Thai Fast Dictionary vs Dictionary and Thesaurus Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thai Fast Dictionary
Access an extensive offline dictionary with definitions and examples across multiple languages. An integrated AI chatbot offers instant assistance for clarifying terms, expanding vocabulary, and practicing pronunciation.
- Offline global standard database
- Extensive word repository
- Definitions and examples
- Integrated AI chatbot
- Instant assistance
- Pronunciation practice
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Thai Fast Dictionary is a Thai↔English dictionary built for speed. The entire dictionary lives on your device, so lookups are instant — no internet connection required. FEATURES • Instant Thai↔English word lookup, no waiting on a server • Clear definitions with parts of speech, example sentences, and synonyms • Search history and a favorites list, so you can find words you've looked up before • Two vocabulary games — Quiz and Hang Pig — to help you learn as you go • Works fully offline once installed Whether you're a Thai speaker learning English or an English speaker learning Thai, Thai Fast Dictionary keeps a complete dictionary in your pocket. Thai Fast Dictionary is free to use, supported by ads. An optional Advance Access subscription removes ads and unlocks unlimited daily lookups. Subscription terms: • Advance Access is available as a monthly or yearly auto-renewing subscription, billed to your Apple ID • Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period • Manage or cancel anytime in your Apple ID account settings • Payment is charged to your Apple ID account upon confirmation of purchase Privacy Policy: https://thaifastdict.com/privacy_policy.html Terms of Use: https://thaifastdict.com/term_of_use.html
Dictionary and Thesaurus Pro
Access a comprehensive offline dictionary and thesaurus with extensive content in multiple languages. Explore definitions, synonyms, and specialized dictionaries for various fields. Enjoy an ad-free experience with features like word games and instant lookups.
- Ad-free experience
- Offline English dictionary and thesaurus
- Offline dictionaries in 13 languages
- Offline translations to over 40 languages
- Specialty dictionaries (Medical, Legal, etc.)
- Word games and daily content
- Instant word lookup from other apps
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Get the world's most comprehensive ad-free dictionary and thesaurus with extensive offline dictionary content and synonyms. Dictionary Pro is the premium version of The Free Dictionary app, featuring: * No ads. * A comprehensive English offline dictionary and offline thesaurus. * Offline dictionaries in 13 other languages. * Offline translations of English into more than 40 languages. * Dozens of other offline translation options. Rated #1 app in the App Store in the paid reference category in 109 countries 2011–2019 (Source: http://www.appannie.com/apps/ios/app/492085918/app-ranking/#device=iphone&type=best-ranks) Plus TheFreeDictionary's classic app content: * Find every word you search for. Get results from trusted sources: Webster's Dictionary Roget's Thesaurus The American Heritage Dictionary + More than 100 dictionaries and encyclopedias from these top publishers: McGraw-Hill Houghton Mifflin HarperCollins Random House Elsevier + More! * Learn the word. Clear definitions, example sentences, etymologies, illustrations, and more. * Learn how to say it. Play audio pronunciations and hear it pronounced. * Learn something new. Word of the Day and other fresh daily content. * Find the perfect synonym fast. East-to-use Thesaurus with synonyms, antonyms, and related words. * Explore topics in-depth. Multiple specialty dictionaries and encyclopedias: Medical Legal Science Financial Idioms Acronyms and Abbreviations + More! * Watch idioms in action. View idioms videos inside the app and see idioms and slang explained. * Play word games. Spelling Bee, Hangman, and more. * Access dictionaries in 13 other languages, including: Spanish French German Italian Portuguese Russian Chinese + More! What makes Dictionary Pro the most user-friendly dictionary app? * Instantly look up words in apps or webpages! Just highlight the word you want to look up, tap "Share," then tap "More" in the bottom menu and turn on the "Define" option. You will then see a "Define" icon in the menu. Tap it to see the definition of the highlighted word! * Voice search. Just say the word to look it up. * Advanced Search options. * Look up the definition of any word on the page. Just highlight and tap "Definition." * Save bookmarks with one tap and sync them to all your devices. * Customize your homepage: Move, add, or remove articles, games, even local weather. * Jump to Definition, Thesaurus, or Translations with one button. * Navigate the app in more than a dozen languages with the multilingual interface. * Adjust font size. * Share your favorite definitions and articles via social networks, email, or text. EXCLUSIVE * Earn meals for hungry children through The Free Dictionary's partnership with the World Food Program—just by using the app! Not convinced? Read our reviews to see why our users say this is the best dictionary app they've ever used. How do we do it? Farlex is a leader in dictionary apps. We work with the best publishers to bring together trusted content in the most comprehensive, authoritative dictionary apps on the market. Find our other apps by searching "Dictionary by Farlex" in the App Store. * For app developers: The Free Dictionary app can be accessed by other apps with API calls (Contact Farlex for instructions).
Screenshots
Verdict
The clearest difference is price: Thai Fast Dictionary at Free against Dictionary and Thesaurus Pro's $9.99. Thai Fast Dictionary also leads on update cadence (every 6 weeks vs every 4 months). Dictionary and Thesaurus Pro's advantage is in-app purchases (none vs 7) and ads (none vs shown). On rating, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Thai Fast Dictionary is free to download; Dictionary and Thesaurus Pro costs $9.99 up front. Thai Fast Dictionary sells 7 in-app purchases, starting at $0.99 per month. Dictionary and Thesaurus Pro asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Thai Fast Dictionary against 4.9 for Dictionary and Thesaurus Pro. That said, the two scores are not equally well evidenced: Dictionary and Thesaurus Pro has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 60% of Thai Fast Dictionary's written reviews are positive against 87% of Dictionary and Thesaurus Pro's.
Thai Fast Dictionary ships an update every 6 weeks, Dictionary and Thesaurus Pro every 4 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.
| Parameter | Thai Fast Dictionary | Dictionary and Thesaurus Pro |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 5.0 (1 ratings) — better | 4.9 (2.6K ratings) |
| Positive reviews | 59.6% of reviews | 86.5% of reviews — better |
| Number of ratings | 1 | 2.6K — better |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #142 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 143 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | THAI FAST COMPANY LIMITED | Farlex, Inc. |
Customer experience
Thai Fast Dictionary
Dictionary and Thesaurus Pro
Bugs and requests
Thai Fast Dictionary
Not enough reviews yet to summarise bugs or requests.
Dictionary and Thesaurus Pro
Reported bugs
3 issues- Search function sometimes fails to load definitions
- Offline mode has fewer word entries than online
- Occasional sync issues between online and offline data
Requested features
4 requests- Add more language dictionaries
- Improve thesaurus with more synonyms and antonyms
- Implement flashcard or vocabulary building features
- Allow users to save custom word lists
In-app purchases
Thai Fast Dictionary
- Advance features$0.991 Month
- Offline IPA with no Ads$2.991 Year
- English meaning and samples$2.991 Year
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- Advance features$4.991 Year
- Point 1000 pts$2.99
- Point 5500 pts$12.99
- Point 12000 pts$29.99
Dictionary and Thesaurus Pro
No in-app purchases
Questions
Is Thai Fast Dictionary free?
Is Dictionary and Thesaurus Pro free?
Which has better reviews, Thai Fast Dictionary or Dictionary and Thesaurus Pro?
Do Thai Fast Dictionary or Dictionary and Thesaurus Pro have ads?
Which is updated more often, Thai Fast Dictionary or Dictionary and Thesaurus Pro?
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