# Probe vs Simple JavaScript

The clearest difference is in-app purchases: Probe at none against Simple JavaScript's 2. Probe also leads on update cadence (every 2 days vs every 3 weeks). Simple JavaScript's advantage is iOS requirement (15.6 vs 17.0). On price, ads 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. Probe asks for nothing beyond the download.

Probe ships an update every 2 days, Simple JavaScript every 3 weeks. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Probe | Simple JavaScript |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 6 MB | 54 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Almeida](https://appshunter.io/developer/1862683137) | [YUKI TANAIKE](https://appshunter.io/developer/478558546) |

## What reviewers say

### Probe

[App page](https://appshunter.io/ios/app/probe-simple-ssh-and-terminal/id6773565903)

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

**In-app purchases:** none


### Simple JavaScript

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

**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 Probe free?

Probe 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 Probe or Simple JavaScript have ads?

Neither Probe nor Simple JavaScript shows ads.

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

Probe ships an update every 2 days, and Simple JavaScript every 3 weeks. Most recently, Probe was updated on October 4, 2026 and Simple JavaScript on October 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.*