# TRN App vs CSA System Admin Prep

The clearest difference is price: TRN App at Free against CSA System Admin Prep's $4.99. TRN App also leads on iOS requirement (13.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

TRN App is free to download; CSA System Admin Prep costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | TRN App | CSA System Admin Prep |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 45 MB | 34 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Training Response Network, Inc.](https://appshunter.io/developer/971483232) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### TRN App

[App page](https://appshunter.io/ios/app/trn-app/id6443707193)

**Features:** macOS Compatibility

**In-app purchases:** none


### CSA System Admin Prep

[App page](https://appshunter.io/ios/app/csa-system-admin-prep/id6778278942)

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

**In-app purchases:** none


## Frequently asked questions

### Is TRN App free?

TRN App is free to download, with no in-app purchases.

### Is CSA System Admin Prep free?

CSA System Admin Prep costs $4.99, with no in-app purchases.

### Do TRN App or CSA System Admin Prep have ads?

Neither TRN App nor CSA System Admin Prep shows ads.

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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.*