You don't need to be a math genius to score 750+. You just need to know how to use the tool they already gave you.
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The problem with test prep
The "Algebraic Wall"
is optional.
We've all been there: you look at a problem, your mind goes blank on the formula, and you get stuck. While other prep tools try to teach you the "proper" textbook steps you've been struggling with for years, we show you the strategic shortcut.
The Digital SAT builds Desmos directly into the testing interface. Most students use it as a basic calculator. The top 1% use it to bypass algebra entirely.
Can't solve the equation? Plot both sides and find where they intersect. The answer appears visually — no algebra required.
Don't know the constant? Add a slider and drag it until the graph matches the constraint. Desmos tells you the answer.
Confused by data tables? Enter the points and let Desmos fit the curve. A difficult calculation becomes a simple data-entry task.
Why GraphPrep works
GraphPrep doesn't just give you the answer — it gives you the exact Desmos setup to win. Every time.
Turn a two-minute algebraic nightmare into a ten-second visual check. Same score. A fraction of the effort. No risk of an arithmetic error midway through.
See the solution literally appear on the screen. For students who struggle with abstract algebra, graphs and sliders make the answer obvious — not theoretical.
Plug each multiple-choice option directly into Desmos and check which one satisfies the equation. A concrete safety net you can rely on during the actual test.
How it works
Not a wall of text. The exact lines to type into your calculator — and why they work.
Type, paste, or photograph any SAT/ACT math question. GraphPrep reads it instantly.
See the exact setup to enter into Desmos — not an algebra lecture, but a step-by-step tooling guide.
Every solution includes a Pro-Tip that explains why the setup works, so you can do it yourself on test day.
Built for students who hate showing their work
If traditional math feels like a black box, it's time to switch to a technical advantage. By mastering the tooling instead of the formulas, you level the playing field.
You aren't cheating — you're using the official, built-in calculator more effectively than the person sitting next to you. That's not a shortcut. That's strategy.
GraphPrep is the only prep tool built specifically around Desmos — framing it not as a calculator, but as the strategic manual for the Digital SAT.
Feature breakdown
When a problem has an unknown constant like a or k, GraphPrep automatically sets it up as a Desmos slider. Drag it until the constraint is satisfied — no algebra needed.
GraphPrep populates Desmos with the exact expressions, sliders, and regressions — and walks you through each step with narrated explanations.
Enter the expressions yourself, step by step, with hints when you need them. Builds the muscle memory to execute the strategy independently on test day.
For data-heavy problems, GraphPrep suggests the exact regression syntax to enter. Turns a difficult multi-step calculation into a simple data-entry task.
Pricing
No credit card to start. Upgrade when you want 300 problems a month and full history tracking.
Free
forever
Try it before your next practice test — no strings attached.
Pro
/ month · cancel anytime
For students serious about their score. ~10 problems a day.
Privacy at a glance
Your uploads are used only to generate your solutions and improve our AI logic. No selling to third parties. No hidden tracking. No surprises. Just better scores.