Step 1
Diagnose your real starting point
Take a short diagnostic. Sia returns a score range and maps your strengths and gaps across the Digital SAT skill domains.
AI SAT tutor · Mac & WindowsThe AI SAT tutor that tells you
The AI SAT tutor that tells you
exactly what to study today.
Set your target score and test date. Sia plans every day in between, with SAT practice tests and coaching on every mistake. Free on Mac and Windows.
Download freeMac & Windows · free, no credit card
Start for freeCreate a free account, no credit card
2M+ students1,920 questions matched to your gaps10 full-length practice testsFree tier, no credit card
Set your gap in 30 seconds
Live score forecast
Build your SAT prep path
Move the sliders. Sia forecasts the gain and maps the days.
Your score gap
Where you areWhere you're going
Sia forecast
+10 to +20
points projected in 1 week
based on 8 hrs / week to your test date
8 hrs / weekStudy commitment
1 full practice testBefore exam day
Re-plans dailyAdapts to your results
This is a projection based on typical gains at your starting band, not a promise. Sia rebuilds it from your real diagnostic after every session.
That gap is a stretch for this date. Consider the next SAT.
Download on Mac or Windows, or start in your browser. Your plan is ready in about three minutes.
Digital SAT quick factsKnow the test before you plan for it.
The Digital SAT is shorter, adaptive, and fully on-screen. Your plan should match the format you will actually sit.
Digital & adaptive
Format
2 hr 14 min
Testing time
98 scored
Questions
400–1600
Score range
64 min
Reading & Writing
70 min
Math
Format and timing follow the published College Board Digital SAT specification.
How the SAT agent works
From unknown starting point to a plan you can follow.
Three steps turn your current score, target, and test date into a plan that changes as you improve.
Step 2
Build backwards from your target
Choose your target score and test date. Sia forecasts a realistic gain, assigns every study day, and schedules the right number of mock tests.
Step 3
Practice, learn the trap, and re-plan
Work exam-format questions. Every miss produces coaching on the specific trap you chose, then tomorrow's plan changes around the result.
The loop runs after every session
- Sia measures which skills and distractor traps cost you points.
- Your live score forecast moves with the evidence.
- The next study block is rewritten around what changed.
- A realistic target and live score range, not false precision
- Per-distractor explanations for the answer you selected
- 1,920 AskSia-written questions and 10 full practice tests
Built around your score goal
A tutor, planner, and test center in one agent.
AskSia handles the whole prep loop instead of giving you another pile of questions.
SATAdaptive day-by-day plan
Today's SAT plan
1380→1560
Your score gap
2 / 37
Your test date
42 min
Focused study block
5
The loop runs after every session
Focused study block
1280–1320
Algebra foundations, then six inference questions selected from yesterday's mistakes.
Step 1Step 2Step 3
1 day
1
Algebra gap
2 days
2
Algebra gap
3 days
3
8 hrs/week
4 days
4
8 hrs/week
5 days
5
Plan updated
6 days
6
Plan updated
Adaptive day-by-day plan
Every day has a job, and the plan changes with you.
Sia plans backwards from your target score and exam date. Finish early, fall behind, or fix a skill and the next session changes automatically.
- A realistic target and live score range, not false precision
- Daily blocks for learning, drilling, review, and full mocks
- Automatic re-planning after every completed session
Per-mistake trap coachingPattern identified
The graph of a quadratic function crosses the x-axis at 1 and 5. For which values of x is f(x) = 0?
Bx = −4 only
Ax = 1 and x = 5
SWhy you picked B
You subtracted two days of growth instead of three. Here is the 20-second check that exposes the error.
Per-mistake trap coaching
It tells you why you got it wrong, not just the right letter.
When you miss, Sia names the specific wrong answer you chose and explains the trap: the misread, partial calculation, or plausible wrong step.
- Per-distractor explanations for the answer you selected
- Trap types modeled on the published Digital SAT design
- Follow-up practice that stops repeated mistakes
Section 2 · Math14:30Mark for review
Question 11 of 22
The graph of a quadratic function crosses the x-axis at 1 and 5. For which values of x is f(x) = 0?
Ax = 1 and x = 5
Bx = −4 only
Cx = 3 only
Exam-format fidelity
SAT practice tests built to the Digital SAT format.
Practice in a full-screen test interface with timing, mark-for-review, figures, and tables. Questions are selected for the skills where you are losing points.
