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ACT · SAT · GMAT · GRE · CFA

One calm system for the exam you're taking.

Pick your exam. Get a guided roadmap, an AI tutor that explains every step, and a mistake vault that turns wrong answers into mastery.

Pick your examSee how it works
5
exams covered
14.2M
questions answered
Jump to your exam
ACT
Speed-first US college admissions test.
View details →
SAT
Digital SAT, adaptive modules.
View details →
GMAT
Focus Edition for MBA admissions.
View details →
GRE
Shortened format for grad school.
View details →
CFA
Levels I, II, III · 2024 curriculum.
View details →
Exam · 01

ACT

Speed-first US college admissions test.

High-school juniors and seniors applying to US colleges who prefer a faster, more straightforward test than the SAT.

Format
English, Math, Reading, Science + optional Writing
Scoring
1–36 composite
Duration
~2h 55m (3h 35m with Writing)
Typical Prep
8–12 weeks · 2,400+ questions
How PrepGuin helps you on the ACT
  • Guided Roadmap

    Section-by-section pacing plan tuned to the ACT's tight time limits.

  • Ask Athena

    Walks through Science passages and grammar rules with citations to official ACT prep.

  • Mistake Vault

    Catches recurring traps in Reading inference and Math word problems.

See ACT pricing →How the tools work
Exam · 02

SAT

Digital SAT, adaptive modules.

Students aiming for selective US universities on the new Digital SAT / Bluebook format.

Format
Reading & Writing + Math · 4 adaptive modules · Bluebook app
Scoring
400–1600
Duration
2h 14m
Typical Prep
10–16 weeks · 3,100+ questions
How PrepGuin helps you on the SAT
  • Guided Roadmap

    Module-aware drills that mirror the adaptive routing logic of the Digital SAT.

  • Ask Athena

    Explains every Math and R&W question in plain language with rule references.

  • Mistake Vault

    Builds a personal deck of grammar conventions and algebra patterns you keep missing.

See SAT pricing →How the tools work
Exam · 03

GMAT

Focus Edition for MBA admissions.

MBA applicants targeting top business schools on the GMAT Focus Edition.

Format
Quantitative · Verbal · Data Insights
Scoring
205–805
Duration
2h 15m
Typical Prep
12–20 weeks · 2,800+ questions
How PrepGuin helps you on the GMAT
  • Guided Roadmap

    Quant-heavy pathway with dedicated Data Insights drill packs.

  • Ask Athena

    Step-by-step working for tough DS, PS, and CR questions.

  • Mistake Vault

    Surfaces the quant traps and logical gaps that cost you sub-section points.

See GMAT pricing →How the tools work
Exam · 04

GRE

Shortened format for grad school.

Applicants to masters and PhD programs, plus many specialized professional schools.

Format
Verbal · Quantitative · Analytical Writing
Scoring
130–170 per section · 0–6 AWA
Duration
1h 58m
Typical Prep
10–14 weeks · 2,600+ questions
How PrepGuin helps you on the GRE
  • Guided Roadmap

    Vocabulary, quant, and AWA stacked into a clear weekly cadence.

  • Ask Athena

    Unpacks dense reading comp passages and frames AWA arguments.

  • Mistake Vault

    Spaced-repetition built for GRE vocab — the use case it was made for.

See GRE pricing →How the tools work
Exam · 05

CFA

Levels I, II, III · 2024 curriculum.

Finance professionals pursuing the Chartered Financial Analyst designation.

Format
10 topic areas · computer-based · Ethics weighting throughout
Scoring
Pass / Fail (MPS)
Duration
Level I: 4h 30m across two sessions
Typical Prep
6 months / level · 5,000+ questions
How PrepGuin helps you on the CFA
  • Guided Roadmap

    Curriculum-aligned plan that front-loads Ethics and Quant.

  • Ask Athena

    Talks through formulas, derivations, and ethics scenarios with citations.

  • Mistake Vault

    Drills the formulas and ethics nuances you got wrong until they stick.

See CFA pricing →How the tools work
Tool · 01

Ask Athena.

An AI tutor that explains any question step-by-step — and cites the prep source it's pulling from.

