Deep Dictionary vs Omnipedia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Multilingual definitions
- Urban Dictionary slang integration
- Wikipedia content access
- Pronunciation guides and usage examples
- Comprehensive thesaurus
- Images and contextual phrases
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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.
Omnipedia
Access a vast offline encyclopedia, even without internet. This app provides fast, private access to millions of articles, with monthly updates and personalized recommendations. Enjoy a clean interface, customizable appearance, and on-device AI for quick answers.
- Offline Wikipedia access
- Lightning-fast search
- On-device AI for answers
- Bookmarks and history
- Customizable appearance
- Monthly incremental updates
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Omnipedia gives you all the power of Wikipedia — anytime, anywhere, even without an internet connection. Whether you’re traveling abroad, hiking up a mountain, or in a basement bar with no Wi-Fi, Omnipedia is ready with the information you’re looking for. To make this possible, we compress millions of Wikipedia articles into a compact archive that fits comfortably on your device. A complete library requires between 1 and 12 GB (depending on the language), and to keep it up-to-date, we provide monthly incremental updates that install in minutes. Because everything is stored on device, Omnipedia is super fast, completely private, and always available. Key Features: • Read Wikipedia articles offline — stay curious, even on a plane or the subway. • Lightning-fast search and article rendering with a clean design. • Explore new topics with personalized recommendations. • Get quick answers with private, on-device AI. • Bookmarks and history to keep track of your reading activities. • Customizable appearance, including dark mode and alternate themes. • Available in 11 languages: Arabic, Chinese, Dutch, English, French, German, Italian, Japanese, Portuguese, Russian, and Spanish. • Minimal storage requirements: Our tailor-made compressed archives save space while maximizing speed. • Incremental monthly updates to keep the articles fresh. • No ads — read without intrusive advertising or tracking. • Private and secure: Your search and reading activity stays on your device. Free Trial and Subscription: The app includes a free trial library with 100 articles to help you explore how it works. If you like what you see, our annual subscription allows you to download complete libraries containing millions of articles. ---------------- Omnipedia is not affiliated with Wikipedia or the Wikimedia Foundation. Article content is © Wikipedia contributors and licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. By downloading the Omnipedia app, you agree to: • Apple’s standard End User License Agreement (EULA), available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • The Omnipedia Terms of Service and Privacy Policy, available in-app or on our website: https://omnipedia.recursive.ink
Screenshots
Verdict
The clearest difference is in-app purchases: Deep Dictionary at none against Omnipedia's 1. Deep Dictionary also leads on ratings volume (51 vs 1) and update cadence (weekly vs every 2 weeks). Omnipedia's advantage is ads (none vs shown) and rating (5.0 vs 4.7). On price, 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
Both are free to download. Omnipedia sells 1 in-app purchase, starting at $19.99 per year. Deep Dictionary asks for nothing beyond the download.
Omnipedia 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.
Deep Dictionary ships an update weekly, Omnipedia every 2 weeks. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.
| Parameter | Deep Dictionary | Omnipedia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (51 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 77.8% of reviews | — |
| Number of ratings | 51 — better | 1 |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 28 MB |
| Age rating | 12+ | 12+ |
| Developer | DEEPCO | Recursive Ink Ltd |
Customer experience
Deep Dictionary
Omnipedia
In-app purchases
Deep Dictionary
No in-app purchases
Omnipedia
- Annual Subscription$19.991 Year
Questions
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Is Omnipedia free?
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