Like Genius Scan, Pixoft's TurboScan is a good bet if you're looking for a scanner app that a lot of other users seem to like. The app had a five-month run in 2012 as the No. 1 business app download in the iPhone app store. Unlike other apps that emphasize simplicity and ease of use for smartphone newbies, TurboScan seems targeted at the sort of tech-savvy user who needs 32 gigabytes to have room for all his or her apps, and who likes a load of intricate features and functionality.
When you scan an image with TurboScan, for example, you can adjust manually for brightness and rotation, and choose one of multiple modes (color, black-and-white or photo). But the app has a lot of automatic image-optimizing features as well. For example, it's designed to compensate for the skewed perspective that occurs when you don't manage to hold the iPhone camera precisely parallel to the document you're shooting, or when the image is an open book that's slightly cured. There's also a nifty feature that allows you to take three consecutive pictures of a document and then combines them into a single, higher-quality image. Brighthand.com reviewer Mac McCarthy gives TurboScan a generally positive review, noting that it "produces good quality images and easy doc sharing, although it might take you a bit of work to optimize your images" [source: McCarthy].