Peephole is an application for the iPhone and iPod Touch that focuses solely on the photos people upload to Twitter. You can view photos from the public timeline, trends, nearby users, friends, favorites or search for a specific keyword. The app is smooth, solid and enjoyable to use.

At first, you’ll need to tap on the settings button and add your Twitter account. Once entered, you’ll always be logged in when you open the app. The main screen includes several options to choose from to find the photos you want to see. Tapping on trends will bring up a list of the current top Twitter trends to browse through. Selecting a specific trend will load up to approximately one hundred photos. After one hundred, you can tap to load more photos. When you tap on a photo, it goes full screen with the user’s name at the top. You can pinch, zoom and pan just like in any other photo application. The tweet that goes with the photo is displayed at the bottom of the screen. The tweet, user name and navigation buttons will all fade away when you tap on the photo, so you can see it full screen and take a screenshot if you’d like.

The navigation buttons on the bottom of the screen give you some options for the photo. You can mark it as a favorite, advance to the next picture or go back to the previous picture, play a slideshow of all the pictures and bring up sharing options. If you tap the play button, the app goes into a slideshow mode and each photo will be displayed for about five seconds before automatically advancing to the next one.

Besides saving a photo to your camera roll, you can also email it right from inside the app. Other options include replying to the tweet, retweeting and following the user who posted the photo. If you tap on the user’s profile picture, a list of all the photos recently posted by that user are displayed.

The same features in trends are available with all the other search options and work very well. However, I noticed a couple of things that might be of some concern. First, when you view pictures in trends, you will likely come up with double images. These images are the same, but from different Twitter users that may have retweeted a message with a photo attached. This gets a bit annoying if an image is really popular, as you may see quite a few of the same one. The second item that caught my attention is the lack of a flagging system. Just from viewing the top trends, I came across a few inappropriate photos of nudity. The app is rated 17+, but it would still be nice to be able to flag and filter your results from inside the application. Another feature that might be nice to add would be the ability to share a photo to Facebook or blogs. Also, something surprising to me is the lack of a way to just start a new tweet. You can reply and retweet, but there is no option to start a new message. Even if you simply delete the username in a reply to compose a tweet, you also can’t attach a photo. Being a photo app, you would think you would have the ability to tweet and attach a photo to it. Lastly, I recommend a name change. The title, Peephole, may seem to have a negative connotation that might turn some consumers away.

Peephole really is a fantastic supplement to your Twitter client with the ability to search for a specific topic and view the photos associated with it. The application is a smooth and solid experience you’ll definitely enjoy. With a few additional features, I have no doubt this app will be successful. Even now, Peephole is definitely worth checking out and is one app that will stay on my device for a while, if not, indefinitely.