Choosing the best ACT prep apps can feel impossible when dozens of options compete for your attention — and your money. We tested and compared the top free and paid ACT study apps side by side so you can find the one that actually matches your budget, timeline, and weaknesses.
With the national average ACT composite score sitting at 19.4 for the class of 2024, the right prep app can make a meaningful difference. Below is every major ACT prep app compared in one table — no need to open ten tabs.
| App | Price | Questions | Key Features | Best For |
|---|---|---|---|---|
| Magoosh ACT | $19.99–$399 | 1,300+ | Video lessons, score predictor, email support | Guided study with video explanations |
| UWorld ACT | $29–$99 | 3,200+ | Step-by-step explanations, performance tracking | Large question bank drilling |
| PrepScholar ACT | $397 | 1,500+ | AI-driven study plans, score guarantee | Structured, AI-guided prep |
| Varsity Tutors | Free | Varies | Diagnostic tests, live classes, flashcards | Budget-conscious students |
| ACT Academy | Free | Varies | Official ACT questions, personalized path | Official practice from ACT.org |
| Khan Academy | Free | N/A (ACT-adjacent) | Math and reading skill-building | Foundational skill gaps |
The biggest differentiator is not the number of questions — it is how those questions are explained. Apps like UWorld and Magoosh provide step-by-step breakdowns for every answer, while weaker apps simply mark answers right or wrong. Look for three things: detailed explanations, adaptive difficulty that adjusts to your performance, and full-length timed practice tests that simulate test-day conditions.
All six apps listed above work on both iOS and Android. Magoosh, UWorld, and PrepScholar also offer full web-based platforms, which is helpful for longer study sessions where you prefer a laptop. Varsity Tutors and ACT Academy are primarily mobile-focused but have web versions for practice tests. Khan Academy works across all platforms through its app and website.
You do not need to spend a dollar to start serious ACT prep. These three free ACT prep apps offer enough features for students who are self-motivated and willing to build their own study routine.
Varsity Tutors stands out as the most complete free option. It offers ACT-specific diagnostic tests that pinpoint your weak areas, full-length practice exams that simulate the real test, and a flashcard system for quick review. The standout feature is free live class sessions where you can learn from real tutors — a feature most paid apps do not even offer. The trade-off is that there is no adaptive algorithm tracking your progress over time.
ACT Academy is the official free resource built by the test makers themselves. It provides practice questions sourced directly from ACT, which means the question style and difficulty match what you will see on test day. The platform offers a personalized learning path based on your initial performance, though the question bank is smaller than what paid apps offer.
Khan Academy does not have a dedicated ACT course, but its math and reading content is valuable for building the foundational skills the ACT tests. If your diagnostic reveals gaps in algebra, geometry, or reading comprehension, Khan Academy's structured lessons can fill those gaps before you move to ACT-specific drilling. Think of it as a prerequisite, not a replacement.
Free apps are a strong starting point, but they share common weaknesses. Here is how they compare to paid options across key features:
| Feature | Free Apps | Paid Apps |
|---|---|---|
| Question Bank Size | Limited (varies) | 1,300–3,200+ questions |
| Video Explanations | Rare or absent | Included (Magoosh: 250+ videos) |
| Adaptive Learning | Not available | Adjusts to your weaknesses |
| Structured Study Plans | Self-directed only | Guided daily/weekly plans |
| Full Practice Tests | 1–2 available | Multiple full-length tests |
| Score Prediction | Not available | Estimated score tracking |
| Section-Specific Drills | Basic | Targeted by section and difficulty |
If you are serious about a significant score jump, paid apps provide the structure and depth that free options cannot match. Here is what each major paid app offers and what it costs.
Magoosh has helped over 100,000 students prepare for the ACT. It offers 1,300+ practice questions paired with 250+ video lessons that explain not just the answer, but the underlying concept. Pricing ranges from $19.99 for basic access to $399 for the premium plan with a score improvement guarantee. The video-first approach makes Magoosh ideal for students who learn better by watching and listening than by reading explanations.
UWorld leads the pack in sheer volume with 3,200+ practice questions, each accompanied by detailed step-by-step explanations. Its performance tracking dashboard shows exactly which topics you have mastered and which need more work. At $29 to $99 depending on the subscription length, UWorld is the strongest value for students who want to grind through a massive question bank. The explanations are text-based and thorough, making it a better fit for self-directed learners than for those who prefer video.
