# Data Generator Plus vs PeterJohn NumPy

The clearest difference is price: Data Generator Plus at $2.99 against PeterJohn NumPy's $9.99. Data Generator Plus also leads on chart position (#200 vs unranked) and iOS requirement (13.0 vs 15.0). PeterJohn NumPy's advantage is update cadence (every 2 weeks vs every 38 months). On ads, in-app purchases and device support there is nothing between them.

Data Generator Plus costs $2.99 and PeterJohn NumPy $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Data Generator Plus ships an update every 38 months, PeterJohn NumPy every 2 weeks. The most recent releases landed on July 25, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Data Generator Plus | PeterJohn NumPy |
| --- | --- | --- |
| Price | **$2.99** | $9.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#200** | — |
| Size | 2 MB | 222 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heng Jia Liang](https://appshunter.io/developer/1532000635) | [Yasushi Obata](https://appshunter.io/developer/899977114) |

## What reviewers say

### Data Generator Plus

[App page](https://appshunter.io/ios/app/data-generator-plus/id1618886147)

**Currently charting:** #200 Top Paid · Developer Tools (US App Store)

This tool generates realistic test data for machine learning or database testing. It offers flexible configuration options for data types, ranges, and uniqueness, with options to preview and save data in various array formats.

**Highlights:** Configurable data generation, Set data amount and ranges, Integer or double data types, Option for unique values, Graph preview, Save data in array formats, Supports [x], [y], [x, y], (x, y), {x, y}

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Data Generator Plus free?

Data Generator Plus costs $2.99, with no in-app purchases.

### Is PeterJohn NumPy free?

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

### Do Data Generator Plus or PeterJohn NumPy have ads?

Neither Data Generator Plus nor PeterJohn NumPy shows ads.

### Which is updated more often, Data Generator Plus or PeterJohn NumPy?

Data Generator Plus ships an update every 38 months, and PeterJohn NumPy every 2 weeks. Most recently, Data Generator Plus was updated on July 25, 2026 and PeterJohn NumPy on August 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*