Plans and prices

Free

• The 49-question diagnostic with a skill map
• A 10-question practice sampler with explanations and coach hints
• 4 full chapters: the test at a glance, Words in Context, the Math toolkit and Linear Equations in One Variable
• A public guide for each of the 30 skills
• 68 video lessons
• Format, scoring, typed-answer, study-plan and test-day guides
• A free account saves your work and adds 10 AI coach requests

Monthly study plan: $19.99 per month (planned price)

Every chapter, all 615 questions, both timed practice tests, the mistake log and 300 AI coach requests per billing month. Renews monthly until canceled.

Three-month study pass: $49.99 for three months (planned price)

Everything in the monthly plan for three calendar months, with 300 AI coach requests each month. One payment; no automatic renewal.

100 extra coach requests: $5.00 (planned price)

Add 100 AI coach requests. Purchased requests do not expire. This pack does not unlock the full workspace.

Checkout status

Paid plans open soon. The planned prices are $19.99 a month or $49.99 for three months, each with 300 AI coach requests a month, and $5.00 for 100 extra requests. Everything listed as free stays free.

Independence

Skill by Skill Prep is an independent study website and book. SAT® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this website or book. Bluebook™ is a trademark of the College Board. Desmos is a trademark of Desmos Studio PBC. Practice results and ranges are study estimates, not official scores or admission predictions.