </Col>
+            <Col md={1}>
+              <ControlLabel>Gas Price</ControlLabel>
+              <FormControl type="string" defaultValue={this.state.gasPrice} onChange={(ev) => this.handleChange(ev, 'gasPrice')} />
+            </Col>
+            <Col md={1}>
+              <ControlLabel>Gas Limit</ControlLabel>
+              <FormControl type="string" defaultValue={this.state.gasLimit} onChange={(ev) => this.handleChange(ev, 'gasLimit')} />
+            </Col>
+            <Col md={6}>
+              <ControlLabel>Gas Token</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="text" defaultValue={this.state.gasToken} onChange={(ev) => this.handleChange(ev, 'gasToken')} />
+              </InputGroup>
+              <HelpBlock>RND: {this.props.RND.options.address}</HelpBlock>
+              <HelpBlock>ETH: 0x0000000000000000000000000000000000000000</HelpBlock>
+            </Col>
+          </Row>
+          <Row>
+            <Col md={4}>
+              <Button bsStyle="primary" onClick={(ev) => this.sign(ev)}>1. Sign Message</Button>
+            </Col>
+            <Col md={5}>
+            <b>Signature: </b>{this.state.signature}
+            </Col>
+          </Row>
+          <Row>
+            <Col md={7}>
+              <ControlLabel>Symmetric Key</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="text" placeholder="Sym Key" defaultValue={this.state.symKey} readOnly={true}  />
+              </InputGroup>
+            </Col>
+            <Col md={2}>
+              <ControlLabel>Topic</ControlLabel>
+              <InputGroup> 
+                <InputGroup.Addon>0x</InputGroup.Addon>
+                <FormControl type="text" readOnly={true} defaultValue={this.state.topic} onChange={(ev) => this.handleChange(ev, 'topic')} />
+              </InputGroup>
+            </Col>
+          </Row>
+          <Row>
+            <Col md={4}>
+              <Button bsStyle="primary" disabled={this.state.signature == ""} onClick={(ev) => this.sendMessage(ev)}>2. Send via whisper</Button>
+            </Col>
+            <Col md={5}>
+              {this.state.msgSent}
+            </Col>
+          </Row>
+          
+          <Row>
+            <h3>Whisper Messages</h3>
+            {
+              this.state.messages.map((msg, i) => <p key={i}>{msg}</p>)
+            }
+          </Row>
+        </Form>
+      </Grid>
+      );
+    }
+  }
+
+  export default ApproveAndCallGasRelayed;
\ No newline at end of file
diff --git a/app/components/callgasrelayed.js b/app/components/callgasrelayed.js
index 5884567..1c491d1 100644
--- a/app/components/callgasrelayed.js
+++ b/app/components/callgasrelayed.js
@@ -1,10 +1,7 @@
-import EmbarkJS from 'Embark/EmbarkJS';
-import IdentityGasRelay from 'Embark/contracts/IdentityGasRelay';
-import RND from 'Embark/contracts/RND';
 import Web3 from 'web3';
 
 import React from 'react';
-import { Grid, Row, Form, FormGroup, FormControl, HelpBlock, Button, ControlLabel, Col, InputGroup } from 'react-bootstrap';
+import { Grid, Row, Form, FormGroup, FormControl, HelpBlock, Button, ControlLabel, Col, InputGroup, Alert } from 'react-bootstrap';
  
 class CallGasRelayed extends React.Component {
 
@@ -12,7 +9,7 @@ class CallGasRelayed extends React.Component {
       super(props);
 
       this.state = {
-        address: IdentityGasRelay.options.address,
+        address: this.props.IdentityGasRelay.options.address,
         topic: '0x4964656e',
         to: '0x00',
         value: 0,
@@ -28,12 +25,9 @@ class CallGasRelayed extends React.Component {
         msgSent: '',
         payload: '',
         messages: [],
-        web3W: null
+        web3W: null, 
+        errorMessage: ''
       }; 
-      
-      window['RND'] = RND;
-      window['IdentityGasRelay'] = IdentityGasRelay;
-
     }
 
     componentDidMount(){
@@ -56,10 +50,11 @@ class CallGasRelayed extends React.Component {
           "minPow": 0.8,
           "powTime": 1000
         }, (error, message, subscription) => {
-            if(error) 
+            if(error) {
               console.log(error);
-            else {
-              this.state.messages.push(web3.utils.hexToAscii(message.payload));
+              this.setState({errorMessage: error.message})
+            } else {
+              this.state.messages.push(this.props.web3.utils.hexToAscii(message.payload));
               this.setState({messages: this.state.messages})
             }
         });
@@ -75,77 +70,88 @@ class CallGasRelayed extends React.Component {
     }
 
     async sendMessage(e){
+      
       e.preventDefault();
 
       this.setState({
-        messages: []
+        messages: [],
+        errorMessage: ''
       });
 
-      let jsonAbi = IdentityGasRelay._jsonInterface.filter(x => x.name == "callGasRelayed")[0]
+      try {
+        let jsonAbi = this.props.IdentityGasRelay._jsonInterface.filter(x => x.name == "callGasRelayed")[0]
+        let funCall = this.props.web3.eth.abi.encodeFunctionCall(jsonAbi, [this.state.to, 
+                                                                this.state.value, 
+                                                                this.state.data, 
+                                                                this.state.nonce, 
+                                                                this.state.gasPrice, 
+                                                                this.state.gasLimit,
+                                                                this.state.gasToken,
+                                                                this.state.signature]);
+        let msgObj = { 
+          symKeyID: this.state.skid, 
+          sig: this.state.kid,
+          ttl: 1000, 
+          powTarget: 1, 
+          powTime: 20, 
+          topic: this.state.topic, 
+          payload: this.state.address + funCall.slice(2)
+        };
 
