Vocabulary Trainer

The vocabulary trainer helps you learn knowledge sustainably — with intelligent repetition that adapts to your learning progress.

Deck types

There are two types of decks:

  • Vocabulary — For language learning with source and target language. Cards additionally show pronunciation and example sentences.
  • Freeform (Question & Answer) — For any learning content: definitions, facts, formulas, or any kind of question-answer pair.

Creating a deck

Click New Deck and enter a name. Choose the type:

  • For Vocabulary, additionally enter the source language (e.g. en) and target language (e.g. de).
  • For Freeform, no languages are needed.

Adding cards

Open a deck and click Add card. Enter the front (question/word) and back (answer/translation). For vocabulary decks, you can optionally add pronunciation and an example sentence.

Study session

Click Study on a deck. You will be shown cards that are due today:

  1. You see the front side (with pronunciation for vocabulary).
  2. Click Reveal to see the answer.
  3. Rate how well you knew the card.
The progress indicator shows how many cards remain.

Rating system

After revealing, rate your knowledge with four buttons:

  • Again — You didn't know it. The card will be shown again soon.
  • Hard — You knew it, but it was difficult. Shorter interval.
  • Good — Normal effort. Standard interval.
  • Easy — Instantly knew it. Longer interval.
Below each button you can see when the card will be shown next.

When in doubt, choose 'Good' — the system adapts automatically to your learning progress.

Spaced Repetition

Brainsparkle uses the SM-2 algorithm. Cards you know well are repeated at increasing intervals (1 day → 3 days → 7 days → ...). Cards you find difficult are shown more frequently. This way you learn efficiently and forget less.

AI card generation

With a Premium subscription, you can have flashcards automatically generated from your notes. Open a note, click the flashcard icon, and choose a target deck. The AI analyses the content and creates matching cards.

AI card generation is only available with a Premium subscription.

Tips for effective learning

  • Study every day — even short sessions of 5 minutes help.
  • Rate honestly — this allows the system to optimally adjust the intervals.
  • Create your own cards — self-formulated content is easier to remember.
  • Use example sentences — they help you learn words in context.