About EngSandbox

Your PTE & IELTS practice companion - free, private, and always in your browser.

Boost your PTE & IELTS score with targeted practice - anytime, anywhere, on any device. EngSandbox helps you build vocabulary, improve spelling, and master academic English without creating an account or installing software.

Why Learners Choose EngSandbox

Zero friction - Start practising in 10 seconds. No sign-up, no forms, no waiting.

Works offline - Once loaded, practice on flights, commutes, or anywhere without WiFi.

Your data stays yours - Everything runs locally in your browser. We never see or store your practice data.

PTE & IELTS focused - Exercises designed specifically for the academic English skills these exams test.

Always free - No subscriptions, no paywalls, no credit card required.

How It Works

Everything runs directly in your browser - no backend servers, no AI API calls, no data collection. Your progress is stored locally using IndexedDB and SQLite WASM, so your data stays private and you can keep practising offline.

Our Mission

For many, PTE and IELTS aren't just exams - they're the gateway to studying abroad, career opportunities, or reuniting with loved ones. We know how much pressure rides on these scores, and we believe preparation should build skills that last beyond test day.

EngSandbox helps you develop real English proficiency - the kind that boosts your score and serves you in everyday conversations, academic writing, and professional settings. We're committed to keeping it free, transparent, and genuinely useful. Your success is the only metric that matters to us.

What's Inside EngSandbox

EngSandbox is not a single exercise tool; it is a complete practice environment for the academic English skills PTE and IELTS actually test. It includes:

  • Vocabulary Builder — 3,100+ academic words drawn from real PTE Fill-in-the-Blanks and Write from Dictation items, with spelling drills, audio, definitions, collocations, and word families.
  • Grammar course — four levels from Foundations to Mastery, plus a five-level Advanced Grammar writing course mapped to band 6.5–8.
  • Idiom practice — 100 essential idioms with meanings, origins, and contextual examples.
  • PTE drag-and-drop — 65+ re-order paragraph and fill-in-the-blank questions built on a structured solving framework.
  • Text-to-Speech Studio — paste any text and hear it spoken with natural AI voices, entirely in your browser.
  • Study library — in-depth articles on IELTS and PTE strategies, grammar guides, and vocabulary lists.

Every feature is free, works offline after loading, and tracks your progress privately on your own device.

How Our Content Is Created

Our exercises and study guides are built from official test formats and reputable sources such as the Academic Word List, Cambridge assessment research, and published exam materials. Each article and exercise is reviewed for accuracy and usefulness before it is published, and we update content as the tests change.

We do not sell user data, and we do not hide practice features behind paywalls. EngSandbox is supported by unobtrusive advertising so that effective practice remains accessible to everyone — no matter their budget.

Editorial Process — How We Review Articles

Every article by the EngSandbox Editorial Team follows the same human-in-the-loop process. We disclose AI assistance as secondary to human review: Assisted by AI, human reviewed + field tested.

  1. Draft from trusted sources — we start from official PTE/IELTS band descriptors, the Academic Word List (AWL), Cambridge assessment research and published exam materials. Claims cite real studies and sources where relevant; we do not hallucinate citations.
  2. Human review & edit — an editor experienced in PTE/IELTS tutoring checks facts, example sentences and strategies against scoring guides, removes generic AI phrasing, adds tables, FAQs, collocation notes and 2–3 internal links, and verifies word count and reading time.
  3. Field test & update — we test exercises and strategies with learners, collect feedback, and update the article. Each article footer shows the byline and Last updated date; material corrections are made within 7 days of a report via contact.

Who is the Editorial Team? We are a small remote team of English tutors and product builders focused on PTE/IELTS practice. Rather than a single byline with unverifiable credentials, we publish as a team so every article reflects collective review. For questions about an article or to request a correction, please contact us — we aim to reply within 2–3 business days.

Articles display author name EngSandbox Editorial Team linked here via /about#editorial-process. AI assistance is disclosed in the author bio; the substantive expertise and final accountability are human.

Our Quality Standards

Accuracy: Grammar rules and exam strategies are fact-checked against official band descriptors and scoring guides.

Relevance: Every word list and exercise targets language that genuinely appears in PTE and IELTS tests.

Transparency: We are open about how the site works and how we use your data — see our Privacy Policy and Terms of Service.

Who EngSandbox Is For

PTE test takers practising vocabulary and listening, IELTS candidates building academic vocabulary and grammar accuracy, and general learners who want to improve their English at their own pace. The content spans beginner (A1) to advanced (C1) levels, so there is material for every stage of your journey.

Questions or Feedback?

We'd love to hear from you. Reach out through our contact page with questions, suggestions, or corrections — we read every message and aim to respond within 2–3 business days.