Your safe space to practise English and ace your test
Interactive vocabulary and grammar practice with text-to-speech audio, hints, and progress tracking. Built for PTE and IELTS prep — entirely free, always in your browser.
ubiquitous
/juːˈbɪkwɪtəs/ · adjective
Smartphones have become ___ in modern life.
Type the word from memory:
774
Grammar exercises
102
Idiom units
B1–C1
Difficulty range
100%
Free, forever
“English practice should be accessible to everyone — not locked behind expensive subscriptions.”
4
Difficulty levels per unit28
Advanced grammar chapters65+
PTE drag-and-drop questions2
Exam formats — PTE & IELTSEverything you need to prepare
Nine practical tools designed to help you master grammar, build vocabulary, learn idioms, track your progress, improve pronunciation and reading, practice PTE re-ordering, and fill in the blanks.
How it works
Three simple steps to start improving your English today.
01
Choose an exercise
Pick from vocabulary drills, grammar exercises, or text-to-speech — no sign-up needed. Just open and start practising.
02
Practise with audio
Listen to native pronunciation, fill in blanks, and get instant feedback. Text-to-speech runs entirely in your browser.
03
Track your progress
Review your results, see accuracy by topic, and revisit weak areas. Build a habit one exercise at a time.
How our exercises are designed
Every feature in EngSandbox is built on established language acquisition research. Four principles govern how each exercise is built.
01
Tiered difficulty
Every exercise scales through four progressive difficulty levels. Beginners start with simpler word forms and context; advanced learners face rare collocations and nuanced usage.
Learners at B1 through C1 — the range tested by PTE and IELTS — all find appropriately challenging material.
02
Immediate feedback loops
When you type an answer, you see the result instantly. Correct answers reinforce the memory trace. Incorrect answers trigger a correction cycle — you see the right form and hear the pronunciation.
Type-the-word is chosen over multiple choice: it requires active production, which leads to far better retention than recognition alone.
03
Progressive hinting
Each word offers layered hints — starting with a definition, then collocations, then an example sentence. This scaffolding lets you struggle just enough to learn, without becoming frustrated.
Research on desirable difficulty shows a small amount of struggle during learning leads to dramatically better long-term retention.
04
Authentic content curation
All vocabulary comes from real PTE and IELTS practice materials and academic word lists — not made-up examples. You learn the words that actually appear on your exam.
The Academic Word List (AWL) and corpus-based frequency lists inform which words we include.
Why vocabulary practice works
Decades of cognitive science research show that deliberate vocabulary practice is one of the most effective ways to improve language proficiency. EngSandbox is designed around evidence-based learning principles so every exercise delivers maximum impact.
Spaced Repetition
200% better retention
Reviewing words at increasing intervals moves them from short-term to long-term memory. This is why EngSandbox schedules reviews automatically.
Ebbinghaus forgetting curve researchActive Recall
50% improvement in accuracy
Actively retrieving a word from memory — rather than passively re-reading — strengthens neural pathways. Every type-the-word drill forces active recall.
Karpicke & Roediger, 2008Multi-Modal Learning
75% better transfer
Combining reading, listening, and typing engages multiple memory systems. Hearing native pronunciation while seeing the word creates stronger encoding.
Paivio dual-coding theoryContextual Practice
3x more word families
Learning words with collocations, definitions, and example sentences builds richer mental connections than isolated word lists.
Nation, 2001 vocabulary acquisition researchSee what you will learn
Here is a preview of the kind of content you will encounter in EngSandbox. Grammar lessons come with clear explanations and visual diagrams. Idioms include illustrations, meanings, and real-world usage examples. Proofreading exercises train your eye to spot and fix grammar mistakes — just like the real exercises.
Live practice — no account needed
These are real proofreading exercises from EngSandbox. Click the incorrect word in each sentence to see how instant feedback, corrections, and explanations work — nothing is saved, so you can experiment freely.
Subject Pronouns & 'To Be'
In English, every sentence needs a subject and a verb. The most common verb is 'to be'. It describes who or what someone is, their age, or their feelings.
Quantifiers 1: Countable vs. Uncountable Nouns
Nouns in English are either countable or uncountable. Countable nouns are things you can count individually, like 'one apple' or 'two cars'. They have both singular and plural forms.
On the other hand
Used to introduce a contrasting point of view, fact, or argument that opposes the first one mentioned.
“The new software update will definitely streamline our weekly reporting process; on the other hand, it will require our team to undergo a mandatory two-day training session.”
Break the ice
To do or say something to relieve tension, ease awkwardness, or start a conversation, especially when meeting people for the first time.
“I was incredibly nervous on our first date, but she broke the ice right away by making a hilarious joke about how clumsy she is.”
Advanced Grammar for exam writing
A five-level course that takes IELTS and PTE writing from solid sentence-level grammar to the sophisticated structures examiners reward at band 6.5–8. Each level builds on the last — every chapter pairs explanations and model texts with hands-on exercises and a unit assessment.
Study tips that actually work
Simple, research-backed habits that accelerate vocabulary growth — and get the most from EngSandbox.
Short, frequent sessions
Study 15–20 minutes daily rather than cramming once a week. Consistent exposure keeps words active in your memory.
Space your reviews
Revisit new words after one day, then three days, then a week. EngSandbox can schedule this for you.
Test yourself actively
Don't re-read word lists. Force your brain to retrieve the word — type-the-word drills do exactly this.
Listen and repeat aloud
Hearing pronunciation and speaking it yourself creates a stronger memory trace. Use text-to-speech on every word.
Learn collocations, not just definitions
Knowing that “make a decision” is correct (not “do a decision”) matters for exams and natural speech.
Set weekly targets
Aim to learn 15–25 new words per week and revisit 50 review words. Deep knowledge beats shallow familiarity.
Built for test takers — useful for everyone
Whether you are preparing for a specific exam or just want to strengthen your English, EngSandbox adapts to your level.
PTE Test Takers
Practise the vocabulary and listening skills you need for Pearson Test of English Academic.
IELTS Candidates
Build academic vocabulary and spelling accuracy for both General and Academic IELTS.
General Learners
Anyone looking to improve their English vocabulary, spelling, and pronunciation — at their own pace.
Ready to start your practice?
No account. No credit card. No hidden limits. Just effective English vocabulary and grammar exercises to help you succeed.