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Expert-Designed SAT and ACT Prep, Personalized to You

Unrivaled preparation with
the largest question bank

Acely provides over twice as many SAT® practice questions as the College Board, ensuring students are thoroughly prepared for test day.

Acely also offers thousands of Acely questions for the ACT® test, so students can have an all-in-one platform for their test prep. Whether they’re preparing for SAT® module 2 or the optional ACT science section, Acely has everything they need to succeed.

15k+

human-verified practice questions

5.6mn+

questions answered by users

185k+

hints given by our AI practice tool

Improve your SAT Score in Less Time

Your path to a high SAT score starts here. Students who use Acely for at least one month see significant SAT score increases. Our personalized prep platform targets your weak spots, creates a custom SAT study plan, tracks your progress, and builds your confidence for test day.

Master Every Difficulty Level

So, how hard is the SAT? With the digital adaptive format, your performance determines the difficulty. The exam gets more challenging when you answer questions correctly, and to earn a top score, you must be prepared for those harder questions in the second module.

Acely’s Difficulty Selector prepares you for every level: build your foundation with easy questions, solidify your core skills with medium, and train specifically on the hard questions you need to master.

Reach your Goal Score with a Personalized Study Plan

Learn how to improve your SAT or ACT score with a personalized study plan. Acely will guide you on what to study every day, help you prioritize, and track your progress toward that goal.

Your roadmap for how to study for the SAT and ACT

Acely demystifies test prep by building a strategic plan tailored to your goal score, delivering thousands of expert-written practice questions, and providing full-length mock exams to build confidence and track progress.

SAT or ACT Study Plan

Enter your current score and goal score and Acely will create a plan that adapts to you. Get guidance on how much to practice each section of the exam and see areas where you could make up the most points. 

Full-length Mock Tests

Acely offers full-length adaptive SAT mock tests as well as full-length enhanced ACT mock tests, so students can practice pacing and watch their scores improve.

Score Predictions

See your projected score for the whole exam and each section.

Select Difficulty

Use Acely’s “select your difficulty” feature to practice easy, medium, or hard questions. The SAT is an adaptive exam with three levels of question difficulty.

Practice Similar Questions

Choose to practice a similar question after questions you’ve missed or feel unconfident about. 

Thousands of Practice Questions

Never run out of questions with Acely’s massive database of practice questions. 

Hints and Explanations

Never feel lost again. Get hints and in depth explanations for each question and answer.

Performance Data

Keep track of how you’re performing overall and in each section of the exam. 

Practice Your Mistakes

See all the questions you’ve missed in one place. Identify patterns of where you’re losing points and give them another go!

Accuracy by Topic

See exactly where you are struggling and practice in targeted study sessions. 

Resource Library

Get access to resources and study guides that offer insight into exams, college prep, and life in high school.

Always Online

With the Acely web app, your SAT® & ACT® prep is available anywhere, anytime.

Real Students, Real ACT & SAT Results

Don’t just take our word for it. See why students and parents rate Acely ‘Excellent’ on Trustpilot for boosting ACT and SAT scores and building confidence.

5 stars

Acely: 10/10

Acely was absolutely amazing for me. I used Acely for about 1 and a half month when studying for this March SAT and the improvement was incredible. I got a 1360 on my December SAT and a 1530 on my March SAT: a 170-point difference in just 1 and a half months’ worth of studying! Absolutely a 10/10 service, would recommend to anyone looking to boost their scores.

Date of experience: March 08, 2025

5 stars

100% worth it

I bought this service right after I took the March Digital SAT and immediately realized how helpful it was. I got a 1300 on the March SAT and knew I needed more than one month. So, I upgraded from the one month to the three month plan and grinded hundreds of questions over the summer getting my accuracy up. The best part of the program is definitely the individual questions and how they have them mapped out in the subsections that College Board has laid out on their SAT practice question bank. The AI tool giving hints is also helpful and is good at giving step by steps to help solve difficult questions. The only minor concern I have is that some of the practice tests do have questions that are extremely difficult, especially in module 1 which doesn’t exactly mimic the real exam but this might not even be a flaw. Preparing with these harder practice tests(harder than bluebook practice tests) was super helpful on the real test and I got a 1510 on the October Exam. I’d recommend this for anyone who needs help getting those hard module 2 questions down and anyone who wants to learn the fundamental questions of the exam.

Date of experience: October 05, 2024

Your Personal AI Tutor for Hints and Explanations

Chat with Acely’s AI tutor and get not only thorough answer explanations, but also ask more nuanced follow-up questions and get smart tips and tricks to ace the SAT.

Thousands of Practice Questions

Practice is the best way to improve your score. With Acely, you’ll get access to thousands of high-quality questions. Your personalized study plan will recommend where to focus your practice, ensuring you’re ready for test day.

Ace the SAT & ACT
with our AI-powered practice tool

Prep smarter with thousands of questions and personalized guidance, all at your command. Your digital study buddy is here to guide you to success, one practice question at a time.

PRACTICE MODE
Practice questions with your AI Tutor

Begin practicing for your exam with thousands of high-quality practice questions. Practice mode allows you access to our AI-powered chatbot, so for each question you can ask for hints and even explanations about why an answer is right or wrong.

