★ Today’s mission~15 MIN
Tackle nonlinear math
Weak spots 2Linked 2New 1
Start mission → NEW · Built for the Digital SAT & ACT
Smarter Digital SAT & ACT prep.
Prepful is more than a SAT and ACT question bank or a traditional tutor. It helps you see where you stand, know exactly what to study next, and stay consistent every day.
- +147avg score lift, 8 wks
- 20Bluebook-style mocks
- 900SAT/ACT vocab words
Trusted by students at
- Stuyvesant
- BASIS Independent
- Phillips Andover
- Harker
- Lowell HS
- Thomas Jefferson HSST
- Shanghai American School
THE TODAY TAB
Daily SAT & ACT study planned in minutes
If you don't know where to start, Prepful turns your score goal, test date, and weak spots into a clear daily study plan, so you always know what to study next.
TUE · MAY 7
Hey Maya — 22 minutes today, then you're free.
🔥13day streak
Pax Daily plan
Word problems were 64% yesterday — close, not steady. I queued 6 warmups while your brain’s fresh, then a Reading sprint, then vocab so you can do it on the bus. You got this. 🔥
01MATH
Word problems · drill
02READINGNOW
Inference sprint
03VOCAB
Words in context · cards
WEEK AT A GLANCE
PROJECTED SCORE
1380→ 1500
A plan that rebuilds itself
Miss two questions on systems? Tomorrow opens with systems. Crush vocab three days in a row? It moves to maintenance, not your peak hours.
Same buddy, every device
iOS, Android, web — same plan, same streak, same Pax. Start a practice block on a Chromebook at lunch, finish it on your phone on the bus. Get the app →
MASTER ANY TOPIC · 3 STEPS
Master SAT and ACT topics
in three smarter steps
Instead of just watching a lesson and jumping into questions, Prepful helps you close the SAT and ACT prep loop: understand the topic with a worked-example Study Guide, remember it with spaced-repetition Flashcards, then prove mastery with an adaptive Practice Test.
01
Study guide
Tight, plain-English explanation with two worked examples. Every formula is highlighted. Stuck on a paragraph? Tap it and Pax rewrites it in plainer language.
02
Flashcards
Spaced repetition the way it should work. Cards you mark “Again” come back tomorrow; “Easy” cards rest for four days. Perfect for the bus.
03
Practice test
Now prove it. The set serves harder questions if you’re crushing them, easier if you’re shaky. Every wrong answer comes with the trap labeled and a high-five for showing up.
Same three steps for every topic in the path — 48 of them on the Digital SAT, 52 on the ACT. See all Digital SAT topics →
PAX STUDY BUDDY
Meet Pax, the study buddy who checks in
Pax is not a generic chatbot or traditional tutor. It’s your SAT and ACT study buddy — one that notices when you’re stuck, asks the right questions, explains the next step, and helps you understand what went wrong before you try again.
- Notices when you pause or repeat the same trap
- Asks a question before giving away the answer
- Explains the next step in plain English
MISTAKE BANK
Turn every mistake into your next practice set
Most prep apps let wrong answers disappear after you finish a set. Prepful saves every missed SAT and ACT question into your Mistake Bank, shows what you picked versus the correct answer, and lets you redo your mistakes in one click.
HOW IT WORKS
From "where do I start?"
to "I'm ready" — in four moves.
- 01
Diagnostic
22 adaptive questions, about five minutes. Digital SAT-style and ACT-style practice built around official test formats. You leave with a score band and a heat-map of weak spots.
~5 min · free - 02
Personal plan
Pax builds a day-by-day path from today to exam day. Hits weak areas hardest, leaves room for school, and respects your energy.
rebuilt nightly - 03
Smart practice
Read · drill · prove it. Every question explained in the voice of a friend who actually paid attention in class — with a high-five when you get one right.
Smart Drill · 8 Q/day - 04
Mock & exam day
20 full-length Bluebook-style mocks plus mini mocks for one section at a time. Score projection correlates within +/-30 points to recent Digital SAT outcomes 88% of the time. You walk in ready.
20 full mocks
WHAT'S INSIDE
Everything you need in one study app
Prepful covers the full Digital SAT and ACT prep journey: diagnose your score, plan each day, learn every topic, practice weak spots, review mistakes, take mocks, and get guidance from Pax when you're stuck.
Pax chat & snap help
Ask by text or snap a hard question with your camera. Pax gives hints, checks your thinking, and keeps the next step clear.
Today · just open and go
22 minutes queued, weak spots first, exam-day countdown front and center. No blank dashboard. No “pick a chapter.”
Path · SAT/ACT as a game map
Every topic in Algebra, Advanced Math, Reading, Writing — mastered / now / next / locked. Three steps each: Study Guide → Flashcards → Practice Test.
Smart Drill · AI finds your gaps
Stop random drills. Smart Drill chooses SAT and ACT questions from your weak spots — Polynomials, Inference, Subject-Verb — so each practice set has a clear reason to exist.
