# Rocket Languages vs Clozemaster－Vocabulary Builder

The clearest difference is update cadence: Clozemaster－Vocabulary Builder at every 11 days against Rocket Languages's monthly. Clozemaster－Vocabulary Builder also leads on review sentiment (82% vs 70%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Rocket Languages sells 49 one-off in-app purchases and Clozemaster－Vocabulary Builder sells 8 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Clozemaster－Vocabulary Builder holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 2.6K and 2.1K respectively. Written reviews point the same way: 70% of Rocket Languages's written reviews are positive against 82% of Clozemaster－Vocabulary Builder's.

Rocket Languages ships an update monthly, Clozemaster－Vocabulary Builder every 11 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Rocket Languages | Clozemaster－Vocabulary Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.6K ratings)](https://appshunter.io/ios/app/rocket-languages/id597293943/reviews) | **[4.8 (2.1K ratings)](https://appshunter.io/ios/app/clozemastervocabulary-builder/id1149199075/reviews)** |
| Number of ratings | **2.6K** | 2.1K |
| Positive reviews | 69.8% of reviews | **82.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 44 MB | 82 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Libros Media Ltd](https://appshunter.io/developer/597291855) | [Language Innovation LLC](https://appshunter.io/developer/1149199074) |

## What reviewers say

### Rocket Languages

[App page](https://appshunter.io/ios/app/rocket-languages/id597293943)

Learn to speak new languages like Spanish, French, and Japanese with structured audio lessons and cultural insights. This app offers lifetime access to courses designed for real conversations, helping you overcome common learning frustrations and speak confidently from day one.

**Highlights:** Structured audio lessons for speaking, Lifetime access with free updates, Cultural insights and customs, Voice recognition for pronunciation, Adaptive review activities, Interactive audio and conversation practice

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

**In-app purchases (49)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Sign Language Level 1 | $39.99 | one-time |
| Rocket Spanish Level 1 | $59.99 | one-time |
| Rocket Japanese Level 1 | $59.99 | one-time |
| Rocket Italian Level 1 | $59.99 | one-time |
| Rocket Korean Level 1 | $59.99 | one-time |
| Rocket Arabic Level 1 | $59.99 | one-time |
| Rocket French Level 1 | $59.99 | one-time |
| Rocket Portuguese Level 1 | $59.99 | one-time |
| Rocket Sign Language Level 1 | $59.99 | one-time |
| Rocket Spanish Level 1 | $89.99 | one-time |
| Rocket Korean Level 1 | $89.99 | one-time |
| Rocket Arabic Level 1 | $89.99 | one-time |
| Rocket French Level 1 | $89.99 | one-time |
| Rocket German Level 1 | $89.99 | one-time |
| Rocket Italian Level 1 | $89.99 | one-time |
| Rocket Japanese Level 1 | $89.99 | one-time |
| Rocket French Level 1 | $99.99 | one-time |
| Rocket Japanese Level 1 | $99.99 | one-time |
| Rocket Italian Level 1 | $99.99 | one-time |
| Rocket Spanish Level 1 | $99.99 | one-time |
| Rocket Spanish Levels 1 & 2 | $119.99 | one-time |
| Rocket Spanish Premium: Level 1 | $149.99 | one-time |
| Rocket French Premium: Level 1 | $149.99 | one-time |
| Rocket German Premium: Level 1 | $149.99 | one-time |
| Rocket Italian Premium: Level 1 | $149.99 | one-time |
| Rocket Japanese Premium: Level 1 | $149.99 | one-time |
| Rocket Chinese Premium: Level 1 | $149.99 | one-time |
| Rocket Arabic Premium: Level 1 | $149.99 | one-time |
| Rocket Portuguese Premium: Level 1 | $149.99 | one-time |
| Rocket Korean Premium: Level 1 | $149.99 | one-time |
| Rocket Russian Premium: Level 1 | $149.99 | one-time |
| Rocket Spanish Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket French Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket Japanese Level 1, 2 & 3 | $179.99 | one-time |
| Rocket Russian Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket German Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket Chinese Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket Italian Levels 1, 2 & 3 | $179.99 | one-time |
| Rocket Spanish Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket Japanese Level 1, 2 & 3 | $249.99 | one-time |
| Rocket Italian Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket German Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket Chinese Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket Russian Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket French Levels 1, 2 & 3 | $249.99 | one-time |
| Rocket Japanese Level 1, 2 & 3 | $259.99 | one-time |
| Rocket Italian Levels 1, 2 & 3 | $259.99 | one-time |
| Rocket Spanish Levels 1, 2 & 3 | $259.99 | one-time |
| Rocket French Levels 1, 2 & 3 | $259.99 | one-time |

