The AIM Explorer is a free simulation that combines grade-leveled digital text with access features common to most text readers and other supported reading software. Magnification, custom text and background colors, text-to-speech, text highlighting, and layout options are presented in a logical sequence to help struggling readers decide which of these supports might help them to access and understand text. The AIM Explorer is designed to be used by a reader working collaboratively with an educator, tutor, parent, or assistive technology specialist as a guide.