Free practice is the start. Analysis shows what to fix.
Khan Academy provides free, official Digital SAT practice. PrepScore adds what comes after the score: domain-level diagnosis, Module 2 route signals, and a study plan tied to your target.
This isn't "free vs paid." It's "score vs analysis."
Khan Academy is the best free SAT resource there is, and you should use it. PrepScore isn't here to replace it — it's here to add the layer free practice tends to skip: what to fix, and proof you're fixing it.
Free, official, trustworthy.
Built with College Board, with skill practice, short videos and full-length tests in Bluebook. As a free foundation it's hard to beat, and nothing here says otherwise.
Lighter on "what to do next."
Free practice mostly hands back a score and a list of skills. It's thinner on per-question reasoning, weak-domain targeting, and the adaptive signal of which Module 2 you reached.
The analysis, in one place.
A four-part explanation on every question, full-length adaptive mocks that show your route, a practice estimate toward your target, and a mistake bank — without bouncing between two apps.
PrepScore vs Khan Academy
A fair read — some rows favor Khan, some favor PrepScore. Pick by what you need right now.
| What matters | Khan Academy | PrepScore |
|---|---|---|
| Cost | Free | Daily-free start, then from $9.90/mo |
| Official College Board partner | Yes | Independent |
| Full-length practice tests | Yes (in Bluebook) | Adaptive mocks, unlimited on Pro |
| Shows which Module 2 you reached | No | Yes |
| Per-question explanation | Lighter | Four-part on every question |
| Practice estimate toward a target | No | Yes — shown as a range |
| Mistake bank (auto-collect + redo) | No | Yes |
| Where you work | Khan + Bluebook | One app |
From "here's your score" to "here's what to fix."
The thing free practice rarely gives you is direction. PrepScore reads your practice and your mocks into one estimate toward your target, names the single highest-leverage domain to work next, and shows whether you reached the harder or easier Module 2 — the adaptive signal that sets your ceiling. Then every miss waits in your mistake bank until you redo it correctly.
- A four-part explanation on every question — the answer, the traps, the skill
- Full-length adaptive mocks that surface your Module 2 route
- A practice estimate (a range) toward the target you set
- A mistake bank that auto-collects and re-tests your misses
Khan Academy is enough when…
- You're just starting and want a free, official foundation.
- You mainly need skill practice and worked-example videos.
- Budget is the deciding factor — it's completely free.
Add PrepScore when…
- You want to know which domain is actually costing you points.
- You want adaptive mocks that show your Module 2 route.
- You want a practice estimate tracked toward a target score.
- You want every miss collected and re-tested until it sticks.
PrepScore vs Khan Academy
Is Khan Academy good for SAT prep?
How is PrepScore different from Khan Academy?
Should I use Khan Academy or PrepScore?
Is PrepScore free like Khan Academy?
Keep the free foundation. Add the analysis.
Start free — see your weak domains and a practice estimate toward your target, no credit card.