A social network built for two

With busy lives, couples often find it hard to schedule time for their relationship. Technology has made that easier — random texts and e-mails throughout the day, private social-networking messages or even video chats — but those interactions can be scattered across platforms. Enter Pair, a new app that creates a special social network for two. The app uses messages, video, photos, a group sketchbook and a ridiculous but sort of adorable feature called the thumb-kiss to keep couples connected. The app would be perfect for long-distance couples who stay glued to their smartphones. There’s no Android version yet, so star-crossed cross-platform lovers will have to stick to more traditional channels. Free, for iOS devices.