SAT Prep: Practice & Study

1s0s.com

About this app

Prepare for the Digital SAT and PSAT with this comprehensive, completely free study app. No ads, no subscriptions, no account required.

Study 120+ practice questions covering all SAT content domains:

📖 READING & WRITING
• Craft and Structure — vocabulary in context, text structure, cross-text connections
• Information and Ideas — central ideas, command of evidence, inferences
• Standard English Conventions — grammar, punctuation, sentence structure
• Expression of Ideas — rhetorical synthesis, transitions

🔢 MATH
• Algebra — linear equations, systems, functions, inequalities
• Advanced Math — quadratics, exponentials, polynomials, nonlinear equations
• Problem-Solving & Data Analysis — ratios, probability, statistics, scatterplots
• Geometry & Trigonometry — area, volume, triangles, circles, coordinate geometry

✨ KEY FEATURES
• Study Mode — browse questions by topic with detailed flashcards
• Practice Quizzes — customizable quizzes with instant feedback and explanations
• Test Simulation — timed practice tests that mirror the real Digital SAT adaptive format
• Progress Tracking — see your accuracy by domain, skill mastery levels, and study streaks
• Desmos Calculator Tips — learn shortcuts for the built-in graphing calculator
• Detailed Explanations — every question includes step-by-step solutions and distractor analysis
• Dark Mode — easy on the eyes for late-night study sessions
• Works Offline — study anywhere, no internet required

Built using official College Board test specifications and research-backed study strategies. Questions are designed with realistic difficulty levels (easy, medium, hard) and plausible distractors that test common student misconceptions.

Whether you're aiming for a perfect 1600 or just getting started with test prep, this app helps you study smarter with targeted practice and clear explanations.

Completely free. No hidden costs. No data collection. Just study.

What’s new

Initial release — Free SAT prep with 200+ practice questions, study guides, timed test simulations, and progress tracking.