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Turn your notes into quizzes on Android for free

DeckOwl works in your Android browser. Upload a PDF, slides or notes and get multiple-choice, true/false or short answer questions, each with an explanation.

Create quizzes nowFree · No credit card required

Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates quizzes in seconds

How the free plan works on Android

A free quiz maker app for Android suits short study sessions on a phone, such as during a commute or between classes. DeckOwl runs in your Android browser rather than as a separate installed app, and the free plan includes 3 generations each month.

Works in your Android browser with no credit card needed to start
Upload PDFs, slides, notes or photos of pages
Multiple choice, true/false and short answer questions with explanations
Free plan includes 3 generations per month

Example Android development quiz questions

Which Android component represents a single screen with a user interface?Activity. It is the core component that holds a screen, and the system manages its lifecycle.

Which file declares an app's components, permissions and minimum SDK version?AndroidManifest.xml. The system reads this file before it launches any of the app's components.

Which lifecycle callback runs when an activity becomes visible and ready for user input?onResume(). It is called after onStart() and right before the user starts interacting with the activity.

Which Android component runs long operations without a user interface?Service. It keeps working without a screen, though recent Android versions restrict background execution.

Which language did Google make the preferred choice for new Android apps?Kotlin. Google announced it as the preferred language for Android development in 2019.

Generate the full set

Quizzes from your own material

Upload PDFs, DOCX, PPTX, plain text or photos of pages, and get questions drawn from what you actually need to learn.

Three question types

Multiple choice, true/false and short answer questions, each with an explanation so you learn why an answer is right.

Study in the browser

Run quizzes and flashcards in your Android browser with spaced repetition. The free plan includes 3 generations each month.

How it works

Upload your material

Add a PDF, slide deck, document or set of notes from your phone or computer.

Choose a quiz type

Pick multiple choice, true/false or short answer questions for the topic you are studying.

Study and review

Answer the questions in your browser and read the explanation for each one before moving on.

Each quiz is built from the material you upload, so you practice your own course content instead of generic questions. Exports to PDF, DOCX, Anki and CSV are part of the Plus plan at $7.99 a month or $39 a year, and QTI 2.1 and Moodle XML export are part of Pro.

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Frequently asked questions

Is there a free quiz maker app for Android?

DeckOwl is used in the browser on Android phones and tablets, and the free plan includes 3 generations per month with no credit card needed to start.

Can I export my Android quizzes for free?

No. Exports to PDF, DOCX, Anki and CSV are included in Plus, and QTI 2.1 and Moodle XML export are included in Pro.

How many quiz questions should I study per session?

Ten to twenty questions is a practical range for one sitting, which is enough to find gaps without overloading a short session.

What should I study first in Android development?

Start with activities, layouts and the app lifecycle, then move on to intents and background work. Answering quiz questions right after reading each topic usually helps it stick better than rereading.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.