# World's Key vs Dr. Cube

The clearest difference is update cadence: World's Key at every 8 days against Dr. Cube's every 5 weeks. World's Key also leads on review sentiment (55% vs 33%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.8 for World's Key against 3.7 for Dr. Cube. Both are backed by a comparable volume of ratings — 293 and 115 respectively. Written reviews are what separate them: 55% of World's Key's written reviews are positive against 33% of Dr. Cube's.

World's Key ships an update every 8 days, Dr. Cube every 5 weeks. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | World's Key | Dr. Cube |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (293 ratings)](https://appshunter.io/ios/app/worlds-key/id1494964110/reviews)** | [3.7 (115 ratings)](https://appshunter.io/ios/app/dr-cube/id6446790146/reviews) |
| Number of ratings | **293** | 115 |
| Positive reviews | **54.5% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 35 MB | 54 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mohammad Bzeih](https://appshunter.io/developer/1494964109) | [Huda Ismail](https://appshunter.io/developer/1791713837) |

## What reviewers say

### World's Key

[App page](https://appshunter.io/ios/app/worlds-key/id1494964110)

This interactive educational app offers audio-visual lessons and exercises for English and Science curricula for Kindergarten and Primary levels. Students can access engaging content and assessments through an online account, supplementing their printed books.

**Highlights:** Interactive audio-visual lessons, English and Science curricula, Kindergarten and Primary levels, Interactive exercises, Assessments for lessons, Online account access

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Educational value for students
- 😍 Highly praised by young students
- 👍 Useful for international schools
- 👍 Good content for learning
- 👍 App is beneficial for international students

**What reviewers complain about**

- 😡 App is very slow
- 😡 App crashes frequently
- 😡 App is not user-friendly
- 😡 App is old and outdated
- 😡 App is heavy and lags

**Reported bugs**

- App logs out when accessing videos
- App freezes and doesn't calculate views
- App has errors in exam time calculation
- App doesn't open
- App crashes when opening or solving lessons

**Requested features**

- Add video playback speed control
- Improve app's responsiveness and speed
- Continuous improvement and development of the app
- Fix bugs and glitches
- Update the app to be more modern


### Dr. Cube

[App page](https://appshunter.io/ios/app/dr-cube/id6446790146)

Access a variety of educational courses tailored for students at different levels. Features high-quality video lectures from various instructors, with course descriptions to help you find the perfect fit for your studies in Iraqi universities.

**Highlights:** Diverse educational courses, Courses for Iraqi universities, Lectures by different instructors, High-quality video content, Detailed course descriptions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World's Key free?

World's Key is free to download, with no in-app purchases.

### Is Dr. Cube free?

Dr. Cube is free to download, with no in-app purchases.

### Which has better reviews, World's Key or Dr. Cube?

World's Key is rated higher. World's Key averages 3.8 out of 5 from 293 ratings, while Dr. Cube averages 3.7 from 115 ratings.

### Do World's Key or Dr. Cube have ads?

Neither World's Key nor Dr. Cube shows ads.

### Which is updated more often, World's Key or Dr. Cube?

World's Key ships an update every 8 days, and Dr. Cube every 5 weeks. Most recently, World's Key was updated on October 11, 2026 and Dr. Cube on September 30, 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.*