# Four Colours vs Learn Shell Scripting Pro

The clearest difference is update cadence: Learn Shell Scripting Pro at every 2 months against Four Colours's every 42 months. Learn Shell Scripting Pro also leads on chart position (#198 vs unranked). Four Colours's advantage is price ($1.99 vs $4.99) and iOS requirement (12.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Four Colours costs $1.99 and Learn Shell Scripting Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Four Colours ships an update every 42 months, Learn Shell Scripting Pro every 2 months. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Four Colours | Learn Shell Scripting Pro |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/four-colours/id644215345/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 2 months** |
| Monetization | Paid | — |
| Best chart rank | — | **#198** |
| Size | 15 MB | 12 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Roman Koksharov](https://appshunter.io/developer/700716922) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Four Colours

[App page](https://appshunter.io/ios/app/four-colours/id644215345)

Explore the mathematical concept of the four-color theorem with interactive maps of various countries and regions. This educational app allows you to test and understand how any map can be colored using only four colors, ensuring no adjacent areas share the same hue.

**Highlights:** Four-color theorem demonstration, Interactive maps of 12 countries/regions, Geography study tool, Computer-aided science verification, Educational exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Shell Scripting Pro

[App page](https://appshunter.io/ios/app/learn-shell-scripting-pro/id6747474775)

**Currently charting:** #198 Top Paid · Education (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Four Colours free?

Four Colours costs $1.99, with no in-app purchases.

### Is Learn Shell Scripting Pro free?

Learn Shell Scripting Pro costs $4.99, with no in-app purchases.

### Do Four Colours or Learn Shell Scripting Pro have ads?

Neither Four Colours nor Learn Shell Scripting Pro shows ads.

### Which is updated more often, Four Colours or Learn Shell Scripting Pro?

Four Colours ships an update every 42 months, and Learn Shell Scripting Pro every 2 months. Most recently, Four Colours was updated on October 8, 2026 and Learn Shell Scripting Pro on October 12, 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.*