| Feature | | Official LDOCE Online | Official App (Paid) | Free Online Version (LDOCE) | | :--- | :--- | :--- | :--- | :--- | | Cost | Free (illegal) | Subscription-based (often with print book purchase) | One-time purchase (e.g., $9.99 USD) | Free (ad-supported) | | Legality | Illegal (Copyright Infringement) | Fully Legal | Fully Legal | Fully Legal | | Content | Inconsistent quality; potentially outdated or incomplete scans | Full 6th edition content, regularly updated | Full 6th edition content, with updates | Abridged (fewer examples, no pronunciation for all) | | Audio | Often missing or broken | Full audio for all headwords and examples (88k+) | Full audio for all headwords and examples | Limited audio | | Extra Features | None | Integrated thesaurus, collocations, grammar exercises | Integrated thesaurus, collocations, vocabulary checker | Basic search; definitions | | Search | Basic (text-based) | Advanced, with wildcard and phrase search | Advanced search; offline word lookup | Basic online search | | Reliability | Low (links break, sites go down) | High (stable, professional service) | Very High (works offline on your device) | High (always online, free) | | Ethics | Unethical (doesn't support creators) | Ethical (supports ongoing development) | Ethical (supports ongoing development) | Ethical (uses official ad-supported version) |
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