-      let funCall = web3.eth.abi.encodeFunctionCall(jsonAbi, [this.state.to, 
-                                                              this.state.value, 
-                                                              this.state.data, 
-                                                              this.state.nonce, 
-                                                              this.state.gasPrice, 
-                                                              this.state.gasLimit,
-                                                              this.state.gasToken,
-                                                              this.state.signature]);
-      let message = this.state.address + funCall.slice(2);
+        console.log(msgObj);
 
-      let msgObj = { 
-        symKeyID: this.state.skid, 
-        sig: this.state.kid,
-        ttl: 1000, 
-        powTarget: 1, 
-        powTime: 20, 
-        topic: this.state.topic, 
-        payload: message
-      };
-
-      console.log(msgObj);
-
-      web3.shh.post(msgObj)
-        .then((err, result) => {
-          console.log(result);
-          console.log(err);
-            this.setState({msgSent: result, payload: message});
-        });
+        this.props.web3.shh.post(msgObj)
+          .then((err, result) => {
+            console.log(result);
+            console.log(err);
+              this.setState({msgSent: result, payload: msgObj.payload});
+          });
+      } catch(error){
+        console.error(error);
+        this.setState({errorMessage: error.message})
+      }
     }
 
 
     async sign(ev){
       ev.preventDefault();
 
-      let dataHash = web3.utils.soliditySha3({t: 'bytes', v: this.state.data} );
-
       this.setState({
         msgSent: false,
         payload: '',
-        messages: []
-      })
+        messages: [],
+        errorMessage: ''
+      });
 
-      let message = await IdentityGasRelay.methods.callGasRelayHash(
-          this.state.to,
-          this.state.value,
-          dataHash,
-          this.state.nonce,
-          this.state.gasPrice,
-          this.state.gasLimit,
-          this.state.gasToken
-        ).call();
+      try {
+        let message = await this.props.IdentityGasRelay.methods.callGasRelayHash(
+            this.state.to,
+            this.state.value,
+            this.props.web3.utils.soliditySha3({t: 'bytes', v: this.state.data}),
+            this.state.nonce,
+            this.state.gasPrice,
+            this.state.gasLimit,
+            this.state.gasToken
+          ).call();
 
-      console.log("DataHash: " + dataHash);
-      console.log("CallGasRelayHash: " + message);
+        let accounts = await this.props.web3.eth.getAccounts();
+        let _signature = await this.props.web3.eth.sign(message, accounts[0]);
 
-      let accounts = await web3.eth.getAccounts();
-      let _signature = await web3.eth.sign(message, accounts[0]);
-
-      this.setState({signature: _signature});
+        this.setState({signature: _signature});
+      } catch(error){
+        console.error(error);
+        this.setState({errorMessage: error.message})
+      }
     }
 
     render(){
       return (<Grid>
+        {
+            this.state.errorMessage != '' ?
+            <React.Fragment>
+              <Alert bsStyle="danger">{this.state.errorMessage}</Alert>
+            </React.Fragment> : ''
+        }
         <Form>
           <Row>
             <Col md={9}>
@@ -195,7 +201,7 @@ class CallGasRelayed extends React.Component {
                 <InputGroup.Addon>0x</InputGroup.Addon>
                 <FormControl type="text" defaultValue={this.state.gasToken} onChange={(ev) => this.handleChange(ev, 'gasToken')} />
               </InputGroup>
-              <HelpBlock>RND: {RND.options.address}</HelpBlock>
+              <HelpBlock>RND: {this.props.RND.options.address}</HelpBlock>
               <HelpBlock>ETH: 0x0000000000000000000000000000000000000000</HelpBlock>
             </Col>
           </Row>
diff --git a/app/relayer-test.js b/app/relayer-test.js
index 1cc439b..271a96a 100644
--- a/app/relayer-test.js
+++ b/app/relayer-test.js
@@ -3,8 +3,11 @@ import ReactDOM from 'react-dom';
 import { Tabs, Tab } from 'react-bootstrap';
 
 import EmbarkJS from 'Embark/EmbarkJS';
-import CallGasRelayed from './components/callgasrelayed';
 import RND from 'Embark/contracts/RND';
+import IdentityGasRelay from 'Embark/contracts/IdentityGasRelay';
+
+import CallGasRelayed from './components/callgasrelayed';
+import ApproveAndCallGasRelayed from './components/approveandcallgasrelayed';
 
 import './relayer-test.css';
 
@@ -12,6 +15,9 @@ class App extends React.Component {
 
   constructor(props) {
     super(props);
+
+    window['RND'] = RND;
+    window['IdentityGasRelay'] = IdentityGasRelay;
   }
 
   _renderStatus(title, available){
@@ -26,7 +32,10 @@ class App extends React.Component {
     return (<div><h3>IdentityGasRelay - Usage Example</h3>
       <Tabs defaultActiveKey={1} id="uncontrolled-tab-example">
         <Tab eventKey={1} title="callGasRelayed">
-          <CallGasRelayed />
+          <CallGasRelayed IdentityGasRelay={IdentityGasRelay} RND={RND} web3={web3} />
+        </Tab>
+        <Tab eventKey={2} title="approveAndCallGasRelayed">
+          <ApproveAndCallGasRelayed IdentityGasRelay={IdentityGasRelay} RND={RND} web3={web3} />
         </Tab>
       </Tabs>
     </div>);