Study on your phone with Ready4 ACT (Formerly Prep4 ACT) and ditch all the books and paper flashcards. Access over 1,500 questions with detailed answer explanations, hundreds of flashcards, and detailed score analysis for FREE when you download our app.

Our Smart Guide helps you learn the critical concepts tested on the ACT with detailed flashcards and practice questions. As you practice ACT questions on Ready4 ACT, the app tracks your performance and highlights your test strengths and weaknesses, helping you zero in on what you need to study in order to boost your ACT score through our adaptive algorithms. As you work through your course, you’ll develop your Reading Comprehension abilities, improve your speed on Math questions, learn to spot grammar errors on English questions, and draw inferences on Science questions.


-Intuitive lessons that take you through ACT concepts step-by-step
-Over 1,500 ACT questions with detailed answer explanations
-Review 100+ flashcards on essential Math, Reading, English, and Science topics
-Track your strengths and weaknesses with our in-app analytics
-Customizable practice tests to fit your needs
-Question of the Day keeps you engaged and in the zone for your upcoming test
-Top Schools List: Browse 400+ colleges and universities and add the schools you wish to apply to on your Top Schools List. See exactly how far away your estimated ACT score is from your school's average scores, and get a clear picture of how close you are to getting the ACT score you need.
-School Matcher: Find schools that match your preferences and future goals using our smart matching algorithm

Let Ready4 ACT help you reach your potential on the ACT so that you can make your college dreams a reality. Also taking the SAT? Check out our app, Ready4 SAT!

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ACT® is a registered trademark of ACT, Inc. ACT, Inc. does not endorse, nor is it affiliated in any way with the owner or any content of this application.

What’s New

Version 9.5.5

Support iPhone X\iPhone XS\iPhone XR\iPhone XS Max.

Ratings and Reviews

4.0 out of 5
60 Ratings

60 Ratings

Catcher44 ,

Have to rate to unlock more

Great app! Just have a rate it

But one issue ,

Annoying and frustrating!

I had just gotten the app yesterday and I was really satisfied with it, and I was doing very good (averaging out at 34). When I was working on the math portions and taking the practices, it kept telling me my answers were wrong even though I was clicking the correct choices. So I decided to retake it just in case maybe I was wrong, even double checking what I answered. Nothing changed! It still kept me telling me I was wrong when I was giving it the right answers! On the THIRD try it changed the correct answers completely, even though it was asking the same questions as before. Very dissatisfied with the app, but I do hope the developers can fix this.

Fun swimmer ,


I have searched for SO many ACT prep apps and have not found any good ones. This app is completely free, user friendly, and is a great study guide! Best ACT prep app around!


Ready4, Inc.
196.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Simplified Chinese, Traditional Chinese

Age Rating
In-App Purchases
  1. Premium Account $19.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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