What is Vocabulary Builder?

Vocabulary Builder lets you create word lists with definitions and quiz yourself with flashcards. Your progress saves between sessions, so you can pick up where you left off.

Each entry holds a word, its definition, and an optional example sentence, and they live in your device's local storage rather than a remote database. Practice has three modes: flip flashcards to check the meaning, type the definition from memory for active recall, or take a multiple-choice quiz that pulls wrong answers from your other words. Words you mark Needs Review come back later in the same session, and a summary at the end shows how many you mastered versus still need to review. Turn on Focus mode to drill only the words still marked Needs Review, then mark each one mastered or needs-review so the tracker reflects what you actually know. Export to CSV when you want to back up or move the list.

How to use

1. Step 1 — Add words with their definitions and optional example sentences to your list.
2. Step 2 — Enter practice mode to review words as flashcards — guess the definition, then flip to check.
3. Step 3 — Track which words you've mastered and which need more review.

When to use

• Studying GRE, IELTS, or TOEFL word lists with flashcards, typing recall, or a quick multiple-choice quiz.
• Collecting terminology from a textbook or course so it sticks instead of staying in highlighter.
• Saving useful vocabulary from foreign-language reading and reviewing it in spaced sessions.

Result

A GRE student adds 'ubiquitous' with definition 'present everywhere' and example 'Smartphones are ubiquitous in modern life.' After reviewing 30 cards, the tracker shows 22 mastered and 8 needing more practice.

FAQ

Where is my word list stored — can I lose it?

The list lives in your device's localStorage. Clearing browser data or using private mode wipes it. Export to CSV after each study session if you want a backup that survives a cache clear or a switch to another device.

How do I move my words to a different device?

Use Export CSV on the source device, transfer the file (cloud drive, email, USB), then import it on the destination — or paste each entry back through the add form. There is no account sync, so the CSV is the bridge.

What counts as mastered versus needs review?

You decide on each flip. If the definition felt natural and you would explain it without hesitation, mark mastered. If you had to think, mark needs-review — then switch on Focus mode to drill just those words on your next pass.

Can I add the same word with two definitions?

Yes. Each entry has its own row in the list, so you can store, say, the noun and verb senses of run as two cards. Different example sentences help the meanings stay distinct during practice.

Does practice mode use spaced repetition?

Not in the classic Anki sense — there is no date-based scheduling across days. Within a single session, though, any word you mark Needs Review is re-inserted and shown again, so weak words get a second pass while mastered ones drop out. Focus mode goes further and drills only the words you have marked Needs Review until they stick.

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