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Student Testimony

Stellar was the lifesaver I needed for my APs

I was completely overwhelmed with my APs at first. I didn’t have the motivation to study or the right resources to succeed. But Stellar changed everything. Its immersive experience kept me motivated, and the high-quality study guides, practice problems, and mock tests gave me the tools I needed. And it’s completely free too!

— 9th Grade AP Student

Feature Comparison

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We know how frustrating it can be to find a truly free app, one without ads, subscriptions, or hidden paywalls.
That’s why we created a solution, with the best of all your favorite apps, that puts users first.

Infinite AI-Powered Practice
High Quality Practice Questions
High Quality Study Guides
Unlimited AP FRQ Practice
Full-Length AP Practice Exams
Gamification and Streak
Visual-Based AI Assistant
Practice from Custom Notes and Flashcards
Interactive Lessons and Practice
Leaderboard
Authentic Competitive Math Questions
Intuitive Competitive Math Explanations
Competitive Math Visual Tracker
Price (per month) FREE $0.00 $4.00 (Khanmigo) $18.00 $19.99 $27.99 ≈$40.00 (per Book)

インタラクティブなレッスン

インタラクティブ で質の高いレッスンで学習

当社のレッスンは、より効果的かつ効率的に学習できるように設計されています。包括的でインタラクティブであり、あらゆる概念を直感的に理解できるようにします。

Math Graphing Exercise

Please plot the function, 3y = 9x + 12 on the coordinate plane. You can plot the function by simply clicking two points that are on it.

xy

インタラクティブな演習

インタラクティブな演習 で練習

ラベリング、問題解決、シミュレーションなどのインタラクティブなタスクに参加して、複雑な概念をより簡単に把握し、記憶できるようにします。

無限練習

AIで 無限 練習問題

AIが生成した無限の質問にアクセスして、継続的な練習の機会を提供し、すべての科目で準備ができて自信を持てるようにします。

Multiple Choice Question

Choose the best option:

A
B
C
D
1
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A
B
C
D

試験形式のMCQ

AP®、IB®、SAT® スタイル のMCQと模擬試験が無制限

実際の試験条件をシミュレートするように設計されたさまざまな模擬試験で、すべてのAP®科目の準備を徹底的に行いましょう。

試験形式のFRQ

無制限の AP®&IB® スタイル FRQ練習

AP®試験形式を模倣するように設計された専門的に作成された資料で、自由記述問題(FRQ)を習得しましょう。

1
AP® US History Stimulus SAQ

“In the late 19th and early 20th centuries, American foreign policy was primarily defined by the pursuit of expansionism, driven by a belief in American exceptionalism and a duty to spread democracy and capitalism around the globe. This era saw the United States engage in several conflicts and interventions, including the Spanish-American War of 1898, which not only resulted in territorial acquisitions like Puerto Rico and the Philippines but also marked a significant shift in the nation's identity as a global power. This aggressive foreign policy was justified by arguments of moral obligation, presenting the annexation of overseas territories as a benevolent act aimed at uplifting less fortunate nations, thus embodying a humanitarian facade coupled with economic interests.”

Source: John A. Thompson, historian, “The United States and the Age of Imperialism”, 2003

“Contrarily, the rise of American imperialism during this period can be seen as a hypocritical endeavor, masking underlying motives of economic exploitation and nationalistic fervor under the guise of moral superiority. Critics of this foreign policy argued that instead of liberating oppressed peoples, the United States sought to reproduce its own dominance in foreign lands for the benefit of American corporations and investors. The consequences of such policies were often detrimental, leading to unrest and resistance in the territories affected, as exemplified by the Philippine-American War, where the rhetoric of liberation was starkly at odds with the reality of subjugation and violence. This imperialistic approach not only contradicted the founding principles of liberty and self-determination but also illuminated the darker side of America's global ambitions, showing that the nation's self-image was often built on the subjugation of others.”

Source: David S. Mason, historian, “Imperialism and American Identity”, 2010

Using the excerpts, respond to parts a, b, and c.

a. Briefly describe one major difference between Thompson’s and Mason’s interpretations of American foreign policy in the late 19th and early 20th centuries.

b. Briefly explain how one historical event or development from 1865 to 1917 not directly mentioned in the excerpts could be used to support Thompson’s interpretation.

c. Briefly explain how one historical event or development from 1865 to 1917 not directly mentioned in the excerpts could be used to support Mason’s interpretation.

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AMC Question

Choose the best option:

A
B
C
D
E

無限の競技練習

コンペティション に向けて練習

厳選された数千の問題と無限の練習で、AMC、AIME、F=maなどの競技に備えましょう。進捗を追跡し、リーダーボードを登り、ゲーミフィケーションされたシステムを通じて評価を構築します。

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Great free resource

@burritopig

The free aspect of Stellar is great! Hope you don’t decide to change that :)

Looks & works like AP

@dylanh70607

Love the UI, looks exactly like the AP thing. I love the feature of the 1/4, 1/3 test stuff. Also good.

Super helpful & organized

@tvisha

Stellar being free is incredibly helpful and makes it a great resource for lots of students. The layout is simple yet organized. Thank you for putting in the time to make such detailed courses.

Solid AP practice

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Good AP Practice Questions

Easy to navigate

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I liked how many courses there are and how easy it is to navigate the app/website.

Covers important APs

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It has a good range of topics and includes important APs and competition questions for free! Really amazing.

Clean UI + leaderboard

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Easy to understand. I like the leaderboard because it instills some competition.

Amazing math competition prep and infinite practice

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I'm loving the infinite practice, and the hints. I've always found it difficult to practice for math competitions due to the difficult to navigate websites, but this website puts it all in one place.

Feels like real AP material

@alou

The wording of the answer choices and questions look a lot like actual AP material.

Amazing all-in-one platform

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I think Stellar is an amazing learning platform. I'm a fan of the active reading section and the mock exam. It's great to have everything completely free, no different tiers. Unlimited analysis and explanation, informative AI. Appearance wise, Stellar thrives.

Aesthetic & works well

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It is aesthetic, it works well, it has good questions.

Amazing UI and courses

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This is beyond an app

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Stellar is more than an app, it’s a creative escape. I love how beautifully designed it is, how intuitive everything feels, and how it always sparks inspiration. It’s my go to space for ideas and connection.

Incredible free resource

@thunderbee

I only started using Stellar yesterday evening and I'm absolutely taken aback by how amazing this website is. My favorite part is the variety of AP- Style MCQS- the conceptual ones are perfect for building understanding and the hard AP level questions are perfect for test prep or just for a fun challenge. Thank you so much, I'll definitely being using this website for all my AP classes!

Super helpful and completly free

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I love how it is so helpful and that it is completely free. Stellar gave me confidence when I go into my high school classes! The best part is that it is 100% free!!!!!!!

Y'all are santa for studying

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I love the questions the teaching you even teach AP for free like you guys are like Santa for studying love y'all

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