Help your student
ace SAT vocabulary.
A free app that actually works — adaptive flashcards that drill the words your student doesn't know, and skip the ones they do.
Completely free. No trial. No catch. No credit card.
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for parents
SAT vocabulary is one of the most coachable parts of the test — but only if students practice consistently. Most don't, because most apps make it feel like homework.
PrimePrep keeps sessions to 10 minutes and uses spaced repetition — the same technique top students use — so your student actually retains what they study. And it's completely free.
how it works
flip to learn
Your student sees a word, thinks about the meaning, then taps to reveal the definition and an example sentence. They rate their confidence — that's it.
the app remembers what they miss
Hard words come back the next day. Easy ones return in two weeks. No wasted time on words they already know.
quiz mode builds real recall
Once they're ready, quiz mode asks them to type the definition — the same kind of active recall the actual SAT demands.
try a card
tap the card above to see how it works
what's included — free
1,000+ high-frequency SAT words
Curated across 3 difficulty tiers — from common to advanced.
Word roots & etymology
Every word broken down by root, prefix, and origin — learn one root, unlock dozens of words.
Related words for each root
See other words that share the same root so you learn patterns, not just definitions.
Spaced repetition engine
Schedules each word at the right interval so nothing falls through the cracks.
Flashcard + quiz modes
Start with flashcards, graduate to typed recall as confidence grows.
Progress tracking
Streak, accuracy, and mastered word count — updated every session.
SAT is just
the beginning.
PrimePrep's math fluency platform — 18 levels, counting to calculus, ages 3–18 — is built and launching summer 2026. Get on the list to be first in.
1,000+ words · roots & etymology · flashcard & quiz modes
Reading · writing · grammar · SAT math section
Built & ready — 18 levels, counting to calculus, ages 3–18
one platform · one login · every stage of learning
Math Fluency — what's coming
AI placement, mastery-based progression, instant parent reports. Built and ready — launching summer 2026.
Your student's SAT is coming.
Start today — it's free.
No credit card. No trial. No catch.
Just 10 minutes a day and a smarter way to study.