# Dr. Computer vs Clear 4

The clearest difference is update cadence: Clear 4 at fortnightly against Dr. Computer's every 4 months. Dr. Computer's advantage is iOS requirement (10.0 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Dr. Computer ships an update every 4 months, Clear 4 fortnightly. The most recent releases landed on October 9, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Dr. Computer | Clear 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/clear-4/id1546584385/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Ad-supported | Ad-supported |
| Size | 44 MB | 74 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUD Inc.](https://appshunter.io/developer/453469451) | [文锋 郑](https://appshunter.io/developer/1590995911) |

## What reviewers say

### Dr. Computer

[App page](https://appshunter.io/ios/app/dr-computer/id1491200188)

Solve math puzzles by composing equations to match target numbers using colored digits and symbols. This game challenges your logic and arithmetic skills.

**Highlights:** Equation composition, Colored numbers and symbols, Logic challenges, Arithmetic practice, Puzzle gameplay

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

**In-app purchases:** none


### Clear 4

[App page](https://appshunter.io/ios/app/clear-4/id1546584385)

A free puzzle game where players strategically click squares to trigger chain reactions and clear the board. It features simple mechanics with elements like rotating baffles and black holes to add complexity.

**Highlights:** Chain reaction gameplay, Strategic square clicking, Rotating baffles, Black holes, Limited steps to clear levels

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dr. Computer free?

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

### Is Clear 4 free?

Clear 4 is free to download, with no in-app purchases.

### Do Dr. Computer or Clear 4 have ads?

Both Dr. Computer and Clear 4 show ads.

### Which is updated more often, Dr. Computer or Clear 4?

Dr. Computer ships an update every 4 months, and Clear 4 fortnightly. Most recently, Dr. Computer was updated on October 9, 2026 and Clear 4 on September 26, 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.*