# Rubyist vs CodeMaster AI

The clearest difference is update cadence: CodeMaster AI at daily against Rubyist's every 3 weeks. CodeMaster AI also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rubyist sells 3 one-off in-app purchases and CodeMaster AI sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Rubyist ships an update every 3 weeks, CodeMaster AI daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Rubyist | CodeMaster AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (96 ratings)](https://appshunter.io/ios/app/rubyist-ruby-scripting/id1539089868/reviews)** | — |
| Number of ratings | **96** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 102 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TSUBASA TECHNOLOGIES LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1539089870) | [Mykola Shchypailo](https://appshunter.io/developer/1827279594) |

## What reviewers say

### Rubyist

[App page](https://appshunter.io/ios/app/rubyist-ruby-scripting/id1539089868)

Execute and automate Ruby scripts directly on your iPhone and iPad. This app utilizes the MRuby VM to run code, integrate with Shortcuts and Siri, and offers a robust editor with syntax highlighting and autocomplete.

**Highlights:** Run Ruby code on device, Editor with syntax highlighting, Code autocomplete, Shortcuts app integration, Siri command creation, Native alerts and inputs, HTTP requests, Clipboard access

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


### CodeMaster AI

[App page](https://appshunter.io/ios/app/codemaster-ai/id6787402891)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Tier Monthly | $3.99 | per month |
| Master Tier Yearly | $34.99 | per year |


## Frequently asked questions

### Is Rubyist free?

Rubyist is free to download, with in-app purchases available.

### Is CodeMaster AI free?

CodeMaster AI is free to download, with in-app purchases available.

### Do Rubyist or CodeMaster AI have ads?

Neither Rubyist nor CodeMaster AI shows ads.

### Which is updated more often, Rubyist or CodeMaster AI?

Rubyist ships an update every 3 weeks, and CodeMaster AI daily. Most recently, Rubyist was updated on November 3, 2026 and CodeMaster AI on October 31, 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.*