# UDevice vs PeterJohn NumPy Matplotlib

The clearest difference is review sentiment: UDevice at 78% against PeterJohn NumPy Matplotlib's 0%. UDevice also leads on price ($4.99 vs $12.99) and chart position (#60 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

UDevice costs $4.99 and PeterJohn NumPy Matplotlib $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UDevice ships an update every 3 weeks, PeterJohn NumPy Matplotlib every 2 weeks. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | UDevice | PeterJohn NumPy Matplotlib |
| --- | --- | --- |
| Price | **$4.99** | $12.99 |
| Rating | **[4.4 (36 ratings)](https://appshunter.io/ios/app/udevice-dev-assistant/id1608053878/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | **78.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Best chart rank | **#60** | — |
| Size | 159 MB | 222 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gansu Zhenxian Network Technology Co., Ltd.](https://appshunter.io/developer/1616881226) | [Yasushi Obata](https://appshunter.io/developer/899977114) |

## What reviewers say

### UDevice

[App page](https://appshunter.io/ios/app/udevice-dev-assistant/id1608053878)

**Currently charting:** #60 Top Paid · Developer Tools (US App Store)

This app offers a comprehensive suite of developer and testing tools. It includes network utilities like HTTP(s) capture and DNS parsing, alongside system information and file management capabilities. Ideal for development, testing, and device management.

**Highlights:** HTTP(s) Capture/Rewrite, SSH and Terminal access, Python3 interpreter, Cookie editing, Network utilities (Ping, DNS, Traceroute, Port Scan), File manager, Device fingerprinting and system info

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

**In-app purchases:** none


### PeterJohn NumPy Matplotlib

[App page](https://appshunter.io/ios/app/peterjohn-numpy-matplotlib/id6471342492)

This Python interpreter for iPhone allows you to study data science, deep learning, and reinforcement learning using NumPy and Matplotlib. It provides a user-friendly interface with tutorials and scripts to get started quickly.

**Highlights:** Python interpreter for iPhone, Includes NumPy module, Includes Matplotlib module, Study data science, deep learning, reinforcement learning, Tutorials and example scripts, Run Python scripts

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

**In-app purchases:** none


## Frequently asked questions

### Is UDevice free?

UDevice costs $4.99, with no in-app purchases.

### Is PeterJohn NumPy Matplotlib free?

PeterJohn NumPy Matplotlib costs $12.99, with no in-app purchases.

### Do UDevice or PeterJohn NumPy Matplotlib have ads?

Neither UDevice nor PeterJohn NumPy Matplotlib shows ads.

### Which is updated more often, UDevice or PeterJohn NumPy Matplotlib?

UDevice ships an update every 3 weeks, and PeterJohn NumPy Matplotlib every 2 weeks. Most recently, UDevice was updated on October 18, 2026 and PeterJohn NumPy Matplotlib on October 7, 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.*