Get a free chemistry quiz app that runs in your browser
Turn your chemistry notes, slides or textbook photos into practice quizzes with explanations. Start free, no credit card needed.
Chemistry practice without a download
DeckOwl turns your chemistry notes into a free chemistry quiz app you can open in any browser, so there is nothing to install.
- Multiple choice, true/false and short answer questions
- Explanations for every answer so you can see why a reaction or calculation works
- Photos of textbook pages read with text recognition
- Free plan with 3 generations per month and no credit card needed
Quizzes from your own material
Upload PDFs, DOCX or PPTX files, plain notes, or photos of pages. Text recognition reads the content so the questions match what your class covers.
Explanations for every answer
Each multiple choice, true/false and short answer question comes with an explanation, so you learn why a reaction, bond or calculation works.
Spaced review on paid plans
Plus adds spaced repetition for flashcards and unlimited generations. Pro adds stronger AI and bulk upload for larger course folders.
How it works
Upload your notes
Add a lecture PDF, slide deck, DOCX file or a photo of a textbook page to start a new chemistry quiz.
Choose a question type
Pick multiple choice, true/false or short answer. Each generated question includes a correct answer and an explanation.
Study and retry misses
Work through the quiz in your browser, then go back to the questions you missed until the topic holds.
The free plan includes 3 generations per month and studying in the browser. Exports to PDF, DOCX, Anki and CSV, unlimited generations and spaced repetition come with Plus at $39/year or $7.99/month. Pro adds QTI 2.1 and Moodle XML export at $14.99/month.
Upload PDFs, DOCX or PPTX files, plain notes, or photos of textbook pages, and the text is read with recognition. Quizzes include multiple choice, true/false and short answer, each with an explanation for the correct answer.
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Frequently asked questions
How should I use explanations when I get a chemistry question wrong?
Read the explanation, then redo the problem without looking at it. For stoichiometry or balancing, write each step in your own words so you can repeat it on an exam.
How often should I retry chemistry questions I missed?
Retry missed questions after a day or two, then again after a week. Spacing the reviews helps the reactions, formulas and definitions stick longer than cramming.
Do I need to download anything to use DeckOwl?
No. The free plan runs in your browser. Exporting to PDF, DOCX, Anki or CSV requires the Plus plan.
Is there a free plan, and is a credit card required?
Yes, the free plan includes 3 generations per month and no credit card is needed to start. Students get 40% off paid plans with a school email.
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