Gridables

A one-time purchase — no subscriptions, no in-app purchases, no ads, and no data collection. Buy it once and it's yours. Gridables is a tap, listen, and learn math game designed with children with low vision and Cortical Visual Impairment (CVI) in mind. Research shows that children with CVI can struggle with visual clutter and often see best with high contrast and favored colors like red, yellow, or blue. Gridables lets you choose a simple black or white background with bold red, yellow, or blue figures, so every number and tool stands out clearly. At the heart of the app is a guided place-value grid for addition, subtraction, multiplication, and division. Kids drag to place digits column by column, working through carrying and regrouping step by step, with every number spoken aloud as they go. Alongside the grid, Gridables includes hands-on visual tools — bead bars, base-ten blocks, tally marks, a frog number line, and a calculator — so kids can see and hear math concepts, not just read them. Gridables also lets you scan a real paper worksheet and complete it right on screen, with the same large, high-contrast grid and spoken feedback. Customize background and font colors, number fonts, numpad size, and voice settings to fit each child's needs. We created Gridables because our son, who has Cortical Visual Impairment, struggled with math worksheets that were too cluttered and hard for him to see. His vision therapist taught us that he learns best with yellow on a black background and lots of repetition. Gridables was built around that — a simple, high-contrast grid where he can see each number, hear it spoken aloud, and work through problems at his own pace. He also struggles with using a pencil to write numbers. Watching him go from avoiding math to working through it on his own has been the best part of building this app.