JotNot Scanner Pro
JotNot Scanner Pro, developed by MobiTech 3000, is a bare-bones app without a lot of fancy features. Basically, it's a miniature copy machine, designed to take pictures of text documents that you can e-mail to your computer and then use in other, higher-powered programs. What makes JotNot so valuable is it takes really, really good pictures. The app automatically adjusts the perspective, sharpness and contrast of your iPhone camera to optimize images of text. It also allows you to crop a picture of a document by adjusting each corner independently of the others, and then tinkers with the contrast ratio, perspective and alignment on the fly. The app also allows you to convert color images to black-and-white, a big plus if you're going to run the image through an OCR program on your computer later.
Because of its simplicity, JotNot has some limitations, according to MacWorld reviewer Kate Dohe [source: Dohe]. It doesn't provide e-mail, sharing options or over-the-air printing, and there's no PDF conversion, so you have to save images to your iPhone photo library as JPGs instead. Dohe found that JotNot performed best with black text on white or light backgrounds, and conversely, created the poorest images from light text on dark or boldly colored or patterned backgrounds. She also noted that JotDot is a good companion program to Evernote, the popular free-form cloud information manager; Evernote's OCR feature was more accurate when using images created by JotNot, compared to images taken with the iPhone's basic camera app [source: Dohe].