The easiest way to

Add instant messaging to your iPhone or Android app

Chat SDK allows your users to communicate which means that you can start to build a community and increase engagement.
It’s free, open source and easy to integrate which takes the stress out of adding chat to your app.
Open Source

Chat SDK is free and open source giving you complete end-to-end control of the code and your users’ data

Quick integration

We provide a complete UI framework and demo app lets you get started simply and efficiently.


The modular architecture provides advanced users with easy ways to customise and extend the framework.

Download the Chat SDK for free

It’s easy to get started, you can clone the framework from Github or download it directly.
You can have the demo app up and running in minutes following the detailed setup guides.


For a full list of the features you can check out the features page.
Private and group chats

Allow users to create 1-to-1, group and public chat rooms

Flexible Login

Login using an email address, Facebook, Twitter or Anonymously. Easy integrating with servers is also supported

iPhone and Android

Chat SDK supports has native versions for iOS and Android. The two versions are fully intercompatible

Multiple Message Types

Send text, image and location messages using the core framework. Modules to support audio, video and sticker messages are also available


Support up to 10k daily users on the Firebase free tier. For $25 per month you can have 100k daily users

Push Notifications

Push notifications are supported out of the box. That means your users will never miss a message

Modules and Extensions

There are a number of free and premium extensions that easily allow you to extend the functionliaty of the Chat SDK.

Meet the team

We are a dedicated team of developers with extensive instant messaging experience. Our mission is to make adding chat to your app as easy as possible. If you need help or advice adding the Chat SDK to your project, you can contact us at
Ben Smiley
Founder, iOS and web developer
Simon Smiley
iOS Developer
Erik Berg
Android developer

Recent projects

Our team is ready to help you integrate the Chat SDK with your app. Check out some of our recent work.

Our Clients

  • We invested in the ChatSDK to add a chat layer to our social network. We were pleased by the collaboration with Ben and Simon on the integration of the SDK in our app. We received a professional work and support until the app released into production. We highly recommend! ⭐⭐⭐⭐⭐
    Moez Jomâa
  • Great product with Great Customer support. We highly recommend their product and services. ⭐⭐⭐⭐⭐
  • The Smiley Brothers are responsive towards any questions and enquiries asked. Codes were provided within hours after purchase. The default project opens nicely in Xcode and compiled and ran without any errors. Codes are neat and tidy, easily customisable. Highly recommended SDK! ⭐⭐⭐⭐⭐
    Melvin Tan
  • This is Chat SDK is amazing. Very robust and feature rich. The best part is the support that Simon provides. He really cares about his product and is always trying to make it better. It is definitely one of the most impressive Chat SDK's out there. ⭐⭐⭐⭐⭐
    Michael Vo
  • High quality product, well documented (step by step). Customer service very efficient and professional. Strongly recommended. ⭐⭐⭐⭐⭐
    Matthias BUREL
  • It is a good component and well designed. Perhaps even overdesigned. I think the component should be more ready to integrate with custom products. Now is more like a product that you have to understand in order to integrate. For example, in my product I have contacts from linkedin and internal contacts. It should be easy to add a datasource for your contacts. I had to go through the code to understand that, instead of just implementing an interface. It has also some small bugs but Ben is very willing to help. All in all, a good product, better than the open source alternatives (for now?) ⭐⭐⭐⭐
    Martin Palatnik
  • If you are thinking about making this purchase then just do it. It is so worth the money for reasons you can't yet factor in. I'm the founder of an app with millions of downloads and built a complete messaging platform from the ground up in-house. Instead of using that we are using Chat SDK + Firebase and Parse Push. Our developers have only the nicest things to say about the source. There was an issue with some customization we did on our end that was causing above average data consumption on Firebase and both Ben and Firebase support were on it amazingly fast and we were able to trouble shoot and get to the root of the issue rather quickly. I don't do reviews (although I should) as much as I should but this one I felt I had to. To have the support that Ben (Chat SDK) provided as they did is just not what's the status quo by any means. I have already purchased the Android Chat SDK and really wish Ben and his team a lot of success!!! If there was an option for 10 stars I would have given it to them. Thanks again, Joel S. ⭐⭐⭐⭐⭐
    Joel S
  • Excellent Product. Quick responsive response from Developers. Highly recommend it. K ⭐⭐⭐⭐⭐
    Tefera Kebede
  • The customer service provided by Ben and his team is out of this world. I am seriously impressed by responsiveness and quality of support. The code is an absolutely work of art. Strongly recommended! ⭐⭐⭐⭐⭐
  • Not only is the product great, but I also can't praise enough the responsiveness, communication and work done by Simon in helping adapt it to our needs. The developer is recommended as highly as the product. ⭐⭐⭐⭐⭐