20 Bluebook-style mocks
Full and mini mocks built around official test formats. Score projection correlates within +/-30 points to recent Digital SAT outcomes 88% of the time. Train like the test without losing a Saturday.
Mistake Bank review
Missed questions stay organized by section, topic, and trap, so review starts from the exact pattern that cost you points.
Vocab sprint · 900 words
A daily pack with spaced repetition and usage checks. 8 words today is less scary than 900 in a textbook.
Score · projected by section
Watch your Digital SAT or ACT projection move in real time (Pro). Section-by-section, so you see exactly which module is still soft — and what 50 points away looks like.
RESULTS, NOT PROMISES
Measurable SAT & ACT score growth
- +147average Digital SAT lift in 8 weeks (n=2,184)
- +4.1average ACT composite lift over 10 weeks
- 92%finished their plan within ±3 days of target
Methodology measured across our last 2,184 users who took a Digital SAT within 7 days of their projection.
"I had three months and zero idea what to study. Pax just told me what to do every morning. I'd open the app, do my 25 minutes, close it, and somehow my score went from 1320 to 1490."
Maya R. · Senior, Brooklyn
1320 → 1490 · 11 weeks
GET THE APP
Get your Prepful study plan now
Get Prepful on iOS or Android to take your free diagnostic, follow today's mission, redo mistakes, and keep your SAT and ACT prep moving with Pax.
- Daily reminders — at the time of day you actually have 20 minutes free.
- Offline drill — practice questions work without signal.
- Streak that travels — your progress, plan and Pax are the same on every device.
- Widget — today’s plan on your home screen.
ASKED A LOT
Frequently asked questions
What is Prepful?
Prepful is a Digital SAT and ACT prep app that helps students know where they stand, what to study next, and how to stay consistent every day. It combines a free diagnostic, score projection, daily study plan, Smart Drills, Study Guides, Flashcards, Mistake Bank, vocab practice, Bluebook-style mocks, and Pax, your SAT and ACT study buddy.
Is Prepful good for Digital SAT prep?
Yes. Prepful is built around the Digital SAT format, including diagnostic scoring, daily study planning, topic practice, Smart Drills, Mistake Bank review, and Bluebook-style mocks.
Who is Pax?
Pax is not a generic chatbot or traditional tutor. It's your SAT and ACT study buddy — one that notices when you're stuck, asks the right questions, explains the next step, and helps you understand what went wrong before you try again.
How does Prepful work?
Prepful starts with a free diagnostic to understand your current level. Then it gives you a score projection, builds a daily SAT and ACT study plan around your test date and weak spots, and recommends Smart Drills, Study Guides, Flashcards, practice tests, and mocks to help you improve step by step.
Is Prepful free?
Yes. Prepful Free gives you a daily mission, the full SAT and ACT learning path for every topic, Study Guides, Flashcards, an 8-question Practice Test per topic, all 900 SAT/ACT vocab words, unlimited Pax chat, one daily 8-question Smart Drill, your last 30 days of mistakes, 1 Full Mock, and weekly score projection. Prepful Pro adds unlimited customizable Smart Drills, all 20 Full Mocks, snap-a-question with your camera, real-time section-by-section score projection, and a forever Mistake Bank. See full comparison →
Can Prepful help improve my SAT or ACT score?
Prepful is designed to help students improve their Digital SAT or ACT score by focusing on the skills that matter most. It uses your diagnostic, mistakes, weak spots, and test date to create a daily study plan, recommend targeted practice, and help you review missed questions before test day.
How does Prepful create my SAT or ACT study plan?
Prepful uses your score goal, test date, diagnostic results, practice history, and weak spots to plan what you should study next. Instead of asking random questions, Prepful turns your progress into a clear daily plan with targeted SAT and ACT practice.
Does Prepful include SAT and ACT practice tests?
Yes. Prepful includes SAT and ACT practice through Smart Drills, topic-based Practice Tests, mini mocks, full mocks, and timed practice. These tools help students build accuracy, pacing, and confidence before the Digital SAT or ACT.
How accurate is the score projection?
Across our last 2,184 users who took a Digital SAT, our 7-day-out projection was within +/-30 points 88% of the time. On Free you see one weekly projection; on Pro it updates in real time and breaks down by section so you know exactly which module to drill next.
How does the Prepful Mistake Bank work?
Most prep apps let wrong answers disappear after you finish a set. Prepful saves every missed SAT and ACT question into your Mistake Bank, shows what you picked versus the correct answer, and lets you redo your mistakes in one click.
Can I use Prepful on a Chromebook for the test?
Sure. Prepful works on Chromebooks, iOS, Android, and web. Most students do drills on the phone and mocks on a laptop.
Can I use Prepful if my test is only a few weeks away?
Yes. Prepful can help students with a few weeks, a few months, or a longer study timeline. It uses your test date and weak spots to prioritize the SAT or ACT practice that matters most, so you can focus on high-impact skills before test day.
READY?
Ace your SAT & ACT with Prepful.
No credit card. Cancel anytime.