# Direct Proportion vs CompTIA Security+ A+ Trainer

The clearest difference is in-app purchases: Direct Proportion at none against CompTIA Security+ A+ Trainer's 6. Direct Proportion also leads on iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. CompTIA Security+ A+ Trainer sells 5 one-off in-app purchases. Direct Proportion asks for nothing beyond the download.

## The numbers

| Metric | Direct Proportion | CompTIA Security+ A+ Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 50 MB | 82 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Science Education Institute](https://appshunter.io/developer/1439710468) | [LE Commsulting GmbH](https://appshunter.io/developer/927359665) |

## What reviewers say

### Direct Proportion

[App page](https://appshunter.io/ios/app/direct-proportion/id6736588837)

**Features:** macOS Compatibility

**In-app purchases:** none


### CompTIA Security+ A+ Trainer

[App page](https://appshunter.io/ios/app/comptia-security-plus-a-plus-trainer/id6762133145)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Security+ V7 Objectives (EN) | $6.99 | one-time |
| Security Architecture (EN) | $6.99 | one-time |
| Security Operations (EN) | $6.99 | one-time |
| Security PM & Oversight (EN) | $6.99 | one-time |
| CompTIA Security+ SY0-701 (EN) | $24.99 | one-time |


## Frequently asked questions

### Is Direct Proportion free?

Direct Proportion is free to download, with no in-app purchases.

### Is CompTIA Security+ A+ Trainer free?

CompTIA Security+ A+ Trainer is free to download, with in-app purchases available.

### Do Direct Proportion or CompTIA Security+ A+ Trainer have ads?

Neither Direct Proportion nor CompTIA Security+ A+ Trainer 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.*