  • → Step-by-step solutions, not just final answers.
  • → Cites Official Guide, ETS, CFAI material so you can verify.
  • → Handles math, diagrams, passages, and concept questions in one chat.
Ask Athena
GMAT · Quant
live
Why is the answer to OG 2024 Q387 not (C)?

(C) double-counts the overlap. Let me walk through it:

1. Total = A + B − (A ∩ B) + Neither

The trap is forgetting the intersection. The correct answer is (D) = 42.

Source · GMAT Official Guide 2024, Q387
You missed this
GRE · Vocabulary

PERSPICACIOUS

Having keen insight or judgment; mentally sharp.

Next review · in 3 daysEasy · Medium · Hard
GMAT · Data Sufficiency

If x² > 9, is x > 3?

Next review · tomorrow

Tool · 02

Mistake Vault.

Every wrong answer becomes a flashcard. Spaced repetition drills your weak topics into your strongest.

  • → Auto-generated from your practice and mock tests.
  • → Spaced cadence: today, tomorrow, in 3 days, in a week.
  • → Built for GRE vocab, GMAT quant traps, CFA formulas, SAT grammar rules.
Tool · 03

Guided Roadmap.

A clear next step, every day. No more "where do I start?" — chapters unlock in sequence, difficulty climbs as you do.

  • → Sequential chapter unlock — no skipping fundamentals.
  • → Adaptive difficulty: Easy → Medium → Hard.
  • → Built around your test date and weekly time budget.
Your SAT roadmap · Week 4 of 12
  • ✓Linear equations
    3★ Mastered
  • ✓Systems of equations
    3★ Mastered
  • •Ratios & proportions
    Up next →
  • ·Quadratic functions
    Locked
  • ·Geometry & trigonometry
    Locked
Analytics

See exactly where points are slipping.

Sub-topic accuracy, time-per-question, confidence patterns. The data you need to know what to fix next — not a vanity dashboard.

Sub-topic
accuracy
Per-Q
timing
Trend
vs. cohort
PrepGuin analytics dashboard showing sub-topic accuracy
Pricing · Per exam

One price. One exam. Everything included.

You only pay for the exam you're taking. Each package includes all three tools — Ask Athena, the Mistake Vault, and your Guided Roadmap — plus the full question bank for the prep window.

ACT
$129
6 months access
  • Ask Athena (unlimited)
  • Mistake Vault
  • Guided Roadmap
  • 2,400+ questions
  • Full-length mocks
SAT
$149
6 months access
  • Ask Athena (unlimited)
  • Mistake Vault
  • Guided Roadmap
  • 3,100+ questions
  • Full-length mocks
GMAT
$199
6 months access
  • Ask Athena (unlimited)
  • Mistake Vault
  • Guided Roadmap
  • 2,800+ questions
  • Full-length mocks
GRE
$179
6 months access
  • Ask Athena (unlimited)
  • Mistake Vault
  • Guided Roadmap
  • 2,600+ questions
  • Full-length mocks
CFA
$299
6 months access
  • Ask Athena (unlimited)
  • Mistake Vault
  • Guided Roadmap
  • 5,000+ questions
  • Full-length mocks

Bundle 2+ exams · save 20% applied automatically at checkout.

Pricing questions →
FAQ

Answers, before you ask.

Still curious? Our team replies within four hours, every day of the year.

How does pricing work?
You pay per exam. Pick the test you're taking, get full access to that exam's question bank, Ask Athena, the Mistake Vault, and your Guided Roadmap for the full prep window. No subscriptions, no upsells.
What if I'm preparing for more than one exam?
Bundle two or more exams and we knock 20% off automatically at checkout. Common pairings: SAT + ACT, GMAT + GRE.
What exactly is Ask Athena?
An AI tutor that explains any question or concept step-by-step and cites the official prep source — the Official Guide for SAT/ACT, ETS material for the GRE, the GMAT OG, and the CFAI curriculum for the CFA.
Is the platform current with the latest test formats?
Yes. Digital SAT / Bluebook, GMAT Focus Edition, the shortened GRE, and the 2024 CFA curriculum are all natively supported. We refresh content as the test makers update theirs.