# Simple JavaScript vs Shellby

The clearest difference is update cadence: Shellby at every 11 days against Simple JavaScript's monthly. Simple JavaScript's advantage is chart position (#199 vs unranked) and iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Simple JavaScript sells 2 in-app purchases, starting at $1.99 per month and Shellby sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Simple JavaScript ships an update monthly, Shellby every 11 days. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Simple JavaScript | Shellby |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | — | Freemium |
| Best chart rank | **#199** | — |
| Size | 54 MB | 15 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [YUKI TANAIKE](https://appshunter.io/developer/478558546) | [荟 马](https://appshunter.io/developer/1859998670) |

## What reviewers say

### 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 |


### Shellby

[App page](https://appshunter.io/ios/app/shellby-ssh-client-and-terminal/id6786177565)

A native SSH client for Apple devices that offers SFTP, tunnels, and server monitoring. It features an AI assistant to translate plain language tasks into commands and Mosh-compatible transport for resilient sessions.

**Highlights:** AI-powered command generation, Mosh-compatible sessions, SFTP file transfer, Port forwarding and tunnels, Server monitoring (CPU, memory), On-screen key bar

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $9.99 | per year |
| Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Simple JavaScript free?

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

### Is Shellby free?

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

### Do Simple JavaScript or Shellby have ads?

Neither Simple JavaScript nor Shellby shows ads.

### Which is updated more often, Simple JavaScript or Shellby?

Simple JavaScript ships an update monthly, and Shellby every 11 days. Most recently, Simple JavaScript was updated on September 21, 2026 and Shellby on September 14, 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.*