50-point score increase, guaranteed

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.

2,000+ videos6,750+ problems5 practice tests
2,000+
video explanations
6,750+
practice problems
+150 pts
avg improvement
Student Spotlight

Straight off the June 2026 SAT.

★★★★★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.

M
Myles S.
Junior · June 2026 SAT
620730+110
How it works

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.

1
Diagnose

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 →
2
Practice

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 →
3
Test

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 Students

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.

+110 PTS
620730

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.

M
Myles S.
Junior · June 2026 SAT
+200 PTS
540740

I hit my dream score and locked it in before the end of junior year. Thank you Sigma Prep.

S
Sydney T.
Junior · 5 months
+150 PTS
540690

The videos taught me the fastest ways to use Desmos and break down each problem. This made everything easy.

A
Alex B.
Junior · 3 months
+80 PTS
710790

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.

N
Nate C.
Junior · 2 months
+140 PTS
610750

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.

L
Lucas C.
Junior · 4 months
+140 PTS
640780

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.

P
Pete J.
Junior · 4 months
+110 PTS
620730

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.

M
Myles S.
Junior · June 2026 SAT
+200 PTS
540740

I hit my dream score and locked it in before the end of junior year. Thank you Sigma Prep.

S
Sydney T.
Junior · 5 months
What you get

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.

Practice Tests

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.

5 tests available
44 questions · ~70 minutes · instant score estimate
4
Practice Test 4
Free
5
Practice Test 5
Start →
6
Practice Test 6
Start →
7
Practice Test 7
Start →
8
Practice Test 8
Coming soon
9
Practice Test 9
Coming soon
10
Practice Test 10
Coming soon
11
Practice Test 11
Start →

New tests added regularly. Watch the matching official test broken down on our YouTube channel, then take Sigma’s version.

The Promise

Score goes up, or full refund.

At or below 600? Gain 50+ points or your money back. Above 600? Any improvement — or a full refund.

See full guarantee details →
+50
Pricing

Less than a latte a day.

Tutors: $200/hr · Sigma: $0.82/day

Monthly

$49/mo

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
Get Started
Best Value

Annual

$24.92/mo

$299 billed annually

$0.82/day

Save 49%
  • All 2,000+ video explanations
  • 6,750+ practice problems
  • 5 timed practice tests
  • AI-powered weak-spot tracking
  • 50-point guarantee
  • Cancel anytime
Start practicing →

Quarterly

$39.67/mo

$119 billed quarterly

$1.30/day

Save 19%
  • All 2,000+ video explanations
  • 6,750+ practice problems
  • 5 timed practice tests
  • AI-powered weak-spot tracking
  • 50-point guarantee
  • Cancel anytime
Get Started

Free forever on a few topics. No card required.

Questions

Before you start

A lot. You can browse every SAT Math topic and try 3 practice problems on each — and every one comes with the same video explanation our subscribers get, so you can see exactly how the method works. You also get one full-length practice test with an instant score estimate. No credit card, no sign-up wall to look around. A subscription unlocks unlimited problems on every topic and all of the full-length matching practice tests.

Each test mirrors an official SAT practice test question-for-question — same format, same topic distribution, same difficulty curve. But every problem is a brand-new variation with different numbers and contexts. You get a timed, two-module experience that feels like test day, and a video walkthrough for every question when you finish.

The entire curriculum was hand-built by an instructor with over a decade of SAT experience. Every problem was carefully selected to match what actually appears on the test. No filler, no unlikely edge cases. Each problem comes with a video showing the fastest way to solve it. Plus 5 full-length timed practice tests based on official SATs with video walkthroughs for every question.

Everything. All four SAT Math domains broken down into every subtopic: Algebra, Advanced Math, Problem-Solving and Data Analysis, and Geometry and Trigonometry. Each subtopic is split into three difficulty levels (Easy, Medium, Hard) with dedicated video lessons and practice problems.

No. Sigma Prep covers everything you need for SAT Math, including 5 timed practice tests based on official SAT exams with video walkthroughs for every question.

You can book a 1-on-1 tutoring session with an expert instructor for $80/hour. Tutors can walk you through any concept or problem type you're struggling with.

Yes. The platform is fully mobile-optimized so you can practice on the go. That said, for the best experience we recommend using a computer when possible — the Desmos calculator and video walkthroughs are easier on a bigger screen.

The Promise
Score goes up, or full refund.
At or below 600? +50 points or your money back. Above 600? Any improvement or refund.
Pricing

Less than a latte a day.

Tutors: $200/hr · Sigma: $0.82/day

Best Value · Save 49%
$24.92/mo

$299 billed annually · $0.82/day

Save 49%
All 2,000+ video explanations
6,750+ practice problems
5 timed practice tests
AI-powered weak-spot tracking
50-point guarantee
Cancel anytime
Start practicing →

Free forever: 3 questions per topic + 1 full practice test. No card.

Questions

Before you start

Start practicing free →