Viber's intuitive interface makes it easy to navigate, letting you start a message or call quickly.
While the interface is not very exciting, it's easy to use and offers features you won't find in other messaging apps for smartphones.
Once you figure it out, Celestial is easy to use, but a couple of design choices make the buttons difficult to understand.
The interface for Meerkat doesn't have much to it. Unless you're shooting a new video or receive a link to one, there's not much to do in the app.
Twitter's Periscope makes it easy upon launch to start viewing live streams immediately or create your own in only a couple of taps.
This photo editor has tons of features, but all are easily accessed through one slide-out menu.
Watch this epic supercut by user-experience designer Dino Ignacio. It shows every time a "Star Wars" character interacted with hardware and software interfaces.
Along with its new Sling TV Internet TV service, Dish rolled out some other new products and services.
This app has many features that could make it your main photo app, but still needs some work.
A subdued address bar and revamped new-tab page gives the browser a clean look that the Russian company says is better suited to Web apps. Yandex plans a mobile-device version later.