# A3Calc vs CodeMaster4

The clearest difference is price: CodeMaster4 at Free against A3Calc's $1.99. CodeMaster4 also leads on update cadence (fortnightly vs every 18 months). A3Calc's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

CodeMaster4 is free to download; A3Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

A3Calc ships an update every 18 months, CodeMaster4 fortnightly. Both last shipped on November 8, 2026.

## The numbers

| Metric | A3Calc | CodeMaster4 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Fortnightly** |
| Size | 2 MB | 203 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Redt Inc.](https://appshunter.io/developer/1535567812) |

## What reviewers say

### A3Calc

[App page](https://appshunter.io/ios/app/a3calc/id1340952531)

**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 A3Calc free?

A3Calc costs $1.99, with no in-app purchases.

### Is CodeMaster4 free?

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

### Do A3Calc or CodeMaster4 have ads?

Neither A3Calc nor CodeMaster4 shows ads.

### Which is updated more often, A3Calc or CodeMaster4?

A3Calc ships an update every 18 months, and CodeMaster4 fortnightly. Most recently, A3Calc was updated on November 8, 2026 and CodeMaster4 on November 8, 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.*