For the digital SAT · Math and Reading & Writing · scored 400 to 1600
Graphite SAT reads every wrong answer, works out why you picked it, and builds tomorrow's practice around that mistake. Twenty to forty minutes a day, planned backward from your test date.
Not ready for an account? Check your score free: 20 questions, a score out of 1600 and the skills costing you points. No sign-up.
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The diagnostic finds where your points are. After that, every day has one short job, and the plan counts down to your test date.
Ten questions from every part of the test, six Math and four Reading and Writing. You also say how sure you were on each, so a lucky guess doesn't hide a weak spot.
Results are split into the eight skill areas the College Board reports, ranked by how many points each can still give you.
Each set aims at your weakest areas. Anything you miss comes back a few days later, until you get it right twice.
A full practice test shows what moved, and the plan shifts time toward whatever is still costing you points.
Everything is here, one tap away. Open only what you're curious about.
I picked C on number 12. Why is it wrong?
Tutorhint 1You set up 0.15x = 42, which finds 15% of the original price. The question gives the price after a 15% discount. What percent of the original price is left?
Student85%. So 0.85x = 42?
Tutorthat's itSolve it and compare with the choices. This is your third percent-change miss this week, so tomorrow's set has six more of these.
Coming soon. Open the tutor beside any question, lesson or Level up set, at lunch or the night before the test. It knows what you've missed this week, and it gives the help in three steps instead of handing over the answer.
A nudgePoints at the part of the question you skipped or misread.
The methodNames the approach, like setting up a percent-change equation, without doing it for you.
The full solutionEvery step, plus why each wrong choice was tempting. Always one tap away.
Topline, our graphing calculator
Type an equation, then tap where the graph crosses to read the answer off the screen. It opens beside every practice question, so you never switch tabs.
/ makes a fraction, ^ an exponent, sqrt a root. No menus.
Intercepts, the minimum or maximum and every intersection, with exact coordinates.
y₁ ~ mx₁ + b fits a line to a table and shows R².
What you practice here works in the calculator built into Bluebook.
Bluebook puts Desmos next to every Math question, and most students only use it to multiply. Our 14-lesson course teaches the moves that solve or check a third to half of the Math section, and when doing it by hand is faster.
(5x − 17)(4x − c) = ax² + bx + 119 for all x. What is c?
x_1=[2,3,4](5x_1-17)(4x_1-c)~ax_1^2+bx_1+119About 20 seconds in Desmos. By hand you'd expand and match coefficients: 17c = 119, so c = 7. The course teaches both, so you can check one with the other.
Start the Desmos course free Every lesson has you type the moves yourself.
Most SAT prep doesn't fail on the first day. It fails in week three, when practice slips and nobody notices. These are the things that keep it going.
One missed day a week is covered by a streak freeze, automatically. A streak should reward showing up, not punish a busy Tuesday.
Pick the time in Settings. You get at most one reminder a day, and none on a day you've already practiced.
The plan counts down to your test date and sizes each day to the time you said you have, so you never start by wondering what to do.
Study time, scores and what's next, by email every week, plus an alert if practice stops. Students can see exactly what parents see.
Exams, a trip, a busy season: pause the plan for 30 days and nothing is billed. Your history and plan are there when you come back.
Every account can try the full plan for 7 days. No card, and it goes back to the free plan by itself, so there's nothing to remember to cancel.
On Mechanical. Here is every condition, with nothing else in the fine print: you were on the plan for at least 6 weeks before your SAT, finished at least 80% of the sessions in your plan and at least 3 full practice tests, and took the SAT within 60 days of your last session. If your official score isn't higher than your first full Graphite practice test (or your last official SAT, if that's higher), email us your score report within 30 days of getting it. One refund per student. Full terms.
Graphite SAT's practice tests match the timing and routing of the digital SAT you'll take in Bluebook.
| Section | Modules | Questions | Time | Score range |
|---|---|---|---|---|
| Reading and Writing | 2 | 54 (27 + 27) | 64 min | 200–800 |
| Math | 2 | 44 (22 + 22) | 70 min | 200–800 |
| Total | 4 | 98 | 2 h 14 min | 400–1600 |
There are other good options, so here's a straight side-by-side, from their own websites and app listings.
