Content domains

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Your Progress page

Score estimate

A rough position on the 200–800 scale for each section, and their sum out of 1600. It is not a predicted test score, and nothing here is scaled against real test-takers.

It is mostly built from how often you answer correctly on the first try, with a smaller contribution from how far the questions you have met have climbed the review ladder. That second part is why the number keeps drifting up over weeks even on a day you answered nothing new — questions surviving their rest periods is itself evidence.

Then the whole thing is pulled back toward 500 in proportion to how little you have answered — four right answers is not evidence of an 800. After 120 questions in a section the estimate stops being damped and stands on its own.

Treat it as a direction, not a number. The College Board's own practice tests are the only thing that gives you a real one.

Mastery

How well you know the questions you have already seen.

Every question you have met sits on a ladder with five rungs. Get it right and it climbs one rung. Get it wrong and it drops all the way back to the bottom. Your mastery score is the average rung, written as a percent.

Questions you have never opened are not counted. This number is about the material you have actually studied — not the whole bank.

Accuracy

Out of every question you have ever answered, the percent you got right the first time.

This one remembers everything, including answers from months ago, so it moves slowly. That is on purpose — it is your honest record. The app does not use it to decide what to ask you.

Pictures

How many hidden pictures you have finished. Every right answer uncovers two squares of the one you are working on, and 50 right answers finishes it — that is when you find out what it was.

Wrong answers never take squares back. Uncovered stays uncovered.

Day streak

How many days in a row you have answered at least one question. Skip a whole day and it starts over at zero.

Rounds

How many sets of questions you have worked through. A round is ten questions, plus any extras added when you miss one.

How the questions work

Where did that question go?

Nowhere — it is resting. When you get a question right it steps away for a while, then comes back to check you still remember it. The more times in a row you have got it right, the longer it rests.

How long a question rests

This is the whole point of the app. Answering something correctly today proves very little. Answering it correctly again six weeks later proves you actually know it — which is the state you want to be in on test day.

Why does it say a skill needs work?

A skill shows up under Focus here next when you have been getting less than 75% of it right lately.

Lately means your last few answers, not your whole history. So a skill you were bad at when you started will come off the list once you start getting it right — the early misses stop counting against you.

Why do I get a second question after I miss one?

Because reading the explanation is not the same as being able to do it. When you miss one, the app finds a different question on the same idea and asks it right away, so you get to use what you just read.

It only does this once. Miss the follow-up and it moves on rather than grinding you down.

Does using a hint cost me anything?

No. A right answer counts as right whether or not you took the hint. The app will say “Correct — with a hint,” but nothing about your score changes.

Press H to get one.

Are these real SAT questions?

No. They are written to the same content domains and question types the digital SAT uses — the domain names on the Progress page are the College Board's own — but every question here is original. Nothing is copied from a real test.

Use this to build the skills. Use official practice tests, under time, to find out where you actually stand.

Can I practise when nothing is due?

Yes. When everything is resting, the home page offers Review ahead of schedule, which pulls tomorrow's questions forward. It works, but the spacing is what makes things stick, so coming back tomorrow is usually the better move.

Your work

Is my progress saved?

Yes — the line at the bottom of every page says exactly where.

Nothing is sent anywhere over the internet. It stays on this computer.

What does “Erase all progress” do?

Exactly what it says: every answer, every streak, every score, and every picture you have earned. It asks first, and it cannot be undone.

Policies

Last updated 29 July 2026. Written to describe what this app actually does, rather than to cover anybody. Where something is not yet true, it says so.

Terms of Use

What this is. A practice tool for the digital SAT. You get an account, questions chosen for you, and the reasoning after every answer. It is not affiliated with, endorsed by, or connected to the College Board, which owns the SAT trademark.

Your account is yours alone. Keep the password to yourself. You are responsible for what happens under your account, and the practice record it builds only means anything if one person is answering.

What you may do with the questions. Practise. The questions, explanations and the bank as a whole stay the property of whoever runs this app; you are not licensed to copy, republish, sell or feed them to anything else.

Ending it. You can delete your account at any moment, from the menu behind the silhouette. An account may be closed here for breaking the acceptable-use rules below. Either way the data goes; there is no archived copy kept for later.

No warranty. This is provided as it is. It does not promise a score, an outcome, uninterrupted service, or a bank free of mistakes. Where the law allows, liability is limited to what you paid — which is currently nothing.