- 1,920 AskSia-written questions and 10 full practice tests
- A Word Lab with spaced repetition from words you missed
- A live score estimate that updates after every session
SAT practice tests
Practice tests built around your mistakes.
AskSia writes questions to the published Digital SAT format, then selects the ones you personally need. Every result updates your forecast and the next block of days.
Personalized
The set is chosen for you
Your diagnostic maps 30 skills. Sia selects questions at your difficulty band in the skills where you are losing points.
Full-length
10 full-length practice tests
Two Reading and Writing modules and two Math modules, timed and module-adaptive like the Digital SAT.
By section
Practice Math or Reading and Writing alone
Drill a single section when that is the gap, or let Sia choose based on where points are leaking.
Free
Free SAT practice, no credit card
The free tier includes the diagnostic, your plan, exam-format questions, and per-mistake coaching.
1Sit a practice test→2Sia names your traps→3Your forecast moves→4Tomorrow's plan changes
Every AskSia question is written by AskSia to the published exam format. We do not reproduce or resell official SAT questions. SAT® is a registered trademark of the College Board, which is not affiliated with AskSia.
Why AskSia
Four things the big players do not do.
Web apps hand you a question dump. Human tutors cost thousands. Official prep has no coaching. AskSia is a different category.
An agent, not a chatbot
Sia diagnoses, sets a target, builds the plan, drills you, and re-plans around your weakest skills.
vs. type-a-question tools
Exam-format and personalized
Full-screen practice, figures, timing, mark-for-review, and a live score forecast selected for your gaps.
vs. flattened text dumps
Per-distractor coaching
Sia explains why the specific wrong answer looked right to you, not only which letter was correct.
vs. “the answer is C”
Free to start · $79 to finish
Prep on the free tier, then unlock the full bank and all practice tests for a one-time price.
vs. $80–200/hour tutors
Why it runs on your desktop
A browser tab cannot sit an exam with you.
The SAT is full-screen and timed. AskSia is built as a real app on your machine, with your notes and study history available.
Real test conditions
Full-screen exam mode with a timer and mark-for-review. Practice the way you will actually sit the test.
It reads your material
Add a practice test, screenshot, worksheet, or PDF. Sia finds patterns in your errors and folds them into the plan.
Works offline after launch
Your plan and question bank stay on the machine so you can drill in a library, class, or on a plane.
One click from your dock
Open today's session without finding a tab or deciding what to study. That is how students keep a streak.
Loved by 2M+ students
The agent students already study with.
Sia has supported coursework, lectures, and revision across more than 2,000 universities and high schools. SAT prep uses the same agent for one exam.
2M+
students
2,000+
universities and schools
4.8/5
student rating
★★★★★
“I stopped guessing what to revise. Every day opened with exactly the block I needed.”
MMaya R.
★★★★★
“It turned three-hour sessions into 45 focused minutes and showed me the mistakes I repeated.”
JJake M.
★★★★★
“The trap explanation was the first time a practice app felt like a real tutor.”
PPriya S.
★★★★★
“Seeing the forecast move kept me honest about whether I was actually on pace.”
AAlex T.
★★★★★
“I used the Math section alone for two weeks, then my full mocks finally moved.”
SSofia L.
★★★★★
“The plan adjusted when school got busy instead of making me feel permanently behind.”
DDaniel K.
Compare SAT prep
A complete plan, not another content library.
Compare the parts that determine whether practice turns into a score gain.
| Feature | AskSia | Official practice | Human tutor | Question bank |
|---|---|---|---|---|
| Typical price | Free / $79 once | Free | $80–200/hr | $30–149/mo |
| Adaptive daily plan | Yes | — | Sometimes | — |
| Questions selected for your gaps | Yes | — | Sometimes | Limited |
| Coaching on your chosen distractor | Yes | — | Sometimes | Rarely |
| Digital SAT-format practice | Yes | Yes | Varies | Varies |
| Live score forecast | Yes | Limited | — | Limited |
| Plans backwards from your date | Yes | — | Sometimes | — |
Competitor pricing and features are typical ranges as of July 2026 and vary by provider and plan.
SAT test dates
SAT test dates 2026 to 2027, and how many days you have left.
