Comparison

Plain English Dictionary vs Deep Dictionary

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

Head to head
About

Plain English Dictionary

This app provides a simple and efficient English dictionary with offline access. It features a speech function for pronunciation, word bookmarking, and extensive vocabulary with synonyms and example sentences. Customizable font settings enhance the learning experience.

Highlights
  • Offline access
  • Speech function for pronunciation
  • Bookmark words and phrases
  • Over 140,000 words and phrases
  • Synonyms and example sentences
  • Customizable font settings
Features
Read full description

Simple and efficient English dictionary for daily use and English learning. - Simple interface accessible whenever you want - Available in offline, compact storage size - Can listen to all the words and the phrases by speech function - Can bookmark words and phrases with favorite button - Over 140,000 words and phrases, 48,000 example sentences, a lot of synonyms - Phonetic symbols are available in over 34,000 words - Powered by academic databases: WordNet 3.0 for definitions, and cmudict.0.7a for phonetic symbols - Font settings can be customized Many words and phrases are with a wealth of synonyms and example sentences. Suitable for expanding your English vocabulary.

About

Deep Dictionary

Access definitions from various sources like Wikipedia and Urban Dictionary, with multilingual support and pronunciation guides. Enhance your vocabulary with synonyms, related words, and real-life usage examples.

Highlights
  • Multilingual definitions
  • Urban Dictionary slang integration
  • Wikipedia content access
  • Pronunciation guides and usage examples
  • Comprehensive thesaurus
  • Images and contextual phrases
Features
Read full description

Deep Dictionary is like Wikipedia, Urban Dictionary, Oxford English Dictionary, and Youglish all in one App! Deep Dictionary supports multiple languages! Get definitions in Japanese, Chinese, Russian, German, Spanish, and French alongside English. The best multilingual dictionary for learning and translation—perfect for English-Japanese dictionary, English-Chinese dictionary, English-Russian dictionary, English-German dictionary, English-Spanish dictionary, and English-French dictionary! With direct integration with Urban Dictionary, you'll never miss the latest slang and expressions. Our app ensures you stay updated with contemporary language trends, capturing the essence of the latest terms just like Urban Dictionary. Like YouGlish, our app offers pronunciation guides and real-life usage examples through integrated YouTube clips. Need scientific definitions? Our app connects you to comprehensive Wikipedia entries. For dictionary definitions, Deep Dictionary includes images and contextual phrases to make vocabulary building a breeze. Download now to enhance your vocabulary with the best of both traditional and contemporary language tools. Download the Deep Dictionary app for free and start your English learning right away. ## KEY FEATURES: ## Thesaurus: Deep Dictionary is more than just a dictionary—it's a comprehensive thesaurus at your fingertips. Unlike traditional thesaurus apps that focus solely on synonyms and antonyms, Deep Dictionary broadens your vocabulary with a wide range of related words that are more practical for everyday use. Whether you’re writing, studying, or simply want to expand your vocabulary, our thesaurus feature offers tools that go beyond just finding synonyms and antonyms. Discover new words and enhance your language skills with Deep Dictionary’s unique approach to the thesaurus! ## Wikipedia: Deep Dictionary includes direct references to authentic Wikipedia content, wrapped in an improved, user-friendly interface. Now you can access reliable Wikipedia information. Whether you’re a student, a professional, or simply curious, Deep Dictionary provides a seamless Wikipedia-like experience for all things related to words and their meanings. ## Reliable Sources: Looking for an alternative to Dictionary.com? Deep Dictionary provides everything you need, from detailed definitions to pronunciation guides, much like Dictionary.com. With features similar to Dictionary.com, Deep Dictionary helps you explore the English language with ease. If you love Dictionary.com, you'll find Deep Dictionary an equally valuable resource for learning and mastering English. And what's better? Deep Dictionary doesn't have Ads to interrupt your learning experience. ## Pick Up Slangs like Urban Dictionary: Stay updated with the latest trends in language. Our direct integration with Urban Dictionary ensures you’re never out of the loop with contemporary and evolving terms. When you prefer, jump over to the Urban Dictionary website to explore more with one simple tap! ## Best Youglish Alternative on iOS: iPhone users have long sought a good YouGlish substitute, and now you've found it! Deep Dictionary offers pronunciation guides and real-life usage examples. ## Academic: Inspired by the Oxford English Dictionary, Deep Dictionary offers a wealth of detailed definitions and historical contexts, just like the Oxford English Dictionary. Dive into the depths of the English language with a dictionary that mirrors the comprehensive nature of the Oxford English Dictionary. Whether you’re studying or just curious about words, our app provides the insights you need, much like the Oxford English Dictionary.

Screenshots

Plain English Dictionary4 screens
Deep Dictionary4 screens

Verdict

The call

The clearest difference is ratings volume: Deep Dictionary at 51 against Plain English Dictionary's 1. Plain English Dictionary's advantage is rating (5.0 vs 4.7) and monetization model (free vs ad-supported). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Plain English Dictionary holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Deep Dictionary has 51 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Plain English Dictionary versus Deep Dictionary: the parameters behind the verdict, then further details
ParameterPlain English DictionaryDeep Dictionary
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (51 ratings)
Positive reviews—77.8% of reviews
Number of ratings151 — better
Update frequencyWeeklyWeekly
AdsYesYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size41 MB14 MB
Age rating9+12+
DeveloperDaigo HamasakiDEEPCO

Customer experience

Plain English Dictionary

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Deep Dictionary

All ratings51 ratings
Positive92.2%
Neutral3.9%
Negative3.9%
Written reviews9 reviews
Positive77.8%
Neutral0.0%
Negative22.2%

In-app purchases

None

Plain English Dictionary

No in-app purchases

None

Deep Dictionary

No in-app purchases

Questions

Is Plain English Dictionary free?
Plain English Dictionary is free to download, with no in-app purchases.
Is Deep Dictionary free?
Deep Dictionary is free to download, with no in-app purchases.
Which has better reviews, Plain English Dictionary or Deep Dictionary?
Plain English Dictionary is rated higher. Plain English Dictionary averages 5.0 out of 5 from 1 ratings, while Deep Dictionary averages 4.7 from 51 ratings.
Do Plain English Dictionary or Deep Dictionary have ads?
Both Plain English Dictionary and Deep Dictionary show ads.
Which is updated more often, Plain English Dictionary or Deep Dictionary?
Plain English Dictionary ships an update weekly, and Deep Dictionary weekly. Most recently, Plain English Dictionary was updated on October 6, 2026 and Deep Dictionary on October 5, 2026.

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