# Simple JavaScript vs Model Pulse

The clearest difference is in-app purchases: Model Pulse at none against Simple JavaScript's 2. Model Pulse also leads on update cadence (every 4 days vs every 4 weeks). Simple JavaScript's advantage is device support (4 vs 2). On price, ads 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. Model Pulse asks for nothing beyond the download.

Simple JavaScript ships an update every 4 weeks, Model Pulse every 4 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple JavaScript | Model Pulse |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Size | 70 MB | 46 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YUKI TANAIKE](https://appshunter.io/developer/478558546) | [MICHAEL EDWARD POTTER](https://appshunter.io/developer/1890085240) |

## What reviewers say

### Simple JavaScript

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

**Features:** 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 |


### Model Pulse

[App page](https://appshunter.io/ios/app/model-pulse/id6787764625)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple JavaScript free?

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

### Is Model Pulse free?

Model Pulse is free to download, with no in-app purchases.

### Do Simple JavaScript or Model Pulse have ads?

Neither Simple JavaScript nor Model Pulse shows ads.

### Which is updated more often, Simple JavaScript or Model Pulse?

Simple JavaScript ships an update every 4 weeks, and Model Pulse every 4 days. Most recently, Simple JavaScript was updated on November 5, 2026 and Model Pulse 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.*