Prepvora is a high-performance adaptive test preparation platform for the Digital SAT and ACT. It uses real multistage adaptive testing (MST), matching official exam formats, and features an AI-powered Entity Swap Engine, 8-domain analytics, AI tutoring, and Desmos calculator integration.

Does Prepvora support the ACT?

Yes! Prepvora now includes full ACT practice sessions with English, Math, Reading, and Science sections. Our scoring engine provides a real-time scaled score from 1–36, matching the official ACT scoring curriculum.

How much does Prepvora cost?

Prepvora offers plans starting from a Free tier up to $50/month for Elite access. All paid plans include a 7-day free trial on the SAT and ACT adaptive engines.

Is Prepvora's adaptive testing like the real Digital SAT?

Yes. Prepvora matches the multistage adaptive routing (MST) of the official Bluebook exams, ensuring students face the same pressure and difficulty curves as test day.

What is the Entity Swap Engine?

The Entity Swap Engine™ is our proprietary AI that generates infinite question variants from core concepts, preventing question memorization and ensuring students master the underlying logic.

Does Prepvora have a free plan?

Yes, we offer a free plan that includes 1 full adaptive test per month and 50 practice questions. No credit card required.

SAT Reading & Writing Domain · ~26% of R&W

SAT Standard English Conventions

Pure grammar — the most gameable domain on the SAT.

Standard English Conventions is pure grammar: punctuation, subject-verb agreement, pronouns, modifiers, and sentence structure. This is the most rule-based domain on the entire test. Once you know the rules, you stop losing points here.

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What this domain covers

Subject-verb agreement
Pronoun agreement and clarity
Punctuation (commas, colons, semicolons, dashes)
Sentence boundaries and fragments
Modifier placement
Verb tense and aspect

Strategy that actually works

1Colons and dashes are interchangeable when introducing a list or explanation — never agonize between them.
2For subject-verb agreement, cross out any prepositional phrases before comparing subject to verb.
3A complete sentence on each side of a semicolon — always. If either side is a fragment, eliminate.
4Modifier placement: the noun immediately after the modifier must be what the modifier describes.

Frequently asked

Can I study my way from 0 to perfect in Standard English Conventions?+

Yes. Unlike reading skills, grammar is finite. About 30 rules cover every SAT question — memorize them and you never miss one.

Are commas or semicolons more common on the test?+

Comma questions vastly outnumber semicolon questions. But when a semicolon appears, you can almost always solve it by checking sentence completeness on both sides.

What is the most common grammar trap?+

Subject-verb agreement with interrupting prepositional phrases. "The box of apples (is/are) on the table." The subject is "box," not "apples."

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Explore Prepvora

Platform Features

Adaptive testing, AI tutor, Entity Swap Engine, and more.

How It Works

Real MST routing that mirrors the official Bluebook exam.

Pricing Plans

Free forever. Upgrade for more tests, AI queries, and analytics.

Prepvora vs Others

See how we compare to Khan Academy, Magoosh, and Princeton Review.