WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
Group and private chat, file sharing, and integrations.
Bring your conversations to life with photos, emoji, and even group video calls for free.
Skype is for doing things together, whenever you’re apart. Skype’s text, voice and video make it simple to share experiences with the people that matter to you, wherever they are.