Choosing a Wordbook: Start From Your Nearest Real Goal, One at a Time

Which one you pick is not about which wordbook is largest. It is about your nearest real goal: the exam you are about to sit, the stage your course has reached, or the everyday situations where you keep running out of words. VocaX ships a dozen or so wordbooks, ranging from a few hundred words to over ten thousand. The counts in the table below are current-build reference values and change as the wordbooks are updated. A wordbook is only a range — picking a poor fit damages nothing, and switching is always open.

This page does one thing: it helps you finish the decision. It will not tell you which exam to take, and it will not predict your score.

1. What a wordbook is: it only decides which batch you study

A wordbook is a set of words drawn up by exam, school year, or region. It decides the range you practice next. It does not change the word itself: open a word inside the IELTS wordbook and open the same word inside the CET-6 wordbook, and you see the same entry.

So choosing a wordbook is not choosing a difficulty level or a quality level — it is choosing a range. Pick well and the words you practice each day line up with what is actually in front of you. Pick off-target and the words you practiced are still yours; they are simply not the ones you need right now.

A wordbook decides range, not outcome. It says which words are in this batch; it does not promise what you will get from finishing them.

2. Three ways to choose — find yours

Almost everyone fits one of these three.

• You are sitting an exam: pick the matching wordbook directly. IELTS means the IELTS wordbook, TOEFL means the TOEFL wordbook, a postgraduate entrance exam means that one. There is no need to grind through the “largest” one first and come back around.
• You are in school: pick the wordbook for the year or course you are in now, not the one you are trying to reach. Jump a level and your daily review fills with words you cannot use yet, and practice starts feeling harder than it should.
• You are not sitting anything and have no course to follow — you just want more words: pick one of the eight shared wordbooks as your main track, then use the Scenario Library to add words by situation. The main track moves you forward; scenarios give the words somewhere to appear.

Choose by your nearest real goal, not by which wordbook is largest. The largest wordbook is usually the one you need least right now.

3. Every wordbook

What VocaX offers falls into two groups. The first group is eight shared wordbooks. They do not change with region and are visible everywhere.

The second group is seven regional course wordbooks, shown only in the region they belong to.

These seven are shown by region because courses and exams are divided by region in the first place. Region only decides which wordbooks you can see right now; it never trims what you have already studied.

4. You use one wordbook at a time, and you can switch later

You do not have to commit to one wordbook on day one. You use one at a time — a course wordbook during the day, then an exam wordbook in the evening — or drop one once the exam is behind you. Switching does not wipe what you have built: a word carries its own review rhythm regardless of which wordbook it sits in, so moving to another does not send it back to the start.

There is overlap between wordbooks, and that is deliberate — keeping them apart is what lets you read your progress per exam or per course. The overlap does not cost you practice time: a word is not scheduled twice just because it appears in two wordbooks.

Switching wordbooks is not starting over. The words you have practiced keep their own rhythm; what changes is which new words come next.

5. Whichever wordbook you pick, the main dictionary is there

A wordbook decides what you practice; the main dictionary decides what you can look up. VocaX carries 70,000 to 90,000 headwords, and it does not depend on which wordbook you chose — look up any word in the app and it goes through the same main dictionary. Picking a wordbook takes away none of your ability to look things up.

So this decision is lighter than it looks. Choosing a wordbook and starting is progress; looking words up in the main dictionary while you decide is also progress.

6. If you want to learn by situation, use the Scenario Library

If what you actually want is “how do I say this while traveling” or “how do I say this in a meeting,” a wordbook is not the smoothest way in. The Scenario Library is organized into 20 themes and 72 sub-categories: listen to a short explanation built around a word, read the transcript, then bring the words you want back into Translation, Dictation, or Speaking. It runs alongside your wordbooks — wordbooks handle range, scenarios handle context. See How Is the Scenario Library Different from a Wordbook?.

7. Limits: what this does not do

• It does not decide which exam you should take. The wordbooks are laid out in front of you by exam, course, and region. Which one you pick stays with you.
• A wordbook is not a guarantee of results. Finishing the IELTS wordbook is not the same as holding an IELTS score. It means you have met and practiced that batch of words.
• Wordbooks are not sorted by difficulty. Each one is a fixed range drawn up by exam or course, not a system that recommends based on your level. The American corpus wordbook is ordered by real usage frequency, and frequent does not mean easy. To read the level marked on an individual word, see how CEFR levels work in VocaX.
• English only. Mainland China and Hong Kong, China have course wordbooks. In other regions, the picker shows the eight shared wordbooks.

If one of the three cases above was yours, that is your answer — pick it and start. Every wordbook is open on the free tier, unlimited and with no expiry; what payment does gate is covered in What Is Free in VocaX.

Frequently asked

How many wordbooks does VocaX have?

Two groups. The first is eight shared wordbooks (IELTS / TOEFL / PTE / GRE / GMAT / SAT / BEC / American corpus), which do not change with region. The second is the course wordbooks for the region you are in, running from primary school up through the entrance exams; the count differs by region and keeps growing, so VocaX does not publish a fixed total.

Can I pick more than one, or switch later?

Yes to both, and you do not have to settle it on day one. A word shares one review rhythm across wordbooks, so switching does not send words you have already practiced back to the start.

What if I pick the wrong one — do I lose anything?

Switching wordbooks does not delete anything. A wordbook decides which new words come next; what you have already built on this device stays — each word keeps its own progress, and the running total counts words once across all wordbooks, so switching does not reset it. If the fit feels wrong, switch — and switch back whenever you like.

I am not sitting an exam and not in school. Which one should I pick?

Pick one of the eight shared wordbooks as your main track and use the Scenario Library to add words by situation. Or pick nothing yet and simply look words up in the main dictionary — it does not depend on which wordbook you chose.

Do I have to pay to use the wordbooks?

No. Every wordbook is open on the free tier, unlimited and with no expiry. What payment gates is not the wordbooks but AI translation count, weekly scenario audio and word music, and the weekly insights report.

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