7,500+ Questions for the SAT®
4,200+ Questions for the ACT®
Hints & Explanations
Select Difficulty
DIAGNOSTIC MODE
Test your knowledge

Acely provides full-length, timed practice exams that mirror the actual testing environment. Answer questions across all sections and experience the format you’ll encounter on exam day. 

Adaptive Modules
Eliminate Answers
Timer
Projected Score
Mark for Review
Built-in Calculator
25 Practice Tests for the SAT®
10 Practice Tests for the ACT®

Are you a counselor, tutor or test prep center?

We’d love to work with you! Contact us to learn how we partner with educators and the unique tools we can offer you.

Questions built by a team of
educators
,
tutors
, and
test-prep experts
.

Our team has been working with students since 2017, and we know AI is the next step in education. We believe that combining our quality education with cutting-edge AI tools allows us to elevate your test prep experience and help you achieve your goal score. 

Our content is handcrafted by the Acely curriculum team, who are assisted by Acely’s AI workflows. The curriculum team consists of educators and test prep experts with experience in developing questions for multiple standardized tests.

All questions, answers, hints, and explanations are reviewed by Acely’s Curriculum Team for accuracy, difficulty, and structure.

See your performance as you practice

Accuracy Shown by Topic
accuracy shown by topic

Explore our Pro Plans by Exam

All plans have access to Acely’s cutting edge tools like projected scores, hints and explanations, performance data, and more!

SAT + ACT

Access to 10,000+ thousands of Acely questions for the SAT® and ACT® test and 26 full-length practice exams. Plus, PSAT practice questions and practice exams.

SAT Only

Access to 7,500+ SAT practice questions and 25 full-length, adaptive practice exams. Plus, PSAT practice questions and practice exams.

Monthly Plan
$199 per month
ACT Only

Access to 4,200+ Acely questions for the ACT® test and 10 full-length practice exams.

Monthly Plan
$99 per month

Meet Our Founder

Vivian Shen, Acely Founder

“When I applied to Stanford University at 17, I couldn’t have imagined what the next decade of my life would hold. Like many other high school seniors, I was making BIG decisions that would impact everything about my future. I had always dreamed of being an engineer at Google, but that quickly evolved. First, as a consultant at McKinsey & Company, then to running product at Operator, and finally, founding my own company (YC’18). “

Vivian founded Acely to empower students to discover their best futures. Vivian and the Acely team truly believe when students have access to the right kind of support, tools, and peer community, it can change lives.

Vivian headshot
Vivian college photo
our team
Backed by a team with experience from Google, Stanford, and MIT that is passionate about educating students around the world.
7+

years educating students

30k

students have worked with us

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Frequently Asked Questions

Click the button to sign up for your free trial, and then make sure to verify your email!

Yes! Acely offers 7,500+ SAT practice questions plus 25 full-length adaptive SAT practice tests. The test content and features are based on the CollegeBoard’s Bluebook digital SAT test. Students can continue taking the adaptive test until they run out of new questions.

Acely also offers 2,800+ PSAT questions, 10 full-length PSAT practice tests, 4,200+ questions to prepare for the ACT® and question banks for AP Biology, AP English Literature, AP World History, AP US History, AP Pre Calculus, AP Calculus AB and AP Calculus BC.

Currently, Acely is designed as a website accessible by both desktop and mobile.

We built a system that interfaces with foundational LLMs to facilitate conversations between the user and the Acely bot. We can plug in various generative AI models to this system and rapidly experiment in order to evaluate which foundation model can deliver the most helpful, conversational, and natural-sounding study buddy for users. Hints are generated by AI and answer explanations are augmented by AI.

For a given question we “show” the model additional information pertaining to the question. This results in higher quality, more specific, more relevant responses and reduces the risk of the model veering off in its response. This data will also be collected and used to improve the efficacy of responses and improve our ability to generate content. Additionally, all questions and answers are human-verified to ensure accuracy.

Our content is handcrafted by the Acely curriculum team, who are assisted by Acely’s AI workflows. The curriculum team consists of educators and test prep experts who have experience building questions for multiple standardized tests, including the SAT and ACT.

All questions, answers, hints and explanations are reviewed and verified by our team to ensure they meet College Board standards in terms of topics, accuracy, difficulty, and structure.

Acely is completely student-paced, meaning they determine how much to use it. Since it’s available 24/7, users can determine a certain number of minutes a day to study.

Acely also has a study planner tool that helps students figure out exactly how many questions per category they need to complete based on their baseline score and test date. This helps students know where to start their studying and the quantity of practice questions and tests to complete before their test date.

Yes! While Acely is best known for its SAT tools, we have a plan for ACT, too. There is also an AP plan users can add on to access question banks for AP Biology, AP English Literature, AP World History, and AP US History.

Desmos Shortcuts

By typing in these shortcuts, you’ll get the indicated feature.

shift + 6: exponent

sqrt: square root

cbrt: cubed root

nthroot: “nth” root

table: creates a table to add points

pi: adds the pi value

frac: creates an empty fraction

< = : ≤

shift + \: absolute value symbol