Comparison

Terminology vs OneLook Thesaurus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Terminology

Explore the English language with this comprehensive tool. It offers dictionary and thesaurus functions, along with research capabilities to dive deeper into words and phrases. Extend its functionality with custom resources for web and app searches.

Highlights
  • Offline U.S. English dictionary
  • Synonyms, antonyms, and word relations
  • Customizable resources for web and app searches
  • Favorite and create term lists
  • Audio pronunciations
  • Wildcard and spelling suggestions
  • iCloud sync and backup
Features
Read full description

Terminology is a browser for the English language – part dictionary, part thesaurus and part research tool. Terminology makes it easy to explore words and phrases, diving down to more and less specific terms - accessing web resources and other apps for more detail and sharing. More than a dictionary, Terminology can be extended with custom resources to search the Internet and other reference apps – making it a great place to satisfy any of your curiosities. ## DICTIONARY, THESAURUS & SEARCH ## - Offline U.S. English dictionary and word reference with simple, straightforward definitions. Based on the latest version of the Open English WordNet - Definitions, synonyms, antonyms, and deeper word relations such as more and less specific words, part, part of, members, member of, pertains to, and more - Favorite and create lists of terms - Word browsing history - Add your notes to any term - Audio pronunciations - Wildcard (?,*) searching - Spelling suggestions - Fast, reliable iCloud (CloudKit) sync and backup of history, favorites, notes, and resources ## EXTENSIBLE RESOURCES ## Resources provide quick links to look up and search your terms on websites and in other apps. Ready to use resources for popular reference sites like Wikipedia, ChatGPT, Google, IMDb, and more, or create your own with simple URL templates. Get more creative with AI resources to drill down on pre-populated prompts. ## MORE FEATURES ## - Share extension lets you access Terminology from a text selection in any app - Control Center integration for quick search - Spotlight and Handoff support - Great support for Accessibility features like VoiceOver and Dynamic Text. - Shortcuts support ## TERMINOLOGY PRO ## Terminology is always free to use, but you can get more out of the app with a Terminology Pro: * Custom resources * Unlimited term lists * Unlimited notes per term Terminology Pro is a reasonable annual subscription, or a one-time lifetime unlock. ## SUBSCRIPTION DETAILS ## * Payment will be charged to your Apple account at confirmation of purchase * Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period * Automatic renewals will be charged at the same price you were initially charged for the subscription * Subscriptions can be managed or canceled by going to Account Settings on the App Store after purchase Have questions? Email support@agiletortoise.com. Terms: https://agiletortoise.com/terms Privacy Policy: https://agiletortoise.com/privacy-policy

About

OneLook Thesaurus

This app helps writers find the perfect word or phrase quickly. It offers advanced search features, custom keyboard integration, and speech input for effortless word discovery. Ideal for creative writing, word games, and expanding vocabulary.

Highlights
  • Custom keyboard integration
  • Speech input for word description
  • Synonyms, similar words, associated words
  • Rhymes, quotes, and lyrics
  • Word game helpers (crosswords, Wordle)
  • Word and Place-of-the-Day
  • Ad-free experience
Features
Read full description

Subscription required. Enjoy your first two weeks free! Internet access required. Ad-free. No trackers or personal data collection. Accelerate your search for meaning! OneLook Thesaurus helps every kind of writer find every kind of word and phrase, and the new iOS app does it faster and better than ever. Even if you’re already a fan of the free website, here are 10 reasons you’ll love this new app: * Fast interface for word lookups tailored to your iPhone, iPad, or Mac. * Custom keyboard integration so that you can use OneLook wherever you write * Speech input interface: simply describe a word out loud (“the feeling of strong desire to travel”) and get back the word you’re looking for (“wanderlust”) * Nine powerful lookups baked into one potent brainstorming tool: Besides synonyms and similar words, you’ll also find three memory-jogging features you won’t find on the website called “Associated”, “Describe”, and “Complete”; as well as rhymes, quotes, lyrics, and other niceties to spice up your poetry and prose. * Helpers for crosswords, Wordle, and other word games * Stimulating new Word-of-the-day and Place-of-the-Day features * Ad-free access to the OneLook website for finding word definitions * Use our most advanced reverse dictionary algorithms, and new sorting options, before they become available on the website * Support our ongoing development of OneLook Thesaurus Subscription required. Enjoy your first two weeks free! Internet access required. Ad-free. No trackers or personal data collection. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Terminology4 screens
OneLook Thesaurus4 screens

Verdict

The call

The clearest difference is rating: Terminology at 4.7 against OneLook Thesaurus's 3.9. Terminology also leads on review sentiment (72% vs 33%) and ratings volume (1.1K vs 21). OneLook Thesaurus's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Terminology sells 2 in-app purchases, starting at $4.99 per year and OneLook Thesaurus sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Terminology holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Terminology has 1.1K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 72% of Terminology's written reviews are positive against 33% of OneLook Thesaurus's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

Scorecard5 real differences · 5 level
Terminology versus OneLook Thesaurus: the parameters behind the verdict, then further details
ParameterTerminologyOneLook Thesaurus
PriceFreeFree
Rating4.7 (1.1K ratings) — better3.9 (21 ratings)
Positive reviews71.8% of reviews — better33.3% of reviews
Number of ratings1.1K — better21
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS18.015.0 — better
Further details — not scored
Size100 MB7 MB
Age rating4+4+
DeveloperAgile TortoiseDatamuse Corporation

Customer experience

Terminology

All ratings1,090 ratings
Positive93.7%
Neutral2.5%
Negative3.9%
Written reviews142 reviews
Positive71.8%
Neutral2.1%
Negative26.1%

OneLook Thesaurus

All ratings21 ratings
Positive71.4%
Neutral9.5%
Negative19.0%
Written reviews9 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Bugs and requests

Terminology

Reported bugs

3 issues
  • Keyboard does not always appear when tapping search
  • Crashes or freezes on some devices
  • Difficulty adjusting volume for word pronunciations

Requested features

5 requests
  • Add ability to review and manage favorite words
  • Implement quiz or flashcard features for learning new words
  • Improve keyboard integration and shortcuts
  • Add more comprehensive dictionary coverage
  • Provide option to revert to previous app version

OneLook Thesaurus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Terminology

Subscriptions1
  • Pro - Annual$4.991 Year
One-time1
  • Lifetime$19.99
2 purchases

OneLook Thesaurus

Subscriptions2
  • Standard14 Days trial$0.991 Month
  • Standard Yearly14 Days trial$9.991 Year

Questions

Is Terminology free?
Terminology is free to download, with in-app purchases available.
Is OneLook Thesaurus free?
OneLook Thesaurus is free to download, with in-app purchases available.
Which has better reviews, Terminology or OneLook Thesaurus?
Terminology is rated higher. Terminology averages 4.7 out of 5 from 1.1K ratings, while OneLook Thesaurus averages 3.9 from 21 ratings.
Do Terminology or OneLook Thesaurus have ads?
Neither Terminology nor OneLook Thesaurus shows ads.
Which is updated more often, Terminology or OneLook Thesaurus?
Terminology ships an update monthly, and OneLook Thesaurus monthly. Most recently, Terminology was updated on September 24, 2026 and OneLook Thesaurus on September 10, 2026.

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