# TransKey vs UDictionary Translator

The clearest difference is ads: TransKey at none against UDictionary Translator's shown. TransKey also leads on review sentiment (77% vs 59%). UDictionary Translator's advantage is iOS requirement (11.0 vs 16.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. TransKey sells 3 in-app purchases, starting at $3.99 per 7 days and UDictionary Translator sells 9 in-app purchases, starting at $2.49 per 7 days. Whichever you choose, the download price is not the number that matters.

UDictionary Translator holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 13K and 9.3K respectively. Written reviews complicate that: 77% of TransKey's written reviews are positive against 59% of UDictionary Translator's, so the app with the better star average is not the one people write more warmly about.

TransKey ships an update every 3 weeks, UDictionary Translator fortnightly. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | TransKey | UDictionary Translator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (13K ratings)](https://appshunter.io/ios/app/transkey-text-translator-chat/id1021102012/reviews) | **[4.6 (9.3K ratings)](https://appshunter.io/ios/app/udictionary-translator/id1319771553/reviews)** |
| Number of ratings | **13K** | 9.3K |
| Positive reviews | **76.5% of reviews** | 58.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 18 MB | 557 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +12 |
| Developer | [Courtney & Company](https://appshunter.io/developer/322380460) | [Youdao (Hong Kong) Limited](https://appshunter.io/developer/1319771552) |

## What reviewers say

### TransKey

[App page](https://appshunter.io/ios/app/transkey-text-translator-chat/id1021102012)

Communicate seamlessly in any language without leaving your current app. This keyboard extension translates messages in real-time, both outgoing and incoming, supporting over 100 languages. It preserves capitalization and emojis for a natural conversation flow.

**Highlights:** Translate messages in real-time within any app, Translate received messages instantly, Supports over 100 languages, Automatic source language detection, Preserves capitalization and emojis, Quick language switching

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TransKey Premium (weekly) | $3.99 | per 7 days |
| TransKey Premium (monthly) | $9.99 | per month |
| TransKey Premium (yearly) | $49.99 | per year |

**What reviewers like**

- 👍 Convenient keyboard translator
- 🚀 Instant translations
- 💡 Supports many languages

**What reviewers complain about**

- 🔒 Limited translations per day
- 💰 Paid subscription required for unlimited translations
- 🐛 Occasional translation errors

**Reported bugs**

- Keyboard not working on some devices
- Translations not syncing properly

**Requested features**

- Unlimited free translations
- Improved translation accuracy
- Option to disable character limit


### UDictionary Translator

[App page](https://appshunter.io/ios/app/udictionary-translator/id1319771553)

Translate text, voice, and images across 108 languages. This app offers a comprehensive dictionary with native examples and pronunciation guides. Premium features include camera translation, a translate keyboard, and offline mode for seamless communication.

**Highlights:** Text translation in 108 languages, Voice translation with 47 accents, Authoritative built-in dictionaries, Camera translation via photo, Translate Keyboard for in-app use, Offline translation mode

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U Dictionary PRO | $2.49 | per 7 days |
| U Dictionary PRO-1 week | $4.99 | per 7 days |
| U Dictionary PRO-1 month | $5.99 | per month |
| U Dictionary PRO | $9.99 | per month |
| U-Dictionary PRO Monthly | $16.99 | per month |
| U Dictionary PRO-1 month | $16.99 | per month |
| U Dictionary PRO-1 year | $29.99 | per year |
| U Dictionary PRO-1 year | $56.99 | per year |
| U Dictionary PRO-1 year | $69.99 | per year |

**What reviewers like**

- ⭐ Excellent translation accuracy
- 🌐 Supports multiple languages
- 📚 Comprehensive dictionary with examples
- 🤖 Helpful text-to-speech feature
- 🔍 Useful scanning and translation capabilities

**What reviewers complain about**

- 💰 Excessive paywall and in-app purchases
- 🐛 Occasional translation failures or errors
- 🔌 Requires internet connection for full functionality
- 🕰️ Slow performance and lag at times
- 📱 Limited features in free version

**Reported bugs**

- Translation unavailable due to 'no internet connection' error when online
- Scanning feature not working consistently
- Keyboard translation not functioning properly
- App crashes or freezes unexpectedly

**Requested features**

- Offline mode for all translation features
- Customizable text-to-speech voice options
- Ability to save favorite words or translations
- More language support, especially for less common languages
- Improved grammar and sentence structure analysis


## Frequently asked questions

### Is TransKey free?

TransKey is free to download, with in-app purchases available.

### Is UDictionary Translator free?

UDictionary Translator is free to download, with in-app purchases available.

### Which has better reviews, TransKey or UDictionary Translator?

UDictionary Translator is rated higher. TransKey averages 4.4 out of 5 from 13K ratings, while UDictionary Translator averages 4.6 from 9.3K ratings.

### Do TransKey or UDictionary Translator have ads?

UDictionary Translator shows ads; TransKey does not.

### Which is updated more often, TransKey or UDictionary Translator?

TransKey ships an update every 3 weeks, and UDictionary Translator fortnightly. Most recently, TransKey was updated on October 20, 2026 and UDictionary Translator on October 19, 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.*