# SmartBox Reference Guide vs CodeMaster4

The clearest difference is iOS requirement: SmartBox Reference Guide at 12.0 against CodeMaster4's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly fortnightly. Both last shipped on September 17, 2026.

## The numbers

| Metric | SmartBox Reference Guide | CodeMaster4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (34 ratings)](https://appshunter.io/ios/app/smartbox-reference-guide/id1172947942/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | — |
| Size | 65 MB | 202 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Smart Box Technology, LLC](https://appshunter.io/developer/1172947941) | [Redt Inc.](https://appshunter.io/developer/1535567812) |

## What reviewers say

### SmartBox Reference Guide

[App page](https://appshunter.io/ios/app/smartbox-reference-guide/id1172947942)

Learn programming concepts through guided lessons. This educational tool breaks down key programming ideas for understanding, not for live coding. Ideal for beginners wanting to grasp fundamental principles.

**Highlights:** Step-by-step programming guidance, Clear explanations of key concepts, Educational training tool, Focus on understanding principles, Suitable for beginners

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

**In-app purchases:** none


### CodeMaster4

[App page](https://appshunter.io/ios/app/codemaster4/id6741621289)

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartBox Reference Guide free?

SmartBox Reference Guide is free to download, with no in-app purchases.

### Is CodeMaster4 free?

CodeMaster4 is free to download, with no in-app purchases.

### Do SmartBox Reference Guide or CodeMaster4 have ads?

Neither SmartBox Reference Guide nor CodeMaster4 shows ads.

### Which is updated more often, SmartBox Reference Guide or CodeMaster4?

SmartBox Reference Guide ships an update fortnightly, and CodeMaster4 fortnightly. Most recently, SmartBox Reference Guide was updated on September 17, 2026 and CodeMaster4 on September 17, 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.*