Sketchware tutorials-
This video demonstrates you how to create a chatting application like whatsapp without any coding.
This feature is not yet implemented in sketchware because we need a database to store messages,images etc., and a server to maintain.
So, Iam using a web tool called appsgeyser.
Link is here:
https://www.appsgeyser.com
You can create chatting application within 5 minutes...