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Preptics
NewThree full-length adaptive mocks are live

Know your score. Then follow the plan that raises it.

Adaptive full-length Digital SAT mocks, interactive simulations, and a daily plan that tells you exactly what to study next.

Free during the betaNo card required

Bluebook administers a test. Khan Academy teaches a course. Neither one tells you what to do tomorrow morning.

Mock examsAvailable now

The real thing, on a real clock.

Two modules per section, and the second one changes based on how you did on the first — the same adaptive structure as the Digital SAT.

  • Server-held timer
  • Module-locked
  • Real 10-minute break
Learn more about mock exams
A full mock is built like test day: four modules, 98 questions, 134 minutes. How you do in module 1 picks your module 2, and the clock is kept on our server, so closing the tab does not stop it.
Score analysisAvailable now

A score you can actually trust.

A range with its confidence stated, plus exactly which of the 30 SAT skills cost you the points.

  • Score band, not a guess
  • Per-skill loss
  • Pacing breakdown
Learn more about score analysis
Your score is a range and how sure we are of it, and it narrows with every mock you sit. Under it, the skills that cost you questions, and nine chapters that each answer one question.
Interactive drillsAvailable now

Drag it. Don't just read it.

Eight draggable simulations turn the abstract parts of SAT Math into something you can move and see. This one is live — try it.

  • 8 simulations
  • Answer to unlock
  • Weakness-ordered drills
Learn more about interactive drills
Slope is a rate

Graph of y = 1.5x + 2. A right triangle on the line has a run of 1 and a rise of 1.5 — that rise IS the slope. The line crosses the y-axis at 2; its x-intercept is -4/3.

The triangle is always one step wide, so its height is exactly m — that is what the slope measures: how far y moves for one step of x. Drag b and watch the line slide without ever getting steeper.

Parameters

1.5
2

Reading it off

Equation
y = 1.5x + 2
Rise per 1 across
1.5
y-intercept
(0, 2)
x-intercept
-4/3

Curves

Key points

Tap a curve to read a point off it.

Domain

Table

xyRemove

Live — drag the sliders. The same widget students get inside a lesson.

Streaks & rankingAvailable now

A reason to come back tomorrow.

Daily missions, a streak worth keeping, and your percentile against everyone else sitting this test date.

  • Daily missions
  • Global percentile
  • Opt out any time
Learn more about streaks & ranking
Show up and keep the streak; a rest day covers a missed one. A mock sat clean, under a real clock with no help, counts. Six tiers, a fresh start each season, and students under 18 are off the public board.

Three steps, then repeat.

1

Sit a baseline mock

One full-length adaptive exam, properly timed, so your starting number is real.

2

Get a plan built from it

Every mistake is scored by skill and by time, then turned into a daily plan sized to the hours you actually have.

3

Drill the weak spots

Short lessons and simulations on exactly the skills costing you points — reordered every time you sit another mock.

Why you can trust what you see

Questions written by AI, checked automatically and reviewed by people, every calculation explained, and every company that handles your data named. We would rather show you exactly how than have you wonder.

We tell you how confident we are in your score

A practice score is an estimate, and anyone who reports it to the nearest point is guessing. We give you a range and the confidence behind it, and it narrows as you sit more mocks. The method is written down and public.

Checked by machines, then reviewed by people

Questions are solved blind by three AI models that never see the answer key, and their arithmetic is run as code rather than trusted. Then a person reviews the question and its key: our content auditor, an admission-test instructor, has reviewed every question in the published practice tests. Reviewers can miss things too, so every question keeps a report button.

Original questions and original passages

Every question here is written for Preptics. We do not reproduce real SAT questions or passages — they are the College Board's copyrighted work, and a practice test built from them teaches you the wrong thing anyway. Our reading passages are built from public-domain and openly licensed sources, and we record where each one came from.

Found a bad question? It comes down in minutes

Every question has a report button. Once a question crosses a report threshold it is pulled from circulation automatically, and affected scores are recalculated so no one is penalised.

Our software does the maths. AI only writes.

Scores, skill estimates, review timing and your plan are calculated by code — and every calculation is written down, with its thresholds. AI drafts wording from numbers we already worked out, never inside a timed test, and only through providers that keep nothing.

Every company that touches your data, named

Not "trusted partners": each service, what it receives, and a link to its own policy. No ad networks, no tracking pixels, no analytics cookies.

What people say

Where a score is shown it comes from an exam actually sat here. We cannot type it in on anyone’s behalf.

No reviews to show yet.

We are new, and we would rather show you nothing than show you something we wrote ourselves. Sit a free mock, and if it helps, tell people — your score range is attached automatically from the exam you actually sat.

Sit a free mock

Free while Preptics is in beta.

Every mock, lesson and drill is unlocked for every account. The Founder's Pass is for anyone who wants to back it — pay what you want, and entirely optional.

Beta
$0

everything, while Preptics is in beta

  • Every full-length adaptive mock as it is released
  • Every lesson and every drill
  • Score bands, pacing, routing and skill-by-skill analysis
  • The study planner and daily missions
  • Global leaderboard placement
Start free
Optional
Founder's Pass
From $1

pay what you want · $5 suggested · one payment

  • A numbered Early Supporter Certificate
  • You choose the amount, and $1 is enough
  • One payment that never renews
  • Changes nothing about your access
Back Preptics
At launch
$9.99

3 months · or $24.99 for 12 months

  • Two adaptive mocks stay free, with every explanation
  • A pass opens every mock, lesson and drill
  • One payment, never auto-renews
  • We will email you before the beta ends

Not on sale during the beta

Preptics is a platform for standardised test preparation, and the Digital SAT is its first track. Need a different exam? Request a track — requests genuinely drive what we build next.

Common questions

Is the adaptive format up to date with the real Digital SAT?

Yes — the mock structure matches how the College Board actually runs the test today: two 32-minute Reading and Writing modules and two 35-minute Math modules, with the second module in each section routed by how you did on the first. If the College Board changes the format, we update the engine rather than leave you practising against a test that no longer exists.

Is everything really free during the beta?

Yes. While Preptics is in beta every account gets every mock, lesson and drill, with no card and no trial clock. Nothing is on sale except the Founder's Pass, which is optional and unlocks nothing extra. When the beta ends the passes go on sale at the launch prices on the pricing page; we will email you before that happens, and your scores, plan and history stay yours either way.

How does the score and skill analysis work?

Every mock is scored against your actual answers, correctness and time spent, rolled up by SAT skill rather than just by section. You get a skill-by-skill breakdown of exactly where points are being lost, a score band with a stated confidence instead of a fake-precise number, and an estimate of how well you know each skill, shown as a range. Your study plan rearranges itself from those estimates after every set of drills, lesson and mock. Every calculation is explained, with its thresholds, on the How Preptics works page.

Khan Academy and Bluebook are free. Why would I pay anything?

You should use both — they are good, and Bluebook is the real thing. What they do not do is tell you what to study today, track your proficiency skill by skill, or show you how you rank against everyone else preparing. Bluebook administers a test; Khan Academy teaches a course. Preptics is the daily routine between them. During the beta all of it is free. After launch two mocks stay free, and if the rest is not worth $9.99 to you, we would rather you used those than felt misled.

All questions

Find out where you actually stand.

One full-length timed exam, free, with the complete breakdown. About an hour — and the most useful hour of prep you will do this week.

Start your free exam