# H2O Academy vs Train Loop

The clearest difference is ads: H2O Academy at none against Train Loop's shown. On price, in-app purchases, device support and iOS requirement 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 | Train Loop |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | — | Daily |
| Monetization | Free | — |
| Size | 63 MB | 192 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Dargan M. Frierson](https://appshunter.io/developer/1209897089) | [OkiGen Games](https://appshunter.io/developer/1551346306) |

## 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


### Train Loop

[App page](https://appshunter.io/ios/app/train-loop/id6738042046)

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

**In-app purchases:** none


## Frequently asked questions

### Is H2O Academy free?

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

### Is Train Loop free?

Train Loop is free to download, with no in-app purchases.

### Do H2O Academy or Train Loop have ads?

Train Loop shows ads; H2O Academy does not.

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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.*