# Silk Script Runner vs Simple JavaScript

The clearest difference is in-app purchases: Silk Script Runner at none against Simple JavaScript's 2. Silk Script Runner also leads on update cadence (fortnightly vs monthly). Simple JavaScript's advantage is chart position (#199 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Simple JavaScript sells 2 in-app purchases, starting at $1.99 per month. Silk Script Runner asks for nothing beyond the download.

Silk Script Runner ships an update fortnightly, Simple JavaScript monthly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Silk Script Runner | Simple JavaScript |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/silk-script-runner/id6778363658/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Best chart rank | — | **#199** |
| Size | 7 MB | 54 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [静俐 张](https://appshunter.io/developer/447014629) | [YUKI TANAIKE](https://appshunter.io/developer/478558546) |

## What reviewers say

### Silk Script Runner

[App page](https://appshunter.io/ios/app/silk-script-runner/id6778363658)

This app provides a straightforward environment for writing, running, and exploring scripts on mobile devices. It offers a beginner-friendly syntax similar to Python, allowing users to learn programming, test ideas, and build simple applications and games.

**Highlights:** Write simple, readable scripts, Beginner-friendly programming syntax, Run examples and built-in demos, Build lightweight GUI games, Test ideas quickly, Focus on logic over complexity

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

**In-app purchases:** none


### Simple JavaScript

[App page](https://appshunter.io/ios/app/simple-javascript/id6782952012)

**Currently charting:** #199 Top Grossing · Developer Tools (US App Store)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple JavaScript Pro (Monthly) | $1.99 | per month |
| Simple JavaScript Pro (Annual) | $18.00 | per year |


## Frequently asked questions

### Is Silk Script Runner free?

Silk Script Runner is free to download, with no in-app purchases.

### Is Simple JavaScript free?

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

### Do Silk Script Runner or Simple JavaScript have ads?

Neither Silk Script Runner nor Simple JavaScript shows ads.

### Which is updated more often, Silk Script Runner or Simple JavaScript?

Silk Script Runner ships an update fortnightly, and Simple JavaScript monthly. Most recently, Silk Script Runner was updated on September 22, 2026 and Simple JavaScript on September 21, 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.*