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Free SAT, PSAT and ACT prep

CruxStudy is a free college admission test prep program: twelve full-length adaptive practice tests, more than 2,350 original questions with worked explanations, interactive lessons and a study plan built around your test date. Free to start, no account needed.

Start with the digital SAT guide, the ACT guide including the Science section, the PSAT and National Merit guide, or read how to choose between the SAT and the ACT.

About CruxStudy

A CruxSci pilot for schools

Start with the diagnostic. A short untimed check across every tested content area. It then asks your test date and builds a week-by-week plan around it.
SAT and PSAT practice tests adapt. How you do on the first module decides how hard the second one is, and your scaled score reflects it.
ACT practice runs the real shape: English, Math, Reading and the optional Science section, each on its own clock, scored 1-36 with a composite.
Quizzes give instant feedback. Every question comes with an explanation, right when you answer.
Highlight and annotate any passage during a test, just like the real testing apps. There is a line reader and a formula sheet too.
Lessons have watch mode. Full narration runs as closed captions, so you can play your own music and still get taught.
The Arcade is real practice in disguise. Geometry Playground, Line Lab, Formula Lab, Pythagoras Lab, Science Sprint and the Blitz games.
Switch SAT / PSAT / ACT anytime with the toggle in the top bar. Everything rescales: scores, content areas, and the question pool.
Four themes behind the 🎨 button: light, dark, neon and colorful.

On the free tier your progress is saved on this device only, with no account and no personal data collected.