AstroWISP provides image processing tools for source extraction, background determination, point spread function/pixel response function fitting, and aperture photometry. The package is particularly well-suited for working with detectors featuring a Bayer mask (an array of microfilters applied to each detector pixel to allow color photography), such as consumer DSLR cameras. Such detectors pose significant challenges for existing tools while offering a much cheaper alternative to specialized devices. As a result, consumer DSLR cameras with Bayer masks are often underutilized for precision photometry. AstroWISP produces high-precision photometry from such images, enabling the use of such devices for detecting exoplanet transits, and is available for all major operating systems to ensure accessibility for amateur astronomers.