# School AI > School AI is a free AI study assistant for students. It gives clear, step-by-step explanations for homework problems in math, physics, chemistry, biology, and more. School AI runs entirely in the browser — there is nothing to install and no signup is required to try it. ## What it is School AI is a web-based AI tutor (not a mobile app, not a Chrome extension) that helps students understand the method behind a problem, not just produce a final answer. It is positioned as a Photomath alternative that covers many subjects beyond math and supports follow-up questions. ## Site - [Home](https://school-ai.co): Overview, demo, and how School AI works. - [AI Math Solver](https://school-ai.co/math): Step-by-step solutions for algebra, geometry, calculus, statistics, and word problems. - [AI Physics Solver](https://school-ai.co/physics): Worked solutions and free-body diagrams for kinematics, dynamics, electricity, waves, and thermodynamics. - [AI Chemistry Solver](https://school-ai.co/chemistry): Step-by-step help for stoichiometry, equilibria, acid-base, and organic mechanisms — with balanced equations. ## Facts - Free to start; runs in any modern browser, including Chromebooks. - Covers math, physics, chemistry, biology, economics, computer science, English, history, and standardized test prep (SAT, ACT, AP, IB). - Designed for middle school, high school, and college students. - Shows the working step by step rather than only the final answer. - Supports follow-up questions in a conversational format. - Requires an internet connection (no offline mode).