FX Photo Studio HD is a big update to MacPhun’s already capable iPad photo-editing application. There are roughly one gazillion photo-processing apps in the store, but FX stands out for two reasons. First, it is very easy to use, and second, it comes packed with great effects.

The app works like many others: You choose an image from your photo album and then flip through menus to enhance or destroy it. FX wins here, as it is fast, both in loading and in previewing the effects.

About those effects: There are 181 separate things you can do. Some effects are variations (there are a few different...