# Padpilot E vs Systems Trainer

The clearest difference is update cadence: Systems Trainer at every 2 weeks against Padpilot E's monthly. Padpilot E's advantage is iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Padpilot E ships an update monthly, Systems Trainer every 2 weeks. The most recent releases landed on September 4, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Padpilot E | Systems Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/padpilot-e-reader/id1590833752/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 21.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 61 MB | 1000 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Padpilot Limited](https://appshunter.io/developer/413253261) | [Patrick Heinrich](https://appshunter.io/developer/1794204930) |

## What reviewers say

### Padpilot E

[App page](https://appshunter.io/ios/app/padpilot-e-reader/id1590833752)

Access assigned or purchased educational books. This reader allows students to engage with digital learning materials provided by their aviation training organization or bought directly.

**Highlights:** Access assigned books, Purchase books, Digital learning materials, Aviation training content

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

**In-app purchases:** none


### Systems Trainer

[App page](https://appshunter.io/ios/app/systems-trainer/id6759176885)

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

**In-app purchases:** none


## Frequently asked questions

### Is Padpilot E free?

Padpilot E is free to download, with no in-app purchases.

### Is Systems Trainer free?

Systems Trainer is free to download, with no in-app purchases.

### Do Padpilot E or Systems Trainer have ads?

Neither Padpilot E nor Systems Trainer shows ads.

### Which is updated more often, Padpilot E or Systems Trainer?

Padpilot E ships an update monthly, and Systems Trainer every 2 weeks. Most recently, Padpilot E was updated on September 4, 2026 and Systems Trainer on September 9, 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.*