Yes. The free plan includes 5 practice tests per course. Full access is $19.99/mo per course.

What exams does Cognify cover?

Cognify covers AP Psychology, Digital SAT, AP Biology, and AP Statistics with practice tests, rubric-graded FRQs, and score prediction.

How does Cognify compare to Khan Academy?

Cognify focuses on exam-format practice with AI grading and score prediction. Khan Academy provides broad video instruction. Cognify is purpose-built for AP and SAT exam day performance.

How does Cognify compare to UWorld and Princeton Review?

UWorld and Princeton Review rely on static question banks that students exhaust after a few sessions. Cognify generates fresh questions on demand against the official College Board exam blueprint, so every practice test is unique. FRQs are graded point-by-point against AP rubrics with specific feedback on what you earned and missed.

How accurate is the AP score prediction?

Cognify maps your percentage correct to the public AP composite scoring buckets (1-5) using historical score distributions. The prediction improves as you take more practice tests. For the Digital SAT, scores map to the 400-1600 scale using official section score conversion tables.

Does Cognify cover AP FRQ practice?

Yes. Cognify provides rubric-graded FRQ practice for AP Psychology, AP Biology, and AP Statistics. Each response is scored criterion by criterion against the official AP rubric with specific written feedback explaining what you earned, what you missed, and how to improve.

Standard English Conventions

Digital SAT — Reading and Writing

Overview

Grammar rules tested on the Digital SAT: subject-verb agreement, pronoun-antecedent agreement, verb tense, parallel structure, modifiers, punctuation.

Key Terms

subject-verb agreement
pronoun reference
parallel structure
comma splice
semicolon
dangling modifier

Exam Tips

Grammar rules are the most learnable section
Read the full sentence before choosing an answer

Common Mistakes to Avoid

Choosing answers that 'sound right' instead of applying rules
Missing comma splices

Frequently Asked Questions

What grammar rules are tested most on the SAT?

Subject-verb agreement, pronoun-antecedent agreement, verb tense consistency, comma usage, and parallel structure appear most frequently.

Ready to practice Standard English Conventions?

AI-generated questions with instant feedback. Free to start.

Start Practicing Free

Standard English Conventions

Digital SAT — Reading and Writing

Overview

Grammar rules tested on the Digital SAT: subject-verb agreement, pronoun-antecedent agreement, verb tense, parallel structure, modifiers, punctuation.

Key Terms

subject-verb agreement
pronoun reference
parallel structure
comma splice
semicolon
dangling modifier

Exam Tips

Grammar rules are the most learnable section
Read the full sentence before choosing an answer

Common Mistakes to Avoid

Choosing answers that 'sound right' instead of applying rules
Missing comma splices

Frequently Asked Questions

What grammar rules are tested most on the SAT?

Subject-verb agreement, pronoun-antecedent agreement, verb tense consistency, comma usage, and parallel structure appear most frequently.

Ready to practice Standard English Conventions?

AI-generated questions with instant feedback. Free to start.

Start Practicing Free

Standard English Conventions

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Standard English Conventions?

Related Reading and Writing Topics

Standard English Conventions

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Standard English Conventions?

Related Reading and Writing Topics