# JSBox vs Pocket Assembler

The clearest difference is rating: Pocket Assembler at 5.0 against JSBox's 4.0. Pocket Assembler also leads on review sentiment (92% vs 50%). JSBox's advantage is ratings volume (85 vs 9) and iOS requirement (14.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. JSBox sells 2 in-app purchases, starting at $7.99 per year and Pocket Assembler sells 2 in-app purchases, starting at $7.99 per year. Whichever you choose, the download price is not the number that matters.

Pocket Assembler holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: JSBox has 85 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 50% of JSBox's written reviews are positive against 92% of Pocket Assembler's.

JSBox ships an update fortnightly, Pocket Assembler every 9 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | JSBox | Pocket Assembler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (85 ratings)](https://appshunter.io/ios/app/jsbox-learn-to-code/id1312014438/reviews) | **[5.0 (9 ratings)](https://appshunter.io/ios/app/pocket-assembler/id6737518265/reviews)** |
| Number of ratings | **85** | 9 |
| Positive reviews | 49.5% of reviews | **91.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 178 MB | 5 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [颖 钟](https://appshunter.io/developer/928924733) | [Hudson Heavy Industries](https://appshunter.io/developer/1727337256) |

## What reviewers say

### JSBox

[App page](https://appshunter.io/ios/app/jsbox-learn-to-code/id1312014438)

This app is a mobile JavaScript IDE that allows users to learn and write JavaScript code. It provides tools to create native iOS utilities, widgets, extensions, and more, catering to both beginners and experienced developers.

**Highlights:** Mobile JavaScript IDE, Create native iOS utilities, Design widgets and keyboards, Siri/Shortcuts integration, Beautiful code editor, Advanced development tools, iOS extension support

**Features:** Safari Extension

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JSBox Pro | $7.99 | per year |
| JSBox Pro - Discount | $7.99 | per year |


### Pocket Assembler

[App page](https://appshunter.io/ios/app/pocket-assembler/id6737518265)

Learn assembly programming on your mobile device with a streamlined interface. It offers free coding challenges and documentation, with an optional Pro upgrade for advanced features and more complex projects.

**Highlights:** Learn assembly programming, Free coding mode, 28 coding challenges, Comprehensive documentation, Customizable editor themes, Advanced instructions (Pro), Custom execution speed (Pro)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $7.99 | per year |
| Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is JSBox free?

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

### Is Pocket Assembler free?

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

### Which has better reviews, JSBox or Pocket Assembler?

Pocket Assembler is rated higher. JSBox averages 4.0 out of 5 from 85 ratings, while Pocket Assembler averages 5.0 from 9 ratings.

### Do JSBox or Pocket Assembler have ads?

Neither JSBox nor Pocket Assembler shows ads.

### Which is updated more often, JSBox or Pocket Assembler?

JSBox ships an update fortnightly, and Pocket Assembler every 9 days. Most recently, JSBox was updated on October 11, 2026 and Pocket Assembler on October 9, 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.*