Learn the meaning that fits.

A focused vocabulary collection

The expanded version 1.0 includes 3,000+ distinct headwords, with reviewed English definitions and examples, three vocabulary levels, and a separate mathematics collection that includes geometry. It also includes 10 original text-completion exercises and 10 original sentence-equivalence exercises.

A headword is one distinct entry, such as sanction. Several meanings under that entry count as separate senses. The collection combines original editorial content with selected licensed Open English WordNet 2025 definitions and examples. Source credits are available in each entry and in Settings. These are selected learning collections, not exhaustive lists of exam vocabulary. Exercises are independently written and are not official test questions.

1. Read the short first-run guide and tap Begin.
2. On Today, start with Quiz. It offers new and familiar words immediately.
3. Use Browse if you would rather begin with a word or topic of your choice. Opening an entry records it as studied.
4. After you have studied words, tap Review to choose random or scheduled review.

Find a word and understand it

Open Browse and search for a word or a meaning. Use the category and difficulty controls to narrow the collection, and clear the filters when you want to see everything again. Open an entry to read its part of speech, English definition, and example for each included sense. Opening an entry records that word as studied.

Look beyond a familiar everyday meaning. Sanction can refer to approval or a penalty, depending on the context. Read the whole example, identify any contrast, and notice whether the writer sounds approving, doubtful, or critical.

Use the visible favorite and known controls on the detail screen. Favorites organize your study; they do not automatically mean that a word has been learned. Known words also qualify as studied. Resume on Today returns to the most recently opened entry.

Review randomly or follow your schedule

Open Today → Review. Random practices only words you previously studied in the selected scope, in a shuffled session. Scheduled shows studied words that are due, plus studied words that have no schedule yet; words marked Known qualify as studied. New session starts a fresh order. If you have not studied any words yet, Review shows 0 words and stays unavailable: use Quiz or Browse first.

Select All vocabulary, Level 1 · Foundation, Level 2 · Core, Level 3 · Advanced, or Math terms. Math terms are separate from the three general vocabulary levels. A word with both a general and a mathematical meaning shows only the senses that match your chosen scope. Levels are editorial study groupings, not official exam score bands.

On a review card, try to explain the word before tapping Show answer. Read every sense and example included in your chosen scope; scroll if the card is long. Choose the rating that describes your recall:

• Again: you could not recall the meaning. The word returns soon and is treated as needing more learning.
• Hard: you remembered with difficulty. The next interval is cautious.
• Good: you recalled it correctly. The interval grows with successful reviews.
• Easy: you recalled it readily. The interval grows more quickly.

The next due time also depends on earlier reviews. You can leave a session at any point; completed ratings are saved as you go. Check Progress for known words, favorites, scheduled reviews, and mistakes to revisit. These are learning records, not predicted exam scores.

Quiz a level or your mathematics vocabulary

Open Today → Quiz, choose a level or Math terms, and start a session of up to 20 questions using new and familiar words. Each question gives a word in context and four choices. Choose the matching meaning, then tap Check answer. Checking the answer records only that question’s target word as studied; it does not record an unanswered next question or any distractor. Quiz is separate from Applied practice.

Use context and compare meanings

Open Today → Applied practice. Read the complete context and prompt, select your answer, then tap Check answer. Checking the answer records the exercise’s word as studied. Read the explanation even when you answered correctly, and use Next to continue.

Text completion has one best answer. Sentence equivalence requires exactly two choices that fit the sentence and produce equivalent meanings. Tap a selected choice again to deselect it before choosing another. Two words that are synonyms elsewhere may still be wrong in this context.

Revisit missed questions from Lists → Mistakes. Read the context, try another answer, and check the correct choices and explanation. Correct retries remove that question from the active mistakes list.

Keep your own study lists

In Lists, open New list, enter a name, and tap Add. On a word’s detail screen, use its list menu to add that entry. A word can belong to more than one list.

Swipe a list to rename or delete it, or swipe a word in a custom list to remove it. Removing a list entry does not delete the bundled word or its learning history. Favorites, Known, and Mistakes provide built-in ways to revisit entries.

Add a term stores your own word and definition in My terms. These personal notes are separate from the reviewed collection and its scheduled review cards. You can listen to a personal term or delete it from My terms.

Listen in English

Use Listen to word or the example’s speech button. Tap the visible stop control to end playback. In Settings → English speech, choose the U.S. or British English preference and adjust Speed.

Available voices depend on your device. If the preferred English voice is missing, the app tries another installed English voice; only English voices are used. Definitions and examples work offline. Speech works offline when an English system voice is installed. See pronunciation troubleshooting if you hear nothing.

Mac controls

On Mac, use the Study menu or press Command–1 through Command–5 to switch among Today, Browse, Lists, Progress, and Settings. Press Command–period to stop speech.

In Lists, open the … actions menu beside a list to rename or delete that list. Use the Delete button beside a personal term to remove it. In a custom list, use Remove beside a word to remove it from that list.

To move progress manually, choose Settings → Export progress and save the backup file. Move it yourself with Finder, Files, AirDrop, or another location you control. In the same Wordbook product on the other device, choose Settings → Import progress and review the preview before replacing its active profile. Progress stays on the device; automatic synchronization is not provided.

Back up, restore, and change devices

In Settings → Appearance, choose System, Light, or Dark. Your choice is kept when you next open the app.

1. On the old device, open Settings → Export progress and save the JSON backup with the system file picker.
2. Copy that file to the new device using a destination you control, such as Files or AirDrop.
3. Install the same Wordbook product. Open Settings → Import progress and select the backup.
4. Check the preview, then choose Replace progress only if you want to replace that device’s active profile. Cancel leaves it unchanged.

Each product accepts its own supported backup format. GMAT and GRE app backups are not interchangeable, and old Wordbook app data is not imported by this flow. A recovery copy of the current local file is kept before replacement. The apps do not provide automatic synchronization, and exporting does not automatically keep the copy up to date.

Reset progress asks for confirmation and clears the active profile, including studied-word history, favorites, lists, and personal terms. Export first if you want a copy. Files you already exported and device-level backups are managed separately. See the Privacy Policy and Support page for details.