Master SAT Math,
one missed problem at a time.
Take a 15-minute diagnostic to see exactly which topics are costing you points — then drill them with a video explanation on every problem and full-length tests built to mirror the real SAT.
Every topic unlocked to try. No credit card needed.
Straight off the June 2026 SAT.
Found your YouTube videos a week before the June SAT. Watched the walkthroughs, practiced the same problems on Sigma Prep, and went from a 620 to a 730. The way you break down every problem is exactly what I needed.
Diagnose. Practice. Test.
The same loop a great tutor runs — find the gaps, close them, then prove it under real conditions. On your schedule, at your pace.
Find what’s costing you points
Take the free 15-minute Diagnostic Quiz. Get an instant score estimate and a map of every topic dragging your score down.
Take the Diagnostic Quiz →Drill it until it’s automatic
Work your weak topics with unlimited problems — each with a video showing the fastest method. Watch it, then prove it on a fresh problem.
Browse topics →Prove it on a full-length test
Sit a complete, full-length practice test built to mirror the real SAT. Watch your score climb toward your goal.
See practice tests →Real scores. Real students.
Many from students who found us on YouTube before the most recent June 2026 SAT. Every gain below is from a verified test taker.
“Found your YouTube videos a week before the June SAT. Watched the walkthroughs, practiced the same problems on Sigma Prep, and went from a 620 to a 730. Best SAT math content on YouTube.”
“I hit my dream score and locked it in before the end of junior year. Thank you Sigma Prep.”
“The videos taught me the fastest ways to use Desmos and break down each problem. This made everything easy.”
“I was able to just focus on the hard problems and the abundant practice helped it all click together. This helped me break through my plateau.”
“Every time I got a problem wrong there was a video to show me the best way to solve it. Being able to watch and retry another similar problem right away made improving effortless.”
“Having so many hard-level problems to grind through helped me lock down the problems I wasn’t getting consistently. That’s what got me from good to nearly perfect.”
“Found your YouTube videos a week before the June SAT. Watched the walkthroughs, practiced the same problems on Sigma Prep, and went from a 620 to a 730. Best SAT math content on YouTube.”
“I hit my dream score and locked it in before the end of junior year. Thank you Sigma Prep.”
Everything a great tutor does.
Hand-built by an instructor with a decade of SAT experience — the lessons, the practice, the score tracking — for the price of a streaming service.
A video on every problem
Never just an answer key. All 6,750+ problems come with a short video showing the fastest way to solve it — so you learn the method, not just the answer.
Built to mirror the real SAT
Every problem matches the real test's format, topic mix, and difficulty. Nothing on test day will feel unfamiliar.
Find your weak spots
AI watches every answer to pinpoint the exact topics holding your score back — and tells you precisely what to study next.
Three difficulty levels
Every topic is split into three levels, so you can build from the fundamentals all the way to the hardest questions on the test.
Full-length practice tests
Sit complete, full-length tests with an instant 200–800 score estimate and a full domain breakdown.
Practice on your schedule
No classes to miss. Phone, tablet, or laptop — at 2pm or 2am. Your progress saves automatically as you go.
A growing library of full-length tests.
Each one mirrors an official SAT practice test question-for-question — same format, same difficulty, brand-new numbers. The most honest way to know where your score actually stands.
New tests added regularly. Watch the matching official test broken down on our YouTube channel, then take Sigma’s version.
Less than a latte a day.
Tutors: $200/hr · Sigma: $0.82/day
Monthly
Billed monthly
$1.63/day
- All 2,000+ video explanations
- 6,750+ practice problems
- 5 timed practice tests
- AI-powered weak-spot tracking
- 50-point guarantee
- Cancel anytime
Annual
$299 billed annually
$0.82/day
- All 2,000+ video explanations
- 6,750+ practice problems
- 5 timed practice tests
- AI-powered weak-spot tracking
- 50-point guarantee
- Cancel anytime
Quarterly
$119 billed quarterly
$1.30/day
- All 2,000+ video explanations
- 6,750+ practice problems
- 5 timed practice tests
- AI-powered weak-spot tracking
- 50-point guarantee
- Cancel anytime
Free forever on a few topics. No card required.
Before you start
Less than a latte a day.
Tutors: $200/hr · Sigma: $0.82/day
$299 billed annually · $0.82/day
Free forever: 3 questions per topic + 1 full practice test. No card.