# PeterJohn NumPy Matplotlib vs SMTP Tester Pro

The clearest difference is review sentiment: SMTP Tester Pro at 75% against PeterJohn NumPy Matplotlib's 0%. SMTP Tester Pro also leads on price ($3.99 vs $12.99) and chart position (#189 vs unranked). PeterJohn NumPy Matplotlib's advantage is update cadence (every 2 weeks vs every 6 weeks). On ads, in-app purchases, monetization model and device support there is nothing between them.

PeterJohn NumPy Matplotlib costs $12.99 and SMTP Tester Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PeterJohn NumPy Matplotlib ships an update every 2 weeks, SMTP Tester Pro every 6 weeks. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | PeterJohn NumPy Matplotlib | SMTP Tester Pro |
| --- | --- | --- |
| Price | $12.99 | **$3.99** |
| Positive reviews | 0.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Paid | Paid |
| Best chart rank | — | **#189** |
| Size | 222 MB | 4 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasushi Obata](https://appshunter.io/developer/899977114) | [Dorian Borovina](https://appshunter.io/developer/1772141221) |

## What reviewers say

### 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


### SMTP Tester Pro

[App page](https://appshunter.io/ios/app/smtp-tester-pro/id6736591154)

**Currently charting:** #189 Top Paid · Developer Tools (US App Store)

This application helps developers and IT professionals test and debug SMTP connections. It offers an intuitive interface for configuring servers, composing emails, and analyzing detailed transaction logs. Predefined templates for popular services and custom template management simplify setup and troubleshooting.

**Highlights:** SMTP server configuration, Support for various authentication methods, Multiple TLS modes, Customizable timeout settings, Email composition with CC/BCC, Template management, Detailed SMTP transaction logs

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PeterJohn NumPy Matplotlib free?

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

### Is SMTP Tester Pro free?

SMTP Tester Pro costs $3.99, with no in-app purchases.

### Do PeterJohn NumPy Matplotlib or SMTP Tester Pro have ads?

Neither PeterJohn NumPy Matplotlib nor SMTP Tester Pro shows ads.

### Which is updated more often, PeterJohn NumPy Matplotlib or SMTP Tester Pro?

PeterJohn NumPy Matplotlib ships an update every 2 weeks, and SMTP Tester Pro every 6 weeks. Most recently, PeterJohn NumPy Matplotlib was updated on September 20, 2026 and SMTP Tester Pro on September 14, 2026.

---

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