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Inventions

Who invented it, and when?

Qardbox is a free flashcard app for iPhone, iPad and Apple Watch, with no ads and with your data staying yours. It costs nothing, asks for no account and shows no ads, and your own cards stay unlimited. That is a promise.

You can always create as many flashcards as you like, free of charge.

This deck costs you nothing. You get 126 flashcards, sorted into 3 categories and with notes that add to them. You start out learning instead of typing, and whatever you find missing later you add yourself.

Cards
126
Categories
3
Price
free

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What is in this deck

With this deck you learn 42 inventions with their inventor and their year, asked in both directions.

Who invented the zip, who the hook-and-loop fastener, and in which year did the ballpoint pen arrive? Names you know, attached to things you use daily.

42 inventions in three directions: from the object to the person, from the person to the object, and to the year.

Where the credit is disputed, the dispute is on the card. Meucci had the telephone first, Bell had the patent; for radio a court ruled in Tesla's favour in 1943.

The categories decide what comes up: start with “In which year” alone and add the rest when you are ready.

What you learn

  • 42 inventions with inventor and year
  • The names behind everyday things
  • Where the credit is still disputed

The categories

3 categories sort the 126 cards. You can filter by category and take on what is due right now.

  1. In which year
  2. What they invented
  3. Who did it

What you get

Here are three of the 126 cards that are in this deck.

  1. Question

    Who invented the printing press?

    Answer

    Johannes Gutenberg

    Note

    East Asia printed with movable type four hundred years earlier; Bi Sheng used clay around 1040.

  2. Question

    What did Johannes Gutenberg invent?

    Answer

    printing press

    Note

    East Asia printed with movable type four hundred years earlier; Bi Sheng used clay around 1040.

  3. Question

    From which year does the printing press date?

    Answer

    1450

    Note

    East Asia printed with movable type four hundred years earlier; Bi Sheng used clay around 1040.

Learning with Qardbox

You see a card, you think, you turn it over and say whether you knew it. A round asks nothing more of you, and how the app works out the next date from that is on the page about FSRS-6.

What sits comes back less often, what wobbles comes back soon. You set a daily goal, and when nothing is due the app tells you exactly that instead of inventing work for you. How a round goes is shown on the learning page.

Everything stays on your device. No account, no sign-up, no ads. After the purchase the deck sits in your library like any other subject and can be studied, reordered and extended just like your own.

What it costs, and what it doesn’t

Qardbox itself costs nothing, and it stays that way. Every function is there from the start, with no subscription, no ads and no tiers; what that rests on is on the page about what it costs.

Your own cards stay unlimited, and decks from friends or from the family you read in without a limit, from a file as well. You do not need this deck in order to learn with Qardbox.

This deck costs nothing. Its 126 cards are checked and save you the work you would otherwise have.

Common questions

Do I have to pay for Qardbox?

No. The app is free, with no subscription and no ads, and every function is there. This deck is free too; some other ready-made decks cost a little, once.

Could I make these cards myself?

Yes, without limit and for free. You can type them, import a file or take over cards from friends. This deck only saves you the work.

How many cards are in Inventions?

126 cards, sorted into 3 categories.

Do I need a connection to study?

Only to download the deck. After that it lives on your device and you study offline. There is no account, and you sign in nowhere.

Which devices does this run on?

On iPhone and iPad from iOS 26, and on Apple Watch. One purchase covers the family through Family Sharing.

Is there a Qardbox for Android?

No. Qardbox is there for iPhone, iPad and Apple Watch, not for Android and not in a browser.

Get started

Get Qardbox, look at the deck in the store and decide there. The app is free whether you take this deck or not.

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