# Dictionary and Thesaurus Pro vs Deep Dictionary

The clearest difference is price: Deep Dictionary at Free against Dictionary and Thesaurus Pro's $9.99. Deep Dictionary also leads on update cadence (weekly vs every 4 months). Dictionary and Thesaurus Pro's advantage is ads (none vs shown) and ratings volume (2.6K vs 51). On in-app purchases there is nothing between them.

Deep Dictionary is free to download; Dictionary and Thesaurus Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dictionary and Thesaurus Pro holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Dictionary and Thesaurus Pro has 2.6K ratings behind it against 51, so its average is the more settled of the two. Written reviews point the same way: 87% of Dictionary and Thesaurus Pro's written reviews are positive against 78% of Deep Dictionary's.

Dictionary and Thesaurus Pro ships an update every 4 months, Deep Dictionary weekly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Dictionary and Thesaurus Pro | Deep Dictionary |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.9 (2.6K ratings)](https://appshunter.io/ios/app/dictionary-and-thesaurus-pro/id492085918/reviews)** | [4.7 (51 ratings)](https://appshunter.io/ios/app/deep-dictionary/id6451319239/reviews) |
| Number of ratings | **2.6K** | 51 |
| Positive reviews | **86.5% of reviews** | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#32** | — |
| Size | 22 MB | 14 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Farlex, Inc.](https://appshunter.io/developer/379450386) | [DEEPCO](https://appshunter.io/developer/1697523614) |

## What reviewers say

### Dictionary and Thesaurus Pro

[App page](https://appshunter.io/ios/app/dictionary-and-thesaurus-pro/id492085918)

**Currently charting:** #32 Top Paid · Reference (US App Store)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Comprehensive and detailed definitions
- 💡 Helpful translation and pronunciation features
- 👍 Useful word games and trivia
- 👍 Offline mode availability

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔍 Limited thesaurus functionality
- 🔍 Lack of customization options
- 💰 Paid version required to remove ads

**Reported bugs**

- 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**

- Add more language dictionaries
- Improve thesaurus with more synonyms and antonyms
- Implement flashcard or vocabulary building features
- Allow users to save custom word lists


### Deep Dictionary

[App page](https://appshunter.io/ios/app/deep-dictionary/id6451319239)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dictionary and Thesaurus Pro free?

Dictionary and Thesaurus Pro costs $9.99, with no in-app purchases.

### Is Deep Dictionary free?

Deep Dictionary is free to download, with no in-app purchases.

### Which has better reviews, Dictionary and Thesaurus Pro or Deep Dictionary?

Dictionary and Thesaurus Pro is rated higher. Dictionary and Thesaurus Pro averages 4.9 out of 5 from 2.6K ratings, while Deep Dictionary averages 4.7 from 51 ratings.

### Do Dictionary and Thesaurus Pro or Deep Dictionary have ads?

Deep Dictionary shows ads; Dictionary and Thesaurus Pro does not.

### Which is updated more often, Dictionary and Thesaurus Pro or Deep Dictionary?

Dictionary and Thesaurus Pro ships an update every 4 months, and Deep Dictionary weekly. Most recently, Dictionary and Thesaurus Pro was updated on October 14, 2026 and Deep Dictionary on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*