The Best Study Apps for ACT Prep in 2026 (Honestly Ranked)

Why ACT prep needs its own list

The SAT gets all the attention — official Khan Academy partnership, tons of free resources, every "test prep" listicle leads with it. The ACT gets a fraction of the coverage, but it's still taken by 1.3+ million students every year, and it's the dominant test in much of the Midwest and South. The right tools for it are slightly different from the SAT, partly because the ACT has a science section the SAT doesn't, and partly because the ACT is more time-pressured per question.

This post is the honest tool stack for ACT prep. We make Tutoremy, an AI study app, and we'll mention it where it actually fits — but most of this post is about other tools, because the right ACT prep stack is dominated by official practice materials and a few specific apps that beat everything else.

What the ACT actually tests (briefly)

Before the apps, the structure. The ACT is four sections (English, Math, Reading, Science) plus an optional Writing section. The big differences from the SAT:

• Science section. Despite the name, it's mostly about reading scientific charts, graphs, and experiments — not about knowing biology or chemistry content. The SAT has nothing equivalent.
• Time pressure. ACT questions are simpler than SAT questions on average, but you have less time per question. Pacing is the bottleneck for most test-takers.
• Math. ACT math is more breadth, less depth. You'll see geometry and trig questions the SAT mostly skips.
• Reading. Four passages, 35 minutes, 40 questions. Brutal pacing.

The implication: ACT prep is more about pacing and pattern recognition than the SAT, and the apps that work best reflect that.

1. ACT Official Prep (Online and the Red Book) — start here

The official ACT prep materials are the foundation of any serious prep stack. The two pieces:

• ACT Official Prep (online) — the official platform, paid but cheaper than commercial alternatives. Includes real ACT practice tests written by the test makers.
• The Official ACT Prep Guide (the "Red Book") — physical or PDF, contains five real practice tests with explanations. This is the single most important piece of ACT prep material that exists.

Every other tool on this list is a complement to these. If you're choosing only one resource, choose the official one — practice questions written by anyone other than ACT, Inc. are subtly different from real ACT questions in ways that matter on test day.

2. ACT Official Practice Tests (free PDFs) — the version you should actually start with

Before paying for anything, the ACT releases several full-length practice tests for free as PDFs on their website. Take one of these as a baseline before you spend a single dollar on prep. It tells you:

• Your current score
• Which sections you're worst at
• Whether time is your bottleneck

That diagnostic is the difference between three months of focused prep and three months of spinning on tools that don't help your specific weakness.

3. UWorld ACT — the question bank with the best explanations

Once you've done the official ACT material, UWorld's ACT question bank is the next step for most serious test-takers. The questions are close to ACT-style, but the explanations are dramatically better than the official materials — which is the actual reason to use it. You learn from explanations of wrong answers, not from the questions themselves.

UWorld is paid, but it's the question bank most students who score in the 30+ range used. If you're aiming for a top score and your school doesn't provide an alternative, this is the tool worth paying for.

4. Magoosh ACT — the budget alternative with a good app

Magoosh's ACT prep is the budget version of UWorld. Cheaper, with a solid mobile app, video explanations for each question, and a study schedule generator. The questions are slightly less ACT-realistic than UWorld's, but the price difference is significant and the app experience is one of the best in the test-prep category.

When to pick Magoosh over UWorld: if budget matters, if you study mostly on your phone, or if you specifically learn better from video explanations.

5. Khan Academy — for content review (not ACT-specific)

Khan Academy is the official partner for the SAT, not the ACT. There's no ACT-specific Khan Academy course. But Khan Academy is still useful for ACT prep in one specific way: filling content gaps. If you bombed the math section because you forgot how to find the area of a trapezoid, Khan Academy has free, high-quality math instruction that will fill that gap fast.

Use Khan Academy as a content-review backup, not as your primary ACT prep platform.

6. Tutoremy — for vocabulary, formulas, and content drilling

This is where we honestly fit. Tutoremy isn't an ACT prep platform — it's an AI study app that turns uploaded material into flashcards and quizzes. For ACT prep specifically, that means:

• Upload an ACT vocabulary list and get a flashcard deck instantly
• Upload your math formula sheet (or any "formulas to memorize" guide) and get an interactive quiz
• Upload your weakest topic's review notes and get drilled on them
• Upload the explanations from a practice test and turn them into reviewable cards

Tutoremy has a real free tier — no trial timer, no credit card. The free tier handles the use cases above without limit.

When Tutoremy isn't the right ACT tool: for the actual practice test experience, use UWorld or the official ACT materials. Tutoremy isn't a question bank — it's the tool that turns content into flashcards. Different role.

Many students use both: ACT Official + UWorld for practice questions, plus Tutoremy for memorization-heavy content (vocab, formulas, specific weak areas).

7. Quizlet or Knowt — for community-made ACT vocabulary sets

The ACT vocabulary section is small compared to the SAT pre-2016, but vocabulary still shows up in the English and Reading sections. There are dozens of community-made ACT vocabulary sets on Quizlet (some still free) and Knowt (all free). For 30 minutes of drill work, this is enough.

If you don't already use Quizlet, use Knowt — it's free, imports Quizlet sets, and doesn't paywall the Learn mode.

8. ACT Practice Test apps (Varsity Tutors, Princeton Review free apps)

Varsity Tutors and Princeton Review both offer free ACT prep apps with practice questions and timed sections. The questions aren't as good as official ACT material or UWorld, but they're free and they let you do timed practice on your phone during commute time. Useful as a supplement, not a replacement.

9. A pacing timer — for solving the actual ACT problem

The single biggest reason students underperform on the ACT is pacing. The ACT gives you less time per question than the SAT, and many students who can answer every question correctly with unlimited time can't finish a section in the actual time limit.

The fix is to practice with a timer set to the section's per-question average. For Reading: 52 seconds per question. For English: 36 seconds. For Math: 60 seconds. For Science: 53 seconds. Practice individual questions at this pace before practicing full sections.

A simple visible countdown timer app — TimeTimer, Focus Timer, or even your phone's built-in timer — is enough. The point is that you can SEE the time draining, which trains pacing intuition.

10. Notion or Apple Notes — for tracking which question types you keep getting wrong

You don't need a fancy "ACT tracker" app. A simple spreadsheet or Notion page with two columns — "wrong question type" and "why I got it wrong" — is enough. Most students who improve their score the most are the ones who systematically log their wrong answers and review the patterns once a week.

What to ignore

A few things you don't need that other ACT prep listicles will push: