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91HUB Hill Sharpen Logo
91HUB Hill Sharpen Logo

Meet your new study app: your textbook, simplified.

Don’t just use your textbook. Learn the same content faster with short videos, mini quizzes, and flashcards.

Find your study tools by textbook or topic:

The universe of knowledge… simplified

A study app that gets straight to the point.

Screenshot of video screen in Sharpen App

Learn

Quizzes, short videos, and chapter summaries.

Screenshot of student search screen in Sharpen App

Explore

Search for any topic.

Screenshot of student progress screen in Sharpen App

Progress

Track your progress and improve.

Learn

Quizzes, short videos, and chapter summaries.

Explore

Search for any topic.

Progress

Track your progress and improve.

Popular Titles

I like Sharpen because it helps me know what to focus on. The videos are easy to understand, and the quizzes help me feel prepared.

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