Dictionary. vs Metric Conversion tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dictionary.
Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.
- Offline dictionary and thesaurus
- Millions of definitions and synonyms
- Word of the Day and Idiom of the Day
- Specialty dictionaries (medical, legal, etc.)
- Translations into 40+ languages
- Word games (Spelling Bee, Hangman)
- In-app word lookup via sharing
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The only Dictionary and Thesaurus with every word you search for. Plus Word of the Day, free offline dictionary access, and millions of definitions and synonyms from top sources, including: Webster's Dictionary Roget's Thesaurus The American Heritage Dictionary Plus FREE access to: English Offline Dictionary English Offline Thesaurus with synonyms and more Medical Dictionary English Idioms and Slang Dictionary Translations of English into 40+ languages Dozens of other translation options + Much more! The Free Dictionary is like getting 100+ apps in one easy-to-use interface. Rated #1 app in the App Store in the free reference category in 114 countries 2011–2019. (Source: https://www.appannie.com/apps/ios/app/379450383/app-ranking/#device=ipad&type=best-ranks) Here's what you can do with The Free Dictionary app: * Find every word you search for. Clear, accurate definitions from top dictionaries—online and offline. * Find synonyms fast. Free Thesaurus with simple interface makes it easy to find the perfect word. Browse synonyms, antonyms, and related words. * Learn something new every day. Word of the Day Idiom of the Day + Other daily content * Build your vocabulary. Don't just look up words—learn how to use them! Featuring: Audio pronunciations Example sentences Etymologies + More! The perfect dictionary app for word lovers and learners of all levels. * Explore topics in-depth. Multiple specialty dictionaries and encyclopedias: Medical dictionary Legal dictionary Science dictionary Financial dictionary Idioms and Slang dictionary Acronyms and Abbreviations + More! * Play word games. Spelling Bee, Hangman, and more. * See idioms in action. Watch idioms videos inside the app! Featuring animations of words and phrases from the idioms and slang dictionary. * Access dictionaries in 13 other languages. Spanish dictionary and thesaurus French dictionary and thesaurus German dictionary and thesaurus + Italian, Portuguese, Russian, Chinese, and more! * Translate English into Spanish, French, and 40+ languages. Or translate other languages into English. Access dozens of other translation options. * Access dictionaries and encyclopedias from these top publishers with just one search: McGraw-Hill Houghton Mifflin HarperCollins Random House Cambridge University Press + More! Here's why The Free Dictionary is 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. Look up a word just by saying it. * 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 words 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! This is not a trial version—you get everything free and forever. Additional offline dictionaries in other languages are available in the Pro version. Seem too good to be true? The Free Dictionary app has been downloaded tens of millions times across multiple platforms, with top ratings after hundreds of thousands of reviews. Read reviews from real users to see why they say The Free Dictionary is the best dictionary app they've ever used. * For app developers: The Free Dictionary app can be accessed by other apps with API calls (Contact Farlex for instructions).
Metric Conversion tool
This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.
- Offline functionality
- Over 30,000 unit conversions
- 160+ currencies with live rates
- Save favorite conversions
- Answers in fractions
- Up to 5 decimal places
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Unit converter App from the most popular metric conversions website in the world, metric-conversions.org. Over a billion visitors have used our website, try our app and see why we're so popular! FEATURES: Easy to use clear interface Works offline All popular unit conversions (over 30,000 of them) Over 160 currencies (including Bitcoin and other cryptocurrencies) with live exchange rates Store your favorite conversions for quick access Answers in fractions where needed. Obtain conversion results with up to 5 decimal places Imperial units split into other imperial units – so you can get a weight in stones and pounds, pounds and ounces, etc. Lengths break down into feet and inches, etc. WEIGHT: Kilograms, Pounds, Stones, Ounces, Grams, Carats, Grains, Hundredweights, Micrograms.Milligrams, Ounces, Pennyweights, Tons, Troy pounds, Troy ounces TEMPERATURE: Celsius, Fahrenheit, Kelvin, Rankine, Newton, Réaumur, Rømer, Delisle. LENGTH: Miles, Yards, Feet, Inches, Kilometers, Meters, Centimeters, Chains, Decimeters, Furlongs, Leagues, Lightyears, Microinches, Microns, Millimeters, Parsecs, Nautical Leagues, Nautical Miles. AREA: Square Miles, Acres, Square Yards, Square Feet, Square Inches, Square Kilometers, Hectares, Square Meters, Square Centimeters, Square Millimeters, Square Microns, Square Microinches. VOLUME: Cups, Tablespoons, Teaspoons, Gallons, Pints, Gills, Ounces , Cubic Meters, Liters, Centiliters, Milliliters, Cubic Yards, Barrels, Quarts, Gills. SPEED: Miles per hour, Kilometers per hour, Meters per second, Knots, Mach, Light speed and more. TIME: Seconds, Minutes, Hours, Days. ANGLE: Degrees, Radians, Minutes (Angular), Seconds (Angular), Centrad, Gradians, Milliradians, Sign PRESSURE: Atmospheres, Bar, Pascals, Pound Force per Square Inch, Inches of Mercury, Inches of Water, Kilogram Force per Square Meter, Millibar, Millimeters of Mercury, Millimeters of Water, Newtons per Meter Squared, Pounds per Square Foot, Torrs CURRENCY: All state sponsored world currencies as well as major crypto-currencies. If you need anything added, email us at appcontact@metric-conversions.org and we'll do our best to put them in for you!
