Adobe Lightroom Mobile (for iPhone)

To use the app, you must sign in with an Adobe ID. To use it in tandem with Lightroom on the desktop, you'll need a Creative Cloud subscription, starting at $9.99 a month.

Your Lightroom mobile collections appear here.

Collections use a justified arrangement, similar to the latest Flickr home page.

When you've made some edits, you can sync them with this option.

You can either use flag-and-reject or star ratings with this latest version of the app (on both iPhone and iPad).

The primary adjustments you find in Lightroom's quick edits section include exposure, contrast, white balance, shadows, highlights, vibrance, and clarity.

The crop tool offers preset aspect ratios and leveling.

The app includes Instagram-style effect filters, but also includes filter for things like sharpening and color temperature.

Multitouch gestures go a long way in this app. For example, tapping with two fingers shows or hides photo info.

You can have the app automatically upload all your photos shot in the iPhone to Adobe's cloud storage.

Here are your collection options for adding more photos.