# H2O Academy vs Drone Destroyer

The clearest difference is device support: H2O Academy at 3 against Drone Destroyer's —. H2O Academy also leads on iOS requirement (12.0 vs 15.0). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | H2O Academy | Drone Destroyer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/h2o-academy/id1662161180/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | — |
| Monetization | Free | — |
| Size | 63 MB | 7 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Dargan M. Frierson](https://appshunter.io/developer/1209897089) | [Maxim Rudyi](https://appshunter.io/developer/1784674766) |

## What reviewers say

### H2O Academy

[App page](https://appshunter.io/ios/app/h2o-academy/id1662161180)

Prepare for your Level 1 Water Treatment Plant Operator exam with this app. It focuses exclusively on the math required, offering clear explanations and unlimited practice problems with hints and answers. Test your knowledge with quizzes designed for practical application.

**Highlights:** Targeted math topics for Level 1 exam, Explanations of math concepts, Step-by-step problem-solving guides, Unlimited practice problems, Hints and answers for practice, Knowledge testing quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


### Drone Destroyer

[App page](https://appshunter.io/ios/app/drone-destroyer/id6739775809)

**In-app purchases:** none


## Frequently asked questions

### Is H2O Academy free?

H2O Academy is free to download, with no in-app purchases.

### Is Drone Destroyer free?

Drone Destroyer is free to download, with no in-app purchases.

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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.*