Screenshots
Verdict
The clearest difference is in-app purchases: Metric Conversion tool at none against Dictionary.'s 1. Metric Conversion tool also leads on update cadence (fortnightly vs every 3 months). Dictionary.'s advantage is review sentiment (91% vs 70%) and iOS requirement (13.0 vs 15.1). On price, rating, ratings volume and ads 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
Both are free to download. Dictionary. sells 1 one-off in-app purchase. Metric Conversion tool asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Dictionary. against 4.8 for Metric Conversion tool. Both are backed by a comparable volume of ratings — 15K and 15K respectively. Written reviews are what separate them: 91% of Dictionary.'s written reviews are positive against 70% of Metric Conversion tool's.
Dictionary. ships an update every 3 months, Metric Conversion tool fortnightly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.
| Parameter | Dictionary. | Metric Conversion tool |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (15K ratings) | 4.8 (15K ratings) |
| Positive reviews | 90.7% of reviews — better | 70.2% of reviews |
| Number of ratings | 15K | 15K — better |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 25 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Farlex, Inc. | Wight Hat |
Customer experience
Dictionary.
Metric Conversion tool
User reviews
Dictionary.
From 15K App Store ratingsWhat we love
- 🚀 Comprehensive and detailed definitions
- 👍 Helpful thesaurus and translation features
- 🎮 Fun word games and activities
- 📚 Vast amount of information beyond just definitions
- 🔍 Easy to use and navigate
Room to improve
- 🔍 Cluttered interface with too many ads
- 🐛 Occasional crashes and bugs
- 🔍 Difficulty finding specific settings or features
- 🔋 Drains battery life quickly
Metric Conversion tool
From 15K App Store ratingsWhat we love
- 💡 Useful conversion tool
- 👍 Easy to use and navigate
- 🚀 Quick and efficient
- 👍 Comprehensive coverage of conversions
Room to improve
- 🔊 Intrusive and loud ads
- 🔒 Questionable privacy practices
- 🐛 Inaccurate conversions
- 👎 Disruptive to workflow
Bugs and requests
Dictionary.
Reported bugs
3 issues- Frequent login issues and lost user data
- Inconsistent performance across devices
- Incorrect or missing definitions for some words
Requested features
4 requests- Ability to create and organize custom word lists
- More advanced vocabulary-building tools
- Improved audio pronunciation quality
- Offline access to full dictionary content
Metric Conversion tool
Reported bugs
2 issues- Temperature conversion displaying incorrect values
- Ads triggering false memory full warnings
Requested features
3 requests- Paid version to remove ads
- Option to display results in preferred format
- Speed conversion (mph, km/h, etc.)
In-app purchases
Dictionary.
- Ad-free upgrade$5.99
Metric Conversion tool
No in-app purchases
Questions
Is Dictionary. free?
Is Metric Conversion tool free?
Which has better reviews, Dictionary. or Metric Conversion tool?
Do Dictionary. or Metric Conversion tool have ads?
Which is updated more often, Dictionary. or Metric Conversion tool?
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