Lumi AI

The SAT Math Gym for Future 800 Scorers

Train hard today. Test with confidence tomorrow.

Try Lumi Download App
Start with a Practice Set

How can I help you?

Or sign in and turn your own materials into Practice

Upload College Board materials to Lumi, or choose a practice test below.

Drag & drop math files here
Instruction

How to use Lumi effectively?

Turn any SAT Math material into ready-to-train practice
Our strength

Why students love Lumi?

Stuck mid-solution? Ask Lumi in Live Mode on your tablet

Keep solving like you would on paper. When something feels wrong, circle it and ask Lumi by voice to see where your work breaks down.

Stuck mid-solution? Ask Lumi in Live Mode on your tablet

Learn from expert SAT Math solutions

Understand the right approach, avoid common traps, and stop losing points for small mistakes.

Learn from expert SAT Math solutions

You are not the only one grinding SAT Math

See who is practicing on the leaderboard, join discussions, and keep going with students who are working toward the same score goal.
Pricing

Explore your options

Try Learner free for 30 days - no credit card required. Keep going for as little as you need, and cancel whenever.

Free
Free plan for new users - Perfect to get started
$0
Get Started
  • Practice with your own materials Upload worksheets, screenshots, or PDFs and turn them into SAT Math practice.
  • 50 questions /day Ask Lumi when you are stuck or need a hint.
  • 20 minutes of Live Mode /day Learn like having a 1-on-1 tutor: ask by voice, snap your work, or write on canvas so Lumi can spot your mistakes.
  • Free Lumi Live Exam Test like it’s real with thousands of other students.
Learner
30 days free
Starter plan for light users
$16$0/month
Start 30-day free trial

No credit card required. After 30 days your account returns to the Free plan.

  • Practice with your own materials Upload worksheets, screenshots, or PDFs and turn them into SAT Math practice.
  • 200 questions /day Train longer, ask more, review mistakes, and go deeper.
  • 1,200 minutes of Live Mode /month Learn like having a 1-on-1 tutor: ask by voice, snap your work, or write on canvas so Lumi can spot your mistakes.
  • Free Lumi Live Exam + detailed report Get your predicted SAT Math score, mistake analysis, and skill breakdown.

Cancel anytime

FAQs

Frequently asked questions

Straight answers on how Lumi works, what the free plan gets you, and how Practice, Live Exam, and Learn fit around what you're already doing

What is Lumi?

Lumi is your always-on gym for SAT Math. Three pillars — Practice, Live Exam, Learn — that build real understanding, not memorized tricks. Train hard today. Test with confidence tomorrow.

Does Lumi replace my tutor or test prep center?

No — and it doesn't try to. If your class or tutor is working, keep going. Lumi makes that work stick: Practice on your own material, weekly Live Exams under real conditions, and honest feedback on where you're actually weak. If you're studying on your own, Learn gives you an expert-curated path from where you are to where you need to be.

Is it free?

Free to join. Free gives you 50 questions a day and 20 minutes of Live Mode — a short practice session, enough to see how Lumi works and whether it works for you. It isn't a full training plan.

Want a serious score boost? That takes real training. Lumi Learner is built for it: 200 questions a day, 20 hours of Live Mode a month, and the full Learn curriculum. A fraction of what a tutor or prep center costs — and worth every minute you put in.

How is this different from just using ChatGPT?

General AI will give you the answer. Lumi is built to make you able to get the answer. It tracks every question you've attempted, knows which of the 20 College Board skills you're shaky on, and adapts. It also won't hand you the solution when struggling is the point.

Can I use my own practice material?

Yes. Upload your homework, your prep book pages, your test center worksheets — Practice works through them with you.

What is Live Exam?

A weekly timed exam, taken at the same time as everyone else. Real pressure, real pacing, real scores. Practice builds skill; Live Exam builds the nerve to use it.

Do I get a predicted SAT score?

Yes — updated daily as you practice, with an honest uncertainty range. No inflated numbers.

What do I need to use it?

A browser, or a tablet if you want handwriting on Smart Canvas. Nothing to install.

Is Lumi only for SAT Math?

That's where we start, and we intend to be the best in the world at it.