After our poll on best WhatsApp alternatives, we've got a lot of replies how great #SimpleX is. 
So we added them to our comparison: https://tuta.com/blog/best-whatsapp-alternatives-privacy
What are your favorite chat apps? Do you use a WhatsApp alternative for better #privacy? 
Let us know via the comments, we'll likely update the blog post again soon! 
@Tutanota #deltachat is the most universal among them 