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Cognify offers smart adaptive practice, score prediction, and rubric-graded FRQs for Digital SAT and AP exams. Khan Academy is a free learning platform with different strengths. Read the full comparison below.
Khan Academy is the official College Board SAT practice partner with free content for SAT and AP courses. Their SAT prep content uses real College Board questions. Cognify generates unlimited adaptive practice tests calibrated to the same College Board blueprints, with rubric-graded FRQs, score prediction, and spaced repetition that Khan Academy does not offer. Khan Academy is breadth-first across all of education. Cognify is depth-first on SAT and AP exam performance. If you want free video lectures and guided practice, Khan Academy is excellent. If you want scored practice tests with AI feedback, difficulty adaptation, and exam-day prediction, Cognify fills the gap Khan Academy leaves. Both are free to start. Cognify Pro adds unlimited tests at $19.99/mo.
Last updated May 2026. Cognify is not affiliated with Khan Academy. All trademarks are property of their respective owners.
| Feature | Cognify | Khan Academy |
|---|---|---|
| SAT practice | ||
| AP Psychology | ||
| AP Biology | ||
| AP Statistics | ||
| Adaptive difficulty | Per-question adaptation | Fixed difficulty levels |
| Score prediction | ||
| Rubric-graded FRQs | ||
| Spaced repetition | ||
| Unit-level mastery tracking | partial | |
| Video lectures | ||
| College Board partnership | ||
| Practice test format | Full-length timed simulations | Guided practice sets |
| Cost | Free (5 tests/course) / $19.99 Pro | Free |
Yes. Khan Academy is completely free and is the official College Board SAT practice partner. They use real College Board SAT questions. Cognify also offers a free plan with 5 tests per course, with Pro at $19.99/mo for unlimited.
Khan Academy offers course content and practice exercises for AP courses, but not full-length timed practice exams with score prediction. Cognify generates full-length AP practice tests with rubric-graded FRQs and predicted AP scores.
Yes. They complement each other well. Use Khan Academy for concept learning through videos and guided practice. Then use Cognify for full-length practice tests, score prediction, and identifying weak areas through adaptive difficulty.
Cognify analyzes your performance across all practice tests, question types, and difficulty levels to predict your SAT score range or AP exam score (1-5). The prediction updates after every test and shows confidence intervals.