# Harbour vs PeterJohn NumPy Matplotlib

The clearest difference is review sentiment: Harbour at 88% against PeterJohn NumPy Matplotlib's 0%. Harbour also leads on price ($2.99 vs $12.99) and chart position (#20 vs unranked). PeterJohn NumPy Matplotlib's advantage is update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (15.0 vs 18.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

Harbour costs $2.99 and PeterJohn NumPy Matplotlib $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Harbour ships an update every 6 weeks, PeterJohn NumPy Matplotlib every 2 weeks. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Harbour | PeterJohn NumPy Matplotlib |
| --- | --- | --- |
| Price | **$2.99** | $12.99 |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/harbour-docker-manager/id1582439659/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | **88.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#20** | — |
| Size | 9 MB | 222 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kacper Kaczmarzyk](https://appshunter.io/developer/1582439661) | [Yasushi Obata](https://appshunter.io/developer/899977114) |

## What reviewers say

### Harbour

[App page](https://appshunter.io/ios/app/harbour-docker-manager/id1582439659)

**Currently charting:** #20 Top Paid · Developer Tools, #179 Top Grossing · Developer Tools (US App Store)

Manage multiple Docker servers and containers from your iOS device. Monitor container status, control stacks, and receive background notifications. Requires Portainer to be installed.

**Highlights:** Manage multiple Docker servers, Control containers and stacks, Monitor container status and logs, Home Screen widgets for container insights, Handoff support for seamless transitions, Background notifications, iPadOS support

**Features:** 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 Harbour free?

Harbour costs $2.99, with no in-app purchases.

### Is PeterJohn NumPy Matplotlib free?

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

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

Neither Harbour nor PeterJohn NumPy Matplotlib shows ads.

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

Harbour ships an update every 6 weeks, and PeterJohn NumPy Matplotlib every 2 weeks. Most recently, Harbour was updated on September 25, 2026 and PeterJohn NumPy Matplotlib on September 20, 2026.

---

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