Do you have UI customization features for an application?

Please find QuickBlox UI Kit here: https://quickblox.com/ui-kit/ 

You can switch between different options of ready to use flows. The Kit is compatible with Sketch and cross-platform. 

Feel free to check our official documentation for more information that will help you to integrate QuickBlox services into your applications / projects or contact our Support team by submitting a ticket if you have any other questions.