Privacy Policy

What is collected. An email address, and your practice: which questions you have answered, whether each was right, how far each has climbed the review ladder, and which school you belong to if you joined one. Nothing else — no name, no age, no address, no phone number, no payment details. The app never asks for them.

Why. The email address identifies the account and is the only way to reset a password. The practice record is the product: without it there is no review schedule, no score estimate and no weak-spot list.

Who it is shared with. Nobody, in the sense that matters: it is not sold, rented or given to advertisers. There is no advertising, no tracking pixel and no third-party analytics in the page. Four suppliers touch part of it because running the app requires them, and each is named under Third-party services below.

Who can read it here. You. Nobody else sees it in detail — not another student, not a teacher. Staff at your school see the roster and how many questions each student got right this week, which is what a teacher needs to notice somebody who has stopped. They cannot see which questions you were asked, what you answered, or your score estimate.

How long. Until you delete it. There is no automatic expiry — a review schedule is only useful if it remembers what you answered months ago. There is not yet a retention limit for accounts never used again, and there should be.

Your control. Clear progress empties your practice and keeps the account. Delete account removes the account and everything attached to it — the address, every answer, your share of your school's picture — from every device, permanently and immediately. Both are behind the silhouette at the top right. There is no recovery after deletion.

If this app changes hands

If it is ever sold, merged or transferred, the accounts and practice records go with it — there is no version of the sale where the app moves and the data stays behind.

Two commitments about that, because "we may transfer your data in a business transaction" is the sentence people use to mean anything at all:

You will be told before it happens, by email to the address on your account, with enough notice to delete everything first if you would rather not come along.

Whoever buys it is bound by these policies as they stand on the day of the sale. If they want to collect more, share it more widely, or use it for something else, that is a change they have to ask you about — not something they inherit by buying the company.

Cookies and local storage

This app sets no cookies. Not for analytics, not for advertising, not for anything.

It does keep three things in your browser's local storage, which is cleared when you clear site data:

sat.session.v1 — the token that keeps you signed in.
sat.review.v1 — a copy of your practice, so a reload is instant instead of a wait. It also carries your streak, your progress through the hidden pictures, and whether you chose the paper or chalkboard look.
sat.studymode.v1 — whether you said you study with a school or on your own, so you are not asked twice.

All three are functional: without them you would be signed out on every reload and asked the same question repeatedly. None of them tracks you across other sites, because none of them leaves this one.

The anti-abuse widget on the sign-in page comes from the network provider described under Third-party services, and may set storage of its own to tell a person from a script. It is used instead of a CAPTCHA specifically because it does not profile you or make you label photographs.

Your data rights

See it. Everything the app holds about you is on your own Progress page — that is the same data, drawn.

Correct it. Practice history is a record of what happened and is not editable, but you can clear it. Get in touch if something is wrong rather than merely unwanted.

Delete it. Immediately, yourself, from the menu behind the silhouette. No form, no waiting period, no asking us.

Take it with you. Not yet built. If you want a copy of your practice in a file, ask and it will be sent to you; an automatic export is worth having and does not exist.

Depending on where you live — California and several other US states, among others — some of these are rights rather than courtesies. They are offered to everybody regardless, because working out which law covers which student is not a reason to treat them differently.

Content Policy

Every question is original. None is copied from a real SAT, and none is reproduced from College Board materials. The six domain names are the College Board's own, because a weak spot should name the same thing a real score report does.

About four hundred questions are written individually, each with its own explanation. The rest come from generated families: a template per skill producing many variants. For maths the answers are computed from the numbers in the question, so a question cannot disagree with its own answer, and the worked steps are built from those same numbers.

Mistakes. A bank this size will contain errors. Every hand-written numeric answer is re-derived independently by a separate tool before it ships, and every generated one is checked by a formula written separately from the generator — but that catches arithmetic, not ambiguity. If a question seems wrong, report it and it will be fixed or removed.

What the questions are not. They are practice, not a predictor. The score estimate is not a predicted test score and is not scaled against real test-takers; the app says so where it appears. Use official practice tests for a real number.

Acceptable Use Policy

This app is for one student practising. Specifically:

Do not share an account. The review schedule is built from one person's answers. Two people sharing an account get a schedule that fits neither.

Do not extract the question bank. Questions are served a round at a time and answers are never sent to the browser at all — the server grades and returns the reasoning. Accounts are limited in how many questions they may be shown in a day, and every question released is recorded against the account that received it. Scripting the app to harvest questions breaks this policy and is visible in the logs.

