diff --git a/README.md b/README.md
index 53a7981..08ec23f 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ Typical output:
 [ant:verify] INFO: Verification completed with 0 warnings and 0 errors.
 ```
 
-## Installation on a card
+## Installation on a (physical) card
 
 ```bash
 ./gradlew installJavaCard
@@ -87,6 +87,16 @@ Or inspect already installed applets:
 ./gradlew listJavaCard
 ```
 
+## Running on simulator (jCardSim)
+
+As simple as:
+
+```bash
+./gradlew run
+```
+
+By default the run task will run the main Java application implemented at: `main/java/main/Run.java`, using the `HelloWorldApplet` applet.
+
 ## Running tests
 
 ```
diff --git a/applet/build.gradle b/applet/build.gradle
index 8f2a977..d5a90f8 100644
--- a/applet/build.gradle
+++ b/applet/build.gradle
@@ -17,6 +17,7 @@ buildscript {
 
 apply plugin: 'com.klinec.gradle.javacard'
 apply plugin: 'idea'
+apply plugin: 'application'
 sourceCompatibility = 1.8
 
 // Common settings, definitions
@@ -43,6 +44,8 @@ repositories {
 dependencies {
     jcardsim 'com.klinec:jcardsim:3.0.5.11'
 
+    implementation 'com.klinec:jcardsim:3.0.5.11'
+
     testImplementation 'org.testng:testng:6.1.1'
     testImplementation 'org.slf4j:slf4j-api:1.7.33'
     testImplementation 'org.slf4j:slf4j-log4j12:1.7.33'
@@ -71,6 +74,10 @@ task dumpClassPath(dependsOn: ['idea']) {
     }
 }
 
+application {
+    mainClass = 'main.Run'
+}
+
 test {
     // useTestNG()
     useJUnitPlatform {
diff --git a/applet/src/main/java/applet/HelloWorldApplet.java b/applet/src/main/java/applet/HelloWorldApplet.java
new file mode 100755
index 0000000..715db3d
--- /dev/null
+++ b/applet/src/main/java/applet/HelloWorldApplet.java
@@ -0,0 +1,32 @@
+package applet;
+
+import javacard.framework.*;
+
+public class HelloWorldApplet extends Applet
+{
+
+	private static final byte[] helloWorld = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!'};
+
+	public static void install(byte[] bArray, short bOffset, byte bLength)
+	{
+		new HelloWorldApplet();
+	}
+
+	public HelloWorldApplet()
+	{
+		register();
+	}
+
+	public void process(APDU apdu)
+	{
+		sendHelloWorld(apdu);
+	}
+
+	// part of https://github.com/devrandom/javacard-helloworld/blob/master/src/main/java/org/gitian/javacard/HelloWorldApplet.java#L38
+	private void sendHelloWorld(APDU apdu) {
+		byte[] buffer = apdu.getBuffer();
+		short length = (short) helloWorld.length;
+		Util.arrayCopyNonAtomic(helloWorld, (short) 0, buffer, (short) 0, length);
+		apdu.setOutgoingAndSend((short) 0, length);
+	}
+}
diff --git a/applet/src/main/java/main/Run.java b/applet/src/main/java/main/Run.java
new file mode 100644
index 0000000..f779d74
--- /dev/null
+++ b/applet/src/main/java/main/Run.java
@@ -0,0 +1,28 @@
+package main;
+
+import applet.HelloWorldApplet;
+import com.licel.jcardsim.smartcardio.CardSimulator;
+import com.licel.jcardsim.utils.AIDUtil;
+import javacard.framework.AID;
+import javax.smartcardio.*;
+
+public class Run {
+    public static void main(String[] args){
+        // 1. create simulator
+        CardSimulator simulator = new CardSimulator();
+
+        // 2. install applet
+        AID appletAID = AIDUtil.create("F000000001");
+        simulator.installApplet(appletAID, HelloWorldApplet.class);
+
+        // 3. select applet
+        simulator.selectApplet(appletAID);
+
+        // 4. send APDU
+        CommandAPDU commandAPDU = new CommandAPDU(0x00, 0x90, 0x00, 0x00);
+        ResponseAPDU response = simulator.transmitCommand(commandAPDU);
+
+        System.out.println(new String(response.getData()));
+    }
+
+}
\ No newline at end of file