Pro HDR is a very popular app for iPhone photography and it has just been updated with faster rendering, new filters and more. Take a look at What’s New below. This is a free update, if you have previously downloaded this app. If not, you can download it here. It retails for $1.99/£1.49/download.
Faster rendering, lots of great new filters, volume-button shutter release, more frames, choose frame style and thickness independently, more complete EXIF data saved (includes compass heading and date/time), fixed self-timer bug on iPad, supports larger image resolutions (up to 12 megapixels).