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Head-to-head · Online Dictionaries

The Free Dictionary vs American Heritage Dictionary

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score The Free Dictionary #3 in Online Dictionaries 9.2/10 Free plan Free plan✓ 4 of 4 features Visit site
American Heritage Dictionary #14 in Online Dictionaries 8.1/10 Free plan Free plan✓ 4 of 4 features Visit the dictionary

The Free Dictionary leads on 0 checks, American Heritage Dictionary on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreThe Free Dictionary · 9.2/10
  • Free planboth

The Free Dictionary scores higher on our rubric for online dictionaries: 9.2 against 8.1 out of 10; our editors rank them #3 and #14.

The Free Dictionary is the better fit for users wanting the broadest free reference set. American Heritage Dictionary is the better fit for detailed English usage and etymology.

  • The Free Dictionary fits best

    Users wanting the broadest free reference set

  • American Heritage Dictionary fits best

    Detailed English usage and etymology

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Side by side

Feature The Free Dictionary 9.2/10 Visit ↗ American Heritage Dictionary 8.1/10 Visit ↗
At a glance
Editor score 9.2 8.1
Ranking #3 in Online Dictionaries #14 in Online Dictionaries
Best for Users wanting the broadest free reference set Detailed English usage and etymology
Pricing model Free plan + paid Free plan + paid
Starting price — Free plan
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Mobile, Desktop Cloud, Mobile
Platforms Web, iOS, Android, macOS Web, iOS, Android
Features The Free Dictionary 4/4 · American Heritage Dictionary 4/4
Audio pronunciation ✓ ✓
Usage examples ✓ ✓
Translation lookup ✓ ✓
Offline access ✓ ✓
Specs
Mobile apps Ios_android Ios_android
Languages covered 14 Not checked yet
Our review
Pros
  • Dictionary, thesaurus, specialist dictionaries, and translation lookup
  • Offline access, audio pronunciations, voice search, and synchronized bookmarks
  • Available on web, iOS, Android, macOS, and through an API
  • Usage Panel guidance supports grammar and usage decisions.
  • Etymologies include Indo-European and Semitic root appendices.
  • Mobile apps offer voice, camera, audio, and offline lookup.
Cons
  • The free plan includes advertising
  • The ad-free upgrade is limited to the iOS app
  • API access is described for calls from other apps, not a broader integration suite
  • Its reference focus is English rather than broad multilingual coverage.
  • Audio and offline lookup require the full mobile version.
  • Mobile pricing and feature availability differ by store and app version.
Our verdict

The Free Dictionary is a reference service from Farlex, Inc. for looking up words, synonyms, translations, idioms, and specialist terminology. It combines dictionary and thesaurus lookup with medical, legal, science, financial, and idiom…

Read the review →

American Heritage Dictionary is an English reference dictionary for students, professionals, academics, and general readers. It provides searchable dictionary entries on the web and through iOS and Android apps, with definitions,…

Read the review →
  1. The Free DictionaryOnline Dictionaries 9.2Free plan
  2. American Heritage DictionaryOnline Dictionaries 8.1Free plan

Strengths and trade-offs

  • The Free Dictionary — where it wins

    • Dictionary, thesaurus, specialist dictionaries, and translation lookup
    • Offline access, audio pronunciations, voice search, and synchronized bookmarks
    • Available on web, iOS, Android, macOS, and through an API

    Where it doesn't

    • The free plan includes advertising
    • The ad-free upgrade is limited to the iOS app
    • API access is described for calls from other apps, not a broader integration suite
  • American Heritage Dictionary — where it wins

    • Usage Panel guidance supports grammar and usage decisions.
    • Etymologies include Indo-European and Semitic root appendices.
    • Mobile apps offer voice, camera, audio, and offline lookup.

    Where it doesn't

    • Its reference focus is English rather than broad multilingual coverage.
    • Audio and offline lookup require the full mobile version.
    • Mobile pricing and feature availability differ by store and app version.
  • The Free Dictionary9.2/10 · Free plan

    A broad free reference service with offline access, translations, and specialist dictionaries.

    Visit siteFull verdict →
  • American Heritage Dictionary8.1/10 · Free plan

    A detailed English reference for definitions, usage, etymology, and pronunciation.

    Visit the dictionaryFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update