American Heritage Dictionary 5
The Fifth Edition of The American Heritage® Dictionary of the English Language as a mobile app.

EN LDOCE
JA ロングマン現代英英辞典【6訂版】
The Longman Dictionary of Contemporary English (6th edition) for iPhone and iPad, a learner’s dictionary whose definitions use a core vocabulary of about 2,000 words.
| Category | English Dictionaries & Thesauri |
|---|---|
| Languages | English–English |
| Platforms | iPad/iPhone |
| Dictionary source | Longman |
| Developer | Enfour, Inc. |
The Longman Dictionary of Contemporary English (LDOCE, ロングマン現代英英辞典) is Longman’s flagship learner’s dictionary, built for advanced students of English who want to understand how the language is really used. This app edition puts the full dictionary on iPhone and iPad, together with an integrated thesaurus and collocations dictionary.
Its definitions are written using a controlled vocabulary of just 2,000 common words, so even difficult entries stay easy to understand. Examples come from the Longman Corpus Network, showing natural, real-world English rather than invented sentences, and the 3,000 most frequent words in spoken and written English are highlighted so learners know which vocabulary to prioritise. Register notes explain the differences between spoken and written usage.
Running on Enfour’s UniDict® engine, the app also links smoothly with other compatible dictionaries and apps, making it a strong hub for serious English study.
| Category | English Dictionaries & Thesauri |
|---|---|
| Languages | English–English |
| Platforms | iPad/iPhone |
| Dictionary source | Longman |
| Version | 18.0 |
| Updated | 2026-10-12 |
| Rating | 4.5 / 5 (1,209) |
| Developer | Enfour, Inc. |
The Fifth Edition of The American Heritage® Dictionary of the English Language as a mobile app.
The American Heritage® Dictionary (Fourth Edition) bundled with Roget's II: The New Thesaurus and native-speaker audio.
The American Heritage® Dictionary, Fourth Edition, with nearly 300,000 terms and tens of thousands of native-speaker audio recordings.
The American Heritage® Medical Dictionary, a medical terminology reference for students, healthcare professionals, and general readers.
A short, free call to introduce what you need and see whether we are the right fit. Tell us a good time and we will call you.
A paid 45-minute call to talk through your systems and agree what to do first.
Dictionary, language, and reference apps on the App Store, plus FrontierStack for server management on macOS.