PrepScholar takes a different approach with 1,500+ questions wrapped in an AI-driven study plan that adapts to your performance in real time. The algorithm identifies your weak areas and automatically adjusts your daily assignments. At $397, it is the most expensive option — but it includes a score improvement guarantee. PrepScholar is best for students who want to be told exactly what to study each day rather than making those decisions themselves.
ACT research shows that students who used ACT Online Prep saw greater score gains than those who did not use test preparation, with the most improvement occurring in the first seven hours of study. Paid apps maximize those study hours by eliminating guesswork — their adaptive algorithms ensure you are always working on your weakest areas instead of reviewing content you have already mastered.
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Not every app excels at every section. If you already know where your weaknesses are, these section-specific recommendations will save you time.
| ACT Section | Best App | Why |
|---|---|---|
| Math | UWorld ACT | Largest math question bank with step-by-step worked solutions |
| English | Magoosh ACT | Video lessons covering every grammar rule tested on the ACT |
| Reading | Magoosh ACT | Passage-based practice with timed reading drills and strategies |
| Science | UWorld ACT | Data interpretation questions that mirror ACT science format |
UWorld is the strongest choice for ACT Math. Its 3,200+ question bank includes extensive math coverage with step-by-step worked solutions that show every calculation. The performance tracking lets you see exactly which math topics (algebra, geometry, trigonometry) need more work, and the difficulty ramps up as you improve.
Magoosh's video-based approach works particularly well for English and Reading. Grammar rules are easier to internalize through video explanations than through text, and the reading strategy videos teach pacing techniques that help students manage the time-pressured reading section. The 250+ video lessons cover every grammar rule and reading strategy the ACT tests.
ACT Science is less about memorizing science facts and more about interpreting data — charts, graphs, and experimental setups. UWorld excels here because its questions closely mirror the ACT's data interpretation format, and the step-by-step explanations teach you how to extract answers from complex figures efficiently.
Beyond comprehensive prep apps, dedicated flashcard and practice tools can sharpen specific skills. Here is how to use them effectively alongside your primary ACT study app.
The Magoosh ACT flashcard app is a free standalone tool with 216 cards organized by difficulty. It uses spaced repetition — showing you cards you miss more frequently and spacing out cards you have mastered. The cards cover vocabulary, math formulas, and grammar rules. It works best as a five-minute daily warm-up before your main study session.
Taking full-length practice tests under timed conditions is one of the most effective ACT prep strategies, and it is where apps add real value over paper tests. Both UWorld and Magoosh offer timed practice exams that track your pacing across sections. Over 1.4 million students took the ACT in the most recent testing year — the ones who performed best almost universally practiced under realistic timing conditions.
Spaced repetition and adaptive learning are the two features that separate modern ACT prep apps from static study materials. Spaced repetition schedules review of concepts right before you would naturally forget them, maximizing retention. Adaptive learning analyzes your performance in real time and serves harder questions in areas where you are improving while doubling down on areas where you are struggling. UWorld and PrepScholar both use adaptive algorithms, while Magoosh's flashcard app uses spaced repetition specifically.
The best ACT prep app for you depends on three things: how you learn, what you can spend, and how much time you have before test day.
If you prefer watching videos and having concepts explained to you, Magoosh is the clear winner with its 250+ video lessons. If you learn by doing — grinding through questions and reading detailed text explanations — UWorld's 3,200+ question bank is the better fit. If you want to be told exactly what to study each day without making decisions, PrepScholar's AI-driven study plan removes the guesswork entirely.
Start with a free app to establish your baseline score before committing money. Varsity Tutors' free diagnostic test will show you exactly where you stand. From there, most paid apps offer free trials — Magoosh provides a seven-day money-back guarantee, and UWorld offers a free trial with limited questions. Never pay for a premium app without testing it first.
Most experts recommend starting ACT prep 3 to 6 months before your test date. If you have four or more months, you can start with free resources and add a paid app later. If you have less than two months, invest in a structured paid app like PrepScholar or UWorld that will maximize your limited time with a targeted study plan. Students aiming for a modest improvement of 2 to 3 points can often achieve it with free apps alone, while those chasing a 5+ point jump benefit significantly from paid options.
Worked Example
A student currently scoring 22 on ACT practice tests wants to reach 28 within four months. Their weakest sections are Math and Science.