Lightt (for iPhone)

Upon launch, you can run through a quick tutorial of what the app does.

The app's simple start page offers three main choices: Happening Now, which shows you the most recent highlights among those you're following; Me, your own channel; and Featured, or top picks on the service.

Your profile includes a Lightt-style short video in place of a photo, and you can add your location, site, and a bio.

Just like on Twitter, you can follow other users' Lightt channels.

Whenever you finish shooting a photo sequence, you get these sharing options. You can make the images public, friends only, or shared to Facebook and/or Twitter.

You can favorite highlights by tapping the heart or adding comments by touching the speech bubble icon.

Comments get their own page, so there's some disconnect between them and the images with which they are associated.