**What reviewers like**

- 👍 Interactive and engaging lessons
- 🚀 Comprehensive and structured learning approach
- 💡 Variety of practice methods (listening, speaking, writing)
- 👍 Explanations of grammar and cultural context
- 🚀 Detailed and accurate pronunciation feedback

**What reviewers complain about**

- 🐛 Voice recognition issues and inconsistencies
- 🐛 App crashes and bugs
- 🐛 Inability to review/replay recorded audio
- 🐛 Lack of offline functionality
- 🐛 Outdated or confusing user interface

**Reported bugs**

- Audio playback issues
- Inconsistent voice recognition
- Lesson progress not properly tracked
- Compatibility problems with newer devices/OS
- Crashes and freezes during use

**Requested features**

- Ability to slow down audio playback
- More grammar and vocabulary review tools
- Improved search and navigation within the app
- Customizable learning plans and progress tracking
- Integration with other language learning resources


### Clozemaster－Vocabulary Builder

[App page](https://appshunter.io/ios/app/clozemastervocabulary-builder/id1149199075)

Master vocabulary in over 50 languages through engaging cloze tests. Learn words in real-world sentence contexts, track progress, and compete globally. Offers multiple learning modes and grammar explanations.

**Highlights:** Cloze tests for vocabulary learning, Learn vocabulary in context, Over 50 languages available, Gamified learning with leaderboards, Multiple learning modes (Vocabulary, Listening, Speaking), Grammar explanations, Adjustable speaking speed

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clozemaster Pro Monthly | $8.99 | per month |
| Clozemaster Pro Monthly | $12.99 | per month |
| Clozemaster Pro Monthly | $12.99 | per month |
| Clozemaster Pro Yearly | $69.99 | per year |
| Clozemaster Pro Yearly | $79.99 | per year |
| Clozemaster Pro Annual | $79.99 | per year |
| Clozemaster Pro Annual | $79.99 | per year |
| Clozemaster Pro Yearly | $79.99 | per year |

**What reviewers like**

- 👍 Great for learning vocabulary and grammar
- 🚀 Effective spaced repetition and context-based learning
- 🎮 Gamified and enjoyable learning experience
- 🌐 Wide range of languages available, including rare ones
- 💡 Useful sentence explanations and grammar insights

**What reviewers complain about**

- 🐛 Occasional issues with audio quality and TTS
- 💰 Subscription model considered too expensive by some
- 🔍 Limited free version with daily sentence cap
- 🤖 Concerns about over-reliance on AI-generated content
- 🤔 Not suitable for complete beginners in a language

**Reported bugs**

- Crashes and performance issues on older devices
- Incorrect translations and sentence examples
- Inconsistencies in language-specific features

**Requested features**

- Ability to add custom sentences and vocabulary
- More detailed grammar explanations and lessons
- Integration with other language learning resources
- Improved user interface and navigation
- Offline mode with full functionality


## Frequently asked questions

### Is Rocket Languages free?

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

### Is Clozemaster－Vocabulary Builder free?

Clozemaster－Vocabulary Builder is free to download, with in-app purchases available.

### Which has better reviews, Rocket Languages or Clozemaster－Vocabulary Builder?

Clozemaster－Vocabulary Builder is rated higher. Rocket Languages averages 4.6 out of 5 from 2.6K ratings, while Clozemaster－Vocabulary Builder averages 4.8 from 2.1K ratings.

### Do Rocket Languages or Clozemaster－Vocabulary Builder have ads?

Neither Rocket Languages nor Clozemaster－Vocabulary Builder shows ads.

### Which is updated more often, Rocket Languages or Clozemaster－Vocabulary Builder?

Rocket Languages ships an update monthly, and Clozemaster－Vocabulary Builder every 11 days. Most recently, Rocket Languages was updated on October 24, 2026 and Clozemaster－Vocabulary Builder on October 24, 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.*