# luai5.2.1 vs PeterJohn NumPy

The clearest difference is price: luai5.2.1 at Free against PeterJohn NumPy's $9.99. luai5.2.1 also leads on device support (4 vs 2). PeterJohn NumPy's advantage is in-app purchases (none vs 7) and update cadence (every 2 weeks vs every 3 months). On ads and iOS requirement there is nothing between them.

luai5.2.1 is free to download; PeterJohn NumPy costs $9.99 up front. luai5.2.1 sells 7 one-off in-app purchases. PeterJohn NumPy asks for nothing beyond the download.

luai5.2.1 ships an update every 3 months, PeterJohn NumPy every 2 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | luai5.2.1 | PeterJohn NumPy |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/luai521-autocompleteruncode/id593464654/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 91.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 222 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [小文 黄](https://appshunter.io/developer/490328393) | [Yasushi Obata](https://appshunter.io/developer/899977114) |

## What reviewers say

### luai5.2.1

[App page](https://appshunter.io/ios/app/luai521-autocompleteruncode/id593464654)

Learn, run, and share Lua scripts with code completion, syntax highlighting, and a built-in browser. Customize your learning environment and share code easily via various platforms.

**Highlights:** Autocompletion and auto-indent, Code coloring and syntax highlighting, Built-in browser for learning materials, File system support for various formats, Customizable interface and appearance, Code sharing via email and social media, Generate QR codes for scripts and materials

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| To remove ads | $0.99 | one-time |
| Password Service | $0.99 | one-time |
| Horizontal screen development | $0.99 | one-time |
| Simple Vedio | $0.99 | one-time |
| Encryption Compression | $0.99 | one-time |
| Text Search | $0.99 | one-time |
| Autocomplete | $0.99 | one-time |


### PeterJohn NumPy

[App page](https://appshunter.io/ios/app/peterjohn-numpy/id1662896316)

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

**In-app purchases:** none


## Frequently asked questions

### Is luai5.2.1 free?

luai5.2.1 is free to download, with in-app purchases available.

### Is PeterJohn NumPy free?

PeterJohn NumPy costs $9.99, with no in-app purchases.

### Do luai5.2.1 or PeterJohn NumPy have ads?

Neither luai5.2.1 nor PeterJohn NumPy shows ads.

### Which is updated more often, luai5.2.1 or PeterJohn NumPy?

luai5.2.1 ships an update every 3 months, and PeterJohn NumPy every 2 weeks. Most recently, luai5.2.1 was updated on November 1, 2026 and PeterJohn NumPy on November 3, 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.*