I want a true Bluebook-style application that lets students sign up with email verification, log in securely, and sit for timed SAT Math sections. The same codebase should compile cleanly for iOS and Android phones as well as native Windows and Mac desktops so students can practise on any device they own. Core flow • Student creates an account, verifies via emailed link, and lands on a simple dashboard. • From there they can launch a full-length math section that mimics official SAT timing, auto-advances after each question, and locks once time expires. • At the end of the session the app instantly scores the attempt, shows the correct answers with explanations, and saves the record for later review. I will supply the question bank in CSV; the app just needs an import routine. No social or phone logins are required—email only. A lightweight admin screen (web or desktop) is fine for adding new tests and viewing aggregate results. Deliverables – Universal mobile build (iOS & Android) signed and ready for store submission – Desktop installers for Windows and Mac – Source code, documented, with build instructions – Brief hand-off video or call walking through deployment and the test-creation workflow Successful completion means the above builds install, run, and enforce the correct SAT timing on at least one full test without errors.