# Rubyist vs Cown Zoo

The clearest difference is price: Rubyist at Free against Cown Zoo's $1.99. Rubyist also leads on rating (4.6 vs 2.0) and review sentiment (83% vs 50%). Cown Zoo's advantage is in-app purchases (none vs 3) and chart position (#148 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Rubyist is free to download; Cown Zoo costs $1.99 up front. Rubyist sells 3 one-off in-app purchases. Cown Zoo asks for nothing beyond the download.

Rubyist holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Rubyist has 93 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 83% of Rubyist's written reviews are positive against 50% of Cown Zoo's.

Rubyist ships an update every 3 weeks, Cown Zoo every 3 months. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Rubyist | Cown Zoo |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.6 (93 ratings)](https://appshunter.io/ios/app/rubyist-ruby-scripting/id1539089868/reviews)** | [2.0 (3 ratings)](https://appshunter.io/ios/app/cown-zoo/id1596457459/reviews) |
| Number of ratings | **93** | 3 |
| Positive reviews | **83.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#148** |
| Size | 26 MB | 14 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TSUBASA TECHNOLOGIES LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1539089870) | [Inkwire Tech Hangzhou Co., Ltd.](https://appshunter.io/developer/1468283514) |

## 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 |


### Cown Zoo

[App page](https://appshunter.io/ios/app/cown-zoo/id1596457459)

**Currently charting:** #148 Top Paid · Developer Tools (US App Store)

Enhance your mobile web browsing experience by creating, editing, and injecting custom scripts and stylesheets into any webpage within Safari. This app offers a mobile-native interface for simplified script management.

**Highlights:** Create custom scripts, Edit user scripts, Inject CSS to webpages, Mobile-native interface, GreaseMonkey script support

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

**In-app purchases:** none


## Frequently asked questions

### Is Rubyist free?

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

### Is Cown Zoo free?

Cown Zoo costs $1.99, with no in-app purchases.

### Which has better reviews, Rubyist or Cown Zoo?

Rubyist is rated higher. Rubyist averages 4.6 out of 5 from 93 ratings, while Cown Zoo averages 2.0 from 3 ratings.

### Do Rubyist or Cown Zoo have ads?

Neither Rubyist nor Cown Zoo shows ads.

### Which is updated more often, Rubyist or Cown Zoo?

Rubyist ships an update every 3 weeks, and Cown Zoo every 3 months. Most recently, Rubyist was updated on September 24, 2026 and Cown Zoo on September 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*