Demonstratum: PDF Exam Quiz

Study Prep, Revision & Tests

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Pick the pages that matter in any PDF and let AI build a quiz where every answer cites its source page. Then master it with spaced repetition and timed tests. Turn the PDFs you already study from into quizzes that actually make it stick. Demonstratum takes your source (a chapter, a paper, your own lecture notes) and generates quiz questions from the exact pages you choose. Every answer cites the page it came from, so you can always check it against the original. Then you practice on a spaced-repetition schedule and build timed tests, until the material is genuinely yours. THE LOOP • Import: add any PDF to your library. Your sources stay organized like a shelf of books. • Generate: pick the pages that matter and let AI write the questions. It handles the busywork; you keep studying. • Check the source: every question links back to its page with one tap. No more wondering "wait, is that right?" • Review: practice in Learn, Review, or Cram mode. Spaced repetition brings each question back right when you're about to forget it. • Prove it: build timed tests that draw questions across all your quizzes, then watch your mastery grow on your study dashboard. WHY DEMONSTRATUM • Grounded in your material: questions come from your pages, not the open internet. • Cited answers: every explanation points to the source, so you can trust and verify it. • Real spaced repetition: an Anki-style schedule that adapts to how well you actually remember. • Timed tests: assemble exams across quizzes and simulate the real thing. • A daily launchpad: Today shows what's due, where you left off, and what to focus on next. • Clean and native: fast, distraction-free iOS design with light and dark mode. Built for students, exam prep, and anyone who learns from documents — lecture notes, textbooks, past papers, certification guides. Import your first PDF and see how much faster it sticks. DEMONSTRATUM PRO Pro is an auto-renewing subscription that unlocks unlimited quiz creation and editing. It is offered as a Weekly, Monthly, or Annual plan; the exact length and price of each plan are shown in the app before you buy, in your local currency. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. LEGAL Terms of Use (EULA): https://demonstratum.devtor.site/terms.html Privacy Policy: https://demonstratum.devtor.site/privacy.html

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Improved pricing reliability: subscription prices are now displayed accurately for your region before purchase. • Streamlined onboarding for a faster and simpler first-time experience. • Improved PDF import with clearer error messages for unsupported or oversized files. • Fixed quiz creation credit issues to improve accuracy and reliability.

Version 1.0.1

The developer, Minh Nhat Vo, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Minh Nhat Vo
Size
  • 54.9 MB
Category
  • Education
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • Pro Yearly $99.99
  • Pro Monthly $14.99
  • Pro Weekly $6.99
  • Learn More
Copyright
  • © 2026 Devtor
  • Developer Website
  • Privacy Policy
  • License Agreement

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