Best Apps to Improve English Vocabulary (2026): 6 Apps Tested

Why Vocabulary Apps Work (and When They Don't)

Vocabulary apps are effective because they use a simple scientific principle: spaced repetition. Your brain forgets information on a predictable curve. Spaced repetition shows you a word just before you are about to forget it, which tells your brain "this is important, keep it." This technique can boost retention by 50% or more compared to cramming.

But here is the catch. Many learners fall into the trap of "collecting words." They swipe through flashcards, hit "Got it" on words they barely know, and end up with 2,000 saved words and 200 actually remembered. Apps are tools, not teachers. A vocabulary app can introduce you to new words and help you review them, but it cannot teach you how to use those words in real conversation.

The best approach: use an app as your memory system, not your only study method. Pair it with speaking practice on iTalki or Preply, read articles, and write sentences with new words. Apps handle the repetition. You handle the activation.

How We Tested These Apps

We evaluated each app on eight criteria:

• Learning methodology. Does it use spaced repetition? Gamification? Active recall?
• Word quality. Are the words useful for learners, or random and obscure?
• Pronunciation audio. Native speaker recordings or text-to-speech?
• CEFR alignment. Can you learn words at your level (A1 through C2)?
• Offline mode. Can you study without internet?
• Free tier quality. Is the free version actually useful, or is it just a preview?
• User experience. Is it easy to use every day?
• Value for money. Does the paid version offer real benefits?

1. Anki. Best for Serious Self-Study and Custom Decks

Anki is the gold standard of spaced repetition software. It has been around for over a decade, and it remains the most scientifically rigorous flashcard app available. If you want maximum retention efficiency, this is the app.

The key feature is full customization. You can create your own decks with exactly the words you want to learn, add images, audio, and even custom card layouts. There are over 10,000 shared decks created by the community, including decks for IELTS vocabulary, TOEFL words, phrasal verbs, idioms, and CEFR-level word lists.

Strengths: Scientifically proven retention rates. Completely free on Android, Windows, Mac, and Linux. The spaced repetition algorithm is the most advanced of any app on this list. You control every detail of your learning.

Weaknesses: The learning curve is steep. New users often struggle with setup. The interface looks like a medical textbook from 2005. There is no gamification, no streaks, no rewards. Anki rewards discipline, not engagement.

Best for: Learners who are serious about vocabulary growth and willing to invest time in setup. If you have a specific word list (your textbook, a course, an exam syllabus), Anki is the best way to memorize it.

Price: Free on Android ($25 one-time on iOS). Desktop versions are free.

2. Quizlet. Best for Course-Specific Vocabulary

Quizlet started as a simple flashcard app and has grown into a full study platform. It offers flashcards, matching games, multiple-choice tests, and a "Learn" mode that adapts to your progress.

What makes Quizlet great for English learners is the sheer volume of pre-made sets. Search for "IELTS vocabulary" and you will find hundreds of sets created by teachers and students. The same goes for TOEFL, business English, phrasal verbs, idioms, and specific textbooks. If you are following a structured course, someone has probably already made a Quizlet set for it.

Strengths: Excellent for test preparation. The matching game and test mode make review less boring. Quizlet Live lets you study in groups, which is useful for classroom settings or study buddies.

Weaknesses: The spaced repetition is basic. Quizlet does not use true SRS like Anki. It shows you cards you got wrong more often, but the algorithm is not as precise. Quality of user-created sets varies widely. Some sets have wrong definitions or bad example sentences.

Best for: Students who need to learn specific vocabulary for a course or exam. If you are taking an IELTS preparation class or using a specific textbook, Quizlet is your best companion.

Price: Free basic tier. Quizlet Plus is $36/year and removes ads, adds offline access, and unlocks advanced study modes.

3. Memrise. Best for Contextual Vocabulary

Memrise combines spaced repetition with real video clips of native speakers pronouncing words in context. This "Learn with Locals" feature is unique. Instead of hearing robotic text-to-speech, you hear actual people from different regions using the word naturally.

Memrise also uses "Mems" (mnemonic devices) to help you remember words. These are user-created memory tricks like word associations or funny images. For example, to remember the word "ubiquitous" (meaning everywhere), a Mem might show a picture of a taxi in every street with the caption "U-biq-uitous, like Uber everywhere."

Strengths: Official CEFR-graded courses (A1 through C1). The video clips give you real pronunciation and cultural context. The SRS is solid. The app is well-designed and engaging.

Weaknesses: The free tier is limited. You can only access a small number of lessons before hitting the paywall. Some users find the gamification a bit much (points, levels, leaderboards).

Best for: Learners who want authentic pronunciation and cultural context. If you struggle with text-to-speech voices and want to hear how words actually sound, Memrise is the best choice.

Price: Free (limited). Pro is $15/month or about $90/year.

