The questions
never run out.
Official SAT practice is excellent and finite — four tests, and then you're re-taking questions you half-remember. KhaSAT writes a new section every time you sit one, to the same blueprint the real test is built from.
A full timed section every week and two skill drills a day, free. No card to start.
A real question from the bank. Tap ⊘ to cross a choice out.
Built to the published section blueprint:
A full section, shaped like the real one.
Two 32-minute modules of 27 questions. How you do on the first decides how hard the second is — which is what makes the score mean something.
Module one routes you
Twenty-seven questions spanning every domain, at a mixed difficulty. Nothing is revealed between modules — the real test tells you nothing either, and knowing would only change how you play the second half.
Module two answers back
Do well and you get the harder form, where the higher scores live. The adaptive weighting is real: the easier form tops out around 600, and that ceiling falls out of the arithmetic rather than being clamped.
Then the whole thing, explained
Every question you answered, right or wrong, with the reasoning and why each distractor was tempting. Plus pacing — where you burned time, and which skills you're slow on rather than merely wrong on.
Four things most SAT apps get wrong.
- The questions are written harder than the real test, on purpose. KhaSAT "easy" is about a real medium. Test day should feel like a relief, not a surprise.
- You can move around inside a module. Forward, back, or straight to a block — and the navigator is grouped by domain, so "grammar first, reading last" is a strategy you can actually rehearse instead of hunting for question 16.
- Cross out answers like you would in Bluebook. The buttons sit next to every choice, visible from the start. No mode to discover.
- Pacing is a first-class metric. 71 seconds a question is the budget. You get a live behind-pace warning, a per-question verdict in review, and median seconds by skill.
All four domains. All eleven skills.
Every domain appears in the proportion College Board publishes, and each skill can be drilled on its own when a section shows you where the hole is.
Information and Ideas
14 questionsCentral Ideas · Textual Evidence · Quantitative Evidence · Inferences
Craft and Structure
15 questionsWords in Context · Text Structure & Purpose · Cross-Text Connections
Standard English Conventions
14 questionsBoundaries · Form, Structure and Sense
Expression of Ideas
11 questionsTransitions · Rhetorical Synthesis
Three of those carry 16 of the 54 questions between them — Words in Context, Boundaries and Transitions. They're rule-based and learnable, so they're pinned to the top of the drill menu.
The explanations are free. Always.
Capping the thing that teaches you would remove the evidence the app is worth paying for. What a paid tier would sell is volume, not insight.
Free
$0
- One full timed section a week
- Two skill drills a day
- An explanation on every question
- The complete score report
- Follow-up questions on an explanation
- Pacing analytics and score trend
Premium
TBD
- Unlimited sections and drills
- Everything in Free
- Ask a follow-up on any explanation
- Pacing analytics and score trend
- Up to five student profiles
Pricing isn't settled and the payment flow isn't built yet, so there's nothing to buy — saying so seemed better than a button that can't take money.
What KhaSAT isn't.
Every prep app claims a score bump. Here is what this one can and can't honestly tell you.
The score is an estimate, and it runs low
College Board publishes neither the routing threshold nor the raw-to-scaled conversion, and it changes between forms. KhaSAT's scale is a defensible model, not the official table — and because the questions are deliberately harder, treat the number as a floor rather than a prediction.
It's Reading and Writing only
No Math section, so no 400–1600 total. Building half a test properly seemed better than building all of it badly.
Not affiliated with College Board
SAT is a trademark of the College Board, which doesn't endorse and wasn't involved in this. Bluebook and Khan Academy are the official practice, they are free, and you should use them. KhaSAT is what you do once you've run out.
The questions are machine-written
Generated, then checked — a second independent solve on the grammar items, mechanical guards against the ambiguity traps we've caught before, and a flag button on every question. Some still get through. Flagging one is the fastest way to get it removed.
Sit one and see.
Sixty-four minutes, 54 questions, a real score report at the end. It's free, it works in the browser, and there's nothing to install.
Open KhaSATOn iOS via TestFlight, and on Android. Ask for a build →