More than 250 million people log on to Skype monthly to chat with friends, and the iPad app is one of the best ways to join the conversation. Skype allows for unlimited HD video calls from iPad 4 and higher, and you can send your loved ones a video message when they don't have time to talk. Need to make a call or send a text in a pinch? You can do so on Skype for a small cost. All versions of Skype are compatible with one another, so you can use your iPad to catch up with friends on a PC, Mac, smartphone or even an Xbox One.