This application is designed for your socials and communications. DM for WhatsApp is an application that will let you have an efficient control on your contact list based on the number you typed in.  If you don't want to save numbers that much, then this application is designed perfectly for you because it allows you to send messages to numbers you haven't saved it on your contact list. This application is great to use because it supports most countries. With this, you can send messages without the need to save someone's number on your phone.