# Learn Underwater vs Grade Six Science

The clearest difference is in-app purchases: Grade Six Science at none against Learn Underwater's 1. Learn Underwater's advantage is iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Learn Underwater sells 1 one-off in-app purchase. Grade Six Science asks for nothing beyond the download.

## The numbers

| Metric | Learn Underwater | Grade Six Science |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 21 MB | 472 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) | [360ed Pte Ltd](https://appshunter.io/developer/1459468188) |

## What reviewers say

### Learn Underwater

[App page](https://appshunter.io/ios/app/learn-underwater/id987875032)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ad | $0.99 | one-time |


### Grade Six Science

[App page](https://appshunter.io/ios/app/grade-six-science/id6747956438)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Underwater free?

Learn Underwater is free to download, with in-app purchases available.

### Is Grade Six Science free?

Grade Six Science is free to download, with no in-app purchases.

### Do Learn Underwater or Grade Six Science have ads?

Neither Learn Underwater nor Grade Six Science 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.*