Fotor HDR is a new iPhone app for those of you who like to take high dynamic range (HDR) photos. The US$1.99 app adds some very sophisticated processing options after you take the multiple images required for an HDR image.
The main feature Fotor HDR offers is preset styles. Rather than simply providing filters, the Fotor styles are geared to HDR images, and are similar to what you see in the pro HDR apps you see on the Mac, such as Photomatix and HDR Efex Pro 2 from Nik/Google.
Here's how the app works: you frame your image on screen, with Fotor offering a grid to help you compose and level the camera. There are two picture-taking modes -- one mode grabs the images and processes them, while the other mode allows you to continue taking photos rapidly without waiting for processing and aligning (you can do that after your photo session). Processing and aligning are pretty quick on an iPhone 5s, and I think it's quite acceptable on older hardware as well.