| Feature | Graphite SAT | Crackd | Dolphin | Khan Academy |
|---|---|---|---|---|
| Price | Free plan, or everything for $8 a month ($6 a month billed yearly) | $29, $49 or $99 a month | Free phone apps; web plans $25 to $100 a month | Free; its tutor add-on is $4 a month |
| Free trial of the full plan | 7 days, no card | Not listed | Not listed | Free |
| Help on every question | Tutor with step-by-step hints, before the answer (coming soon) | Step-by-step tutor on the $49 plan | "Pip the Tutor" in the app | Khanmigo, $4 a month |
| Desmos course | 14 hands-on lessons, plus a calculator beside every question | Full Desmos course | Calculator tools in the app | Not listed |
| Practice questions | 1,500 (1,000 Math, 500 Reading and Writing), no repeats | 4,000+ | Not listed | Not listed |
| Full practice tests | Unlimited on Mechanical, 1 a month on the free plan | 5 on Plus, 11 on Pro | Not listed | Not listed |
| Lessons that make you answer | 86 active recall lessons with reviews after 1, 3 and 7 days | Video courses (85+ videos on Pro) | Lessons in the app | Lessons and quizzes |
| Games and rewards | Level up, speed-round leaderboards, streaks with a weekly freeze | Not listed | Streaks, leaderboards and a multiplayer game | Not listed |
| Parent dashboard | Yes, with weekly emails (Mechanical) | Not listed | Not listed | Not listed |
Checked October 2026. Prices and features change, so check each site before you decide. "Not listed" means we couldn't find it on their site, not that it doesn't exist. Sources: crackd.it, dolphin.study and its App Store listing, and PrepMaven's Khan Academy review. Crackd, Dolphin and Khan Academy are trademarks of their owners, who aren't affiliated with Graphite SAT.
Start free on Sharpened. Mechanical, with everything, can be tried free for a week, paused for 30 days, or canceled from your account page in two taps.
Try Graphite SAT before you pay.
$0/month
Free forever. No card needed.
Everything Graphite SAT has, in one plan.
$8/month
Billed monthly. Cancel anytime.
Everything in Sharpened, plus:
| Feature | Sharpened | Mechanical |
|---|---|---|
| Practice | ||
| 10-question diagnostic with your strong and weak areas | Included | Included |
| Full practice tests in the real test layout | 1 a month | Unlimited |
| Practice sets picked from your weakest skills | 3 a week | Unlimited |
| Level up: sets that get harder level by level | First 2 levels of each track | Every level |
| Review queue that brings back every miss | Included | Included |
| Hands-on lessons, including the Desmos course | 3 starter lessons | All |
| Built-in graphing calculator | Included | Included |
| Help when you're stuck | ||
| Tutor (coming soon) | 30 credits a month | Unlimited |
| Step-by-step written explanations | Diagnostic only | Included |
| In-depth video explanations (coming soon) | Not included | Included |
| Support | Help center | 24/7, priority |
| Planning and progress | ||
| Study plan built around your test date | Not included | Included |
| Score history and skill breakdown | Included | Included |
| Parent dashboard and weekly progress emails | Not included | Included |
| Study plan reviewed by a coach | Not included | Included |
| Test-week plan for pacing, sleep and logistics | Not included | Included |
| Monthly call with your parent | Not included | Included |
And more to come: new practice tests, question sets and tutor features are added as they're ready.
Prices in US dollars, shown per month. Yearly saves the most; weekly is there for a final push before test day. The tutor is coming soon. Family discounts and need-based pricing are available. Ask us.
Most SAT prep hands you a pile of questions and a score at the end. The score tells you how you did. It doesn't tell you why you picked C.
We built Graphite SAT around that question. Every wrong answer gets a reason, every reason turns into practice, and the practice keeps coming back until the mistake stops showing up. It's slower than skimming another thousand questions. It works better.
The Graphite SAT team
We don't promise a number of points, because gains depend on where you start and how much time you put in. We do promise that it goes up if you do the work: the score-up promise lists every condition. Your dashboard shows your practice scores after each test, so you can see what's working within the first three weeks.
Eight to twelve weeks before the test works well for most students. If your test is closer, Graphite SAT shortens the plan and puts more time on the domains with the most points available.
No. It starts with a hint, then the method, and shows the full solution only when you ask for it. Students who work through the hints remember the method on the next question.
Yes. On Mechanical, a parent gets a weekly email with practice time and practice test scores. Students can see exactly what parents see.
Any account can try Mechanical free for 7 days from the subscription page. There's no card, and it switches back to the free plan by itself. Mechanical can be paused for 30 days or canceled from the same page, in two taps; a canceled plan keeps working until the end of what you paid for.
Daily sets work on a phone, tablet, Chromebook or laptop. Take full practice tests on a laptop, Chromebook or tablet, since that's what you'll use in Bluebook on test day.
No. Graphite SAT is independent and isn't affiliated with the College Board. Our practice tests follow the published structure of the digital SAT. For official practice tests, use the College Board's Bluebook app alongside Graphite SAT.
We use it to run the tutor and build the study plan. We don't sell it, and we don't show ads. The privacy policy lists everything we collect.
Tell us a little about the student and we'll email a link to the diagnostic. A real person reads every note in the last box.