# Build Your First Android App

> **NOTE** The Getting Started docs show you how to build your first Mitter.io app with our cloud-hosted sandbox only.
>
> To use it with your docker container, simply change the base API Url (when creating the mitter object) to the address of your running docker container.

## Introduction

Before we get started with this tutorial, let’s have a quick primer on what Mitter.io is and what we will be building in this tutorial.

### What is Mitter.io?

Mitter.io is a messaging platform that allows you to build apps around messaging. You can treat a message as something more than just an envelope for text with our platform.

### What are we going to build?

In this tutorial, we’re going to build a simple chat app which allows private replies to specific participants in a group.

### Where's the repository for this project?

You can find the complete project [**hosted on GitHub**](https://github.com/mitterio/mitter-android-demo). Feel free to clone the repository and play around.

### Tell me more!

Want a detailed guide to building with the platform? Watch our webinars [here](https://www.youtube.com/watch?v=2EERT1O0CHQ)!