Every weekend Digital SAT date in the 2026–2027 testing year, with regular registration deadlines. Pick your date and Sia builds backwards from it.
| SAT test date | Regular registration deadline | Days from today | What a plan looks like |
|---|---|---|---|
| Sat, Aug 22, 2026 | Aug 7, 2026 | — | — |
| Sat, Sep 12, 2026 | Aug 28, 2026 | — | — |
| Sat, Oct 3, 2026 | Sep 18, 2026 | — | — |
| Sat, Nov 7, 2026 | Oct 23, 2026 | — | — |
| Sat, Dec 5, 2026 | Nov 20, 2026 | — | — |
| Sat, Mar 6, 2027 | Not yet published | — | — |
| Sat, May 1, 2027 | Not yet published | — | — |
| Sat, Jun 5, 2027 | Not yet published | — | — |
Dates are published by the College Board and can change. Confirm on the official College Board site before registering. Spring 2027 deadlines were not published at the time of writing.
Free SAT study guides
The AskSia SAT Bible. Free, no download.
Six deep guides cover the Digital SAT skill by skill with worked questions. Read them in the browser; the agent decides which ones you need.
Start hereThe Digital SAT BibleThe whole exam, mapped section by sectionRead free →MathSAT Math: Algebra & Advanced MathLinear equations, systems, quadratics, and exponentsRead free →MathSAT Math: Problem Solving & DataRatios, rates, percentages, and statisticsRead free →MathSAT Math: Geometry & TrigonometryLines, angles, circles, triangles, and radiansRead free →ReadingSAT Reading: Comprehension & InferenceCentral ideas, command of evidence, and inferencesRead free →WritingSAT Writing: Grammar & ExpressionBoundaries, form, structure, and senseRead free →
Reach your goal
Every day is planned
backwards from your target.
Sia starts from the score you need and the date you need it, then works backwards. If you fall behind, tomorrow changes. If a skill is fixed, it stops appearing.
- 1Set your target score and test date.
- 2Sia forecasts what the gap realistically takes and tells you when it is a stretch.
- 3Every session moves the forecast, so you always know whether you are on pace.
Simple pricing
Start free. Finish for $79.
One flat price for the complete Digital SAT plan. No subscription and no hourly meter.
Free
$0
Free forever · no credit card
- Diagnostic and score range
- Day-by-day adaptive plan
- Exam-format practice and trap coaching
- Live score forecast
- Full question bank and every mock
- Unlimited Word Lab and retakes
Most popular
Full SAT Prep
$79one-time
Everything in Free, plus:
- Complete 1,920-question bank
- All 10 full-length practice tests
- Goal-locked planning after every session
- Unlimited Word Lab and retake replays
- Priority coaching on every mistake
Less than one hour with a private tutor. One-time payment, no renewal.
Built responsibly
Who makes this, and how the numbers work.
SAT prep should improve learning without pretending to be official material or promising impossible gains.
Original AskSia questions
Questions follow the published format but do not reproduce official questions, past papers, or retired content.
Your study history stays protected
Your plan, files, and performance are handled under AskSia's privacy and security controls.
Forecasts show uncertainty
Sia uses score ranges and tells you when a target is a stretch instead of promising a guaranteed result.
No unsupported score claims
AskSia does not promise a specific score or publish invented gains. Forecasts update from your own work and remain projections, not guarantees.
Frequently asked questions
Questions, answered.
The next Digital SAT in the 2026–2027 testing year is Saturday, August 22, 2026. Dates can change, so confirm on the official College Board site before registering.
The Digital SAT has 2 hours and 14 minutes of scored testing time plus a 10-minute break. It contains 98 scored questions across Reading and Writing and Math.
Yes. The free tier includes a diagnostic, a day-by-day plan, exam-format practice questions, and coaching on every mistake.
Yes. AskSia is free to download on Mac and Windows with no credit card. The optional $79 one-time upgrade unlocks the complete bank and all 10 practice tests.
AskSia writes original questions to the published Digital SAT specification. It does not reproduce official questions and is not affiliated with or endorsed by the College Board.
Sia looks at the wrong answer you selected and explains why it seemed plausible, then gives practice that targets the same error pattern.
Official practice supplies authentic questions. AskSia adds an adaptive plan, live score forecasting, and coaching on the traps behind each mistake. Many students use both.
Yes. AskSia runs on macOS 12 or later, Apple silicon and Intel, plus Windows 10 and 11. Mobile apps are also available.
No. SAT prep is one study mode inside AskSia. The same app can also build study guides, diagrams, and step-by-step walkthroughs from your own materials.
Your target score is
a plan away.
Download free, take the diagnostic, and have a day-by-day plan to — in about 3 minutes.
Free on Mac & Windows · $79 one-time for the complete bank and all 10 practice tests
