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Numas · App 03 · the Android version
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Numas Study Android

Your lecture notes become quizzes, your question bank becomes training, and the app tells you what to review and when. With ten chemistry tools that work offline and a lab notebook that writes the report with you.

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Nothing leaves your phone

No account, no sign-up, no Numas server: notes, questions, results and reports stay on the device, and you can take them with you any time in a readable file. AI features are optional and use your own personal key (Gemini, OpenAI or Claude): your texts travel only between you and the provider you choose. The guide: how to get a key →

Notes and spaced review

  • Upload the PDF and the AI processes it: summary, key points, glossary and questions for every document.
  • The app brings the review to you: spaced repetition, questions come back right before you'd forget them.
  • Chat with the AI about a document, a quiz or a lab session: it answers about your material, not at random.
  • Export a whole course to a JSON file: import it on another phone and pick up where you left off.

Question banks and study plan

  • Import the question bank from PDF and practise right away, with on-device grading.
  • Answers marked in the PDF are detected; doubtful ones are flagged for manual correction.
  • A study plan built on your exam date: reading, review and quizzes balanced day by day, by hand or with the AI.
  • The home screen tells you what's due each day: reviews about to expire and today's plan.

Chemistry tools, offline

  • Interactive periodic table: 118 elements, data from NIST sources.
  • Concentrations, dilutions, pH of acids and bases, buffers, molar mass.
  • Balancing, limiting reactant and yield, with every step shown.
  • Reaction products and functional groups: type CH3CH2OH and the app recognises ethanol, its family and the IUPAC name.
  • Nomenclature and organic reactions, with exercises.

Lab notebook

  • Measurements in tables, notes and observations for every session.
  • The report builds itself: header with your details, tables, results.
  • Export to Markdown, CSV or RTF and finish it on your computer.

The app, for real.

The home screen: greeting, reviews due, nearest exam and today's plan A course with processed notes and today's review A graded quiz question with its explanation
The interactive periodic table Functional groups: CH3CH2OH recognised as ethanol The study plan, day by day until the exam
Screenshots of the app on an Android phone. Sample data.

What's different from the Apple version

Better said before you download than after. The iPhone, iPad and Mac version came first and has three things that don't exist here yet:

Everything else — notes, quizzes, question banks, study plan, lab notebook and chemistry tools — is on both. See the iPhone, iPad and Mac version →

Free to start, Pro for no limits.

Free

€0 · forever
  • One course with 5 documents and 5 AI processings per day.
  • Question banks and quizzes with spaced review.
  • All the chemistry tools, offline.
  • Lab notebook with Markdown and CSV export.
  • Study plan built by hand.

Pro

€2.99/month · €19.99/year (7 days free)
  • Unlimited courses and documents, AI processings with no counter.
  • AI chat on notes, quizzes and lab sessions.
  • Study plan generated by the AI.
  • Lab report in RTF, ready for Word.
  • Cancel from the Play Store, any time.

Prices for Italy. In other countries the Play Store shows the amount in your local currency. Your AI key stays yours on the Pro plan too.

Get it on Google Play → Phones and tablets with Android 7 or later · free to start (1 course)