4. Drops. Best for Quick Daily Sessions

Drops takes a different approach. Each session is exactly 5 minutes. No more, no less. You swipe through beautiful visual flashcards, matching words to images. There is no text in your native language, which forces your brain to connect the English word directly to the image.

This visual-first approach works well for building your first 500 to 1,000 words. The app covers 45+ language pairs and organizes vocabulary by topic (food, travel, business, nature, etc.).

Strengths: Extremely low barrier to start. Five minutes is easy to fit into any routine. The visual design is beautiful and engaging. No translation dependency helps with direct word association.

Weaknesses: Vocabulary stays at a basic level. You will not find advanced or academic words here. There is no grammar context, so you learn words in isolation. The 5-minute limit, while great for habit building, limits how much you can learn each day.

Best for: Absolute beginners who want to build their first words without feeling overwhelmed. Also great for visual learners who struggle with text-heavy apps.

Price: Free (5 minutes per day). Premium is $13/month for unlimited time and full topic access.

Advertisement

5. Magoosh Vocabulary Builder. Best for Test Prep

Magoosh is best known for its test prep courses, but their free Vocabulary Builder app is a hidden gem for English learners. It contains over 1,200 words organized by difficulty, with example sentences, audio pronunciation, and a built-in spaced repetition system.

The words are carefully selected from high-frequency academic word lists. These are the words you actually see in TOEFL reading passages, IELTS essays, and academic journals. If your goal is academic English, this app targets exactly the vocabulary you need.

Strengths: High-quality word selection focused on academic and test vocabulary. The entire vocabulary builder is free. Example sentences are clear and useful. The quiz mode is engaging.

Weaknesses: Narrow focus. If you want everyday conversational vocabulary, this is not the right app. The vocabulary is also US English. No content for beginner levels.

Best for: Learners preparing for English proficiency tests (TOEFL, IELTS) or studying in an academic environment. Also excellent for advanced learners who want to improve their academic vocabulary.

Price: Free. No premium version. (Magoosh makes money from test prep courses.)

6. WordUp. Best for Personalized Learning (AI-Powered)

WordUp is the newest app on this list, and it takes a modern approach. When you first open the app, it tests your vocabulary level using an AI algorithm. Then it serves you words you do not know yet, ranked by how useful they are for your level and interests.

The standout feature is real-world examples. Instead of made-up sentences, WordUp pulls examples from movies, news articles, speeches, and books. You see how the word is actually used in the wild. The app also shows you the word's frequency (how common it is), its difficulty level, and related words.

Strengths: The adaptive algorithm is impressive. It finds gaps in your vocabulary and fills them. Real-world examples from authentic media. The app design is modern and engaging.

Weaknesses: WordUp is still new, so the vocabulary database is smaller than Anki or Quizlet. The free tier limits how many words you can learn per day. Some example sentences are pulled from obscure sources.

Best for: Intermediate learners (B1-B2) who want a personalized study plan. If you know basic English but want to expand your vocabulary efficiently, WordUp's adaptive approach can save you time.

Price: Free (limited daily words). Premium is about $10/month for unlimited learning.

How Many Words Can You Learn Per Day?

Let us give you realistic numbers. With proper spaced repetition, most learners can retain 5 to 10 new words per day. That does not sound like much. But 10 words per day is 3,650 words in a year. An educated native English speaker uses about 20,000 words. In three years, you can cover most of the vocabulary you need for fluency.

More important than daily count is consistency. Five words every day for a year beats 50 words once a week. Do not try to learn 50 words in a day. You will forget most of them, and you will burn out.

Many advanced learners combine apps. They use Anki for daily SRS review, Memrise for contextual exposure, and speaking practice on iTalki to activate words in conversation. Each app fills a different role.

Which App Is Best for You?

Here is a quick decision guide based on your learning style:

Vocabulary Learning Strategy: The 3-Stage Method

Most vocabulary articles just recommend apps. We want to give you something more useful: a complete learning strategy. Here is the three-stage method we recommend to all LearnEnglish.Life readers.

This three-stage method is what separates learners who grow their vocabulary from learners who just collect words. Discovery without memorization is entertainment. Memorization without activation is a waste. You need all three stages for real vocabulary growth.

For more on activating your vocabulary, read our guide on how to improve English speaking alone.

Frequently Asked Questions

Start Building Your Vocabulary Today

Vocabulary is the foundation of language learning. No grammar, no pronunciation, and no fluency matters if you do not have the words to express your thoughts. These six apps give you everything you need to build a strong vocabulary, from basic daily practice to advanced academic preparation.

Start with one app. Use it every day for two weeks. Then add a second app for a different purpose. And remember the three stages: discover, memorize, activate. That is the formula that works.

If you want to explore more learning tools, check out our full comparison of the best language learning apps and our guide to free English learning apps.

For related vocabulary resources, see our common phrasal verbs list.