Grid Lens by Bucket Labs is a really fun app that lets you take amazing grid photos with your iDevice. It create really great photos and you can customize the grid a lot, and you have a variety of filters also.
The User Interface: A cartographic interface is just beautiful and cute, there are several nice animations and overall the UI is just awesome and the Grid lens teams has done a great job with it. Its one of the most creative designs I have seen, and its really simple to use.
Taking Photos: There are a variety of customization possible. You can create grid or your own, change the grid color, border width etc. You can take photos by, either tapping each grid one by one, or, just tap the Shutter button and it will automatically capture each after a preset time interval, which you can change in the setting menu. (burst mode and manual shoot mode)
Editing: The app offers several filter that the makes the photos even more magical.
Sharing: You can share your photos online, through twitter, facebook, flickr, Instagram and email.
You can view a Flickr group of Grid lens photos here.
You can get Grid Lens from the App Store here.