Do not create accounts you do not need. The daily limit starts small on a new account and grows with the number of days practised, precisely so that making more accounts gains nothing.

Accounts used this way may be closed.

Children's Privacy

This app is meant for students preparing for the SAT, normally taken at sixteen or seventeen.

Not yet in place: there is no age check. US law requires a parent's permission before collecting personal information — an email address counts — from a child under thirteen, and this app cannot currently tell how old somebody is. Most people signing up are well over that line, but "most" is not a control. If you are under thirteen, ask a parent before signing up.

Schools and Student Records

When a school joins, its students' practice records are school records and this app holds them on the school's behalf. US law (FERPA) allows that, but only under a written agreement saying what may be done with the data, forbidding anything else, and requiring deletion on request.

Not yet in place: that agreement. No school is contracted yet, so nothing turns on it today — but no school can be onboarded until it exists.

The technical side is already built the way such an agreement would require: data is per-account, staff access is limited to the roster and a weekly count, and deletion is complete rather than a flag.

Security

Passwords are stored hashed by the identity service and are never readable, including by whoever runs this app. Traffic is encrypted in transit.

Separation between students is enforced by the database, not by the app being careful: every table carries an account id and every rule is "this row belongs to whoever is asking". A bug in the app cannot hand one student another's history, because the database refuses before the app is consulted.

Answers to questions are never sent to the browser. The server chooses what to ask, grades what comes back, and releases the answer only once an attempt has been spent on it.

Third-party services

Four suppliers are involved in running this app. Each is described by what it does and where it holds data, so you can see the shape of who touches what.

The database and sign-in provider (United States) — stores the database and handles sign-in. This is where your email address and your practice actually live.

The hosting provider (United States) — serves the page itself: the HTML, styles and scripts. It never sees your practice, because that travels from the database provider straight to your browser.

The email provider (United States) — sends confirmation and password-reset messages. It receives an email address and the message being sent, and nothing else.

The network and anti-abuse provider (United States) — supplies the anti-abuse widget on the sign-in page and answers DNS for this domain. It does not receive your practice.

Each holds data under its own terms, and each is a company that could be breached independently of anything done here. That is the real cost of not running your own servers, and it is worth stating plainly rather than burying.

The suppliers are not named here, but they are not secret either: write to support@myprep.us and you will be told who they are. A school or district review will normally want that list, and it is provided on request.

Accessibility

This app aims to meet WCAG 2.2 Level AA, the standard US courts and the Department of Justice point to when they talk about the ADA. It deliberately does not claim to be "ADA compliant" — the ADA sets no technical bar for websites, so the phrase means nothing checkable. What follows is what has actually been done and tested.

Built in. Every form field has a real label. Text contrast is at least 4.5:1 and interface elements at least 3:1, in both the light and dark themes, checked by measuring the palette rather than by eye. Keyboard focus is always visible. There is a skip link to the main content, and the page uses proper landmarks and headings. Verdicts and status messages are announced to screen readers as they appear. Nothing is signalled by colour alone — a right or wrong answer is also stated in words. Animations respect your system's "reduce motion" setting.

Keyboard. Everything works without a mouse. During a round: 1–5 pick an answer, Enter checks it and then moves on, H shows the hint, and Esc asks whether to end the round.

Not yet tested. The checks above are measurements of the code. This app has not yet been driven end-to-end with a screen reader, at 200% zoom, or in Windows High Contrast Mode, and it has not been reviewed by anyone who uses assistive technology daily. Those are the tests that find what measurement misses, and they have not been done.

If something does not work for you, say so and it will be treated as a bug rather than a request. Tell us what you were doing and what tool you were using; that is usually enough to reproduce it.

Getting in touch

Questions about any of this, a request for a copy of your data, an accessibility problem, or a question that looks wrong — the same address reaches a person:

support@myprep.us

There is no support team and no ticketing system; it is a small operation and replies come when they come. Anything about a student's data or an accessibility barrier gets looked at first.

Changes to these policies

The date at the top of this section is when they last changed. Anything material — new data collected, a new party it is shared with, a retention limit — will change that date and be described here rather than quietly adjusted.

Status of these policies

These are not legal advice and have not been reviewed by a lawyer. They describe how the app behaves so a student, parent or teacher can see what they are agreeing to. The two "not yet in place" notes above are real gaps rather than formalities.

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