# Gravity Guards vs Grade Six Science

The clearest difference is in-app purchases: Grade Six Science at none against Gravity Guards's 14. Grade Six Science also leads on iOS requirement (13.0 vs 16.6). On price, ads and device support there is nothing between them.

Both are free to download. Gravity Guards sells 13 one-off in-app purchases. Grade Six Science asks for nothing beyond the download.

## The numbers

| Metric | Gravity Guards | Grade Six Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gravity-guards-science-idle/id6593686824/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 296 MB | 472 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Valeriy Kuznetsov](https://appshunter.io/developer/1760340772) | [360ed Pte Ltd](https://appshunter.io/developer/1459468188) |

## What reviewers say

### Gravity Guards

[App page](https://appshunter.io/ios/app/gravity-guards-science-idle/id6593686824)

Engage in an epic auto-battler strategy game where you assemble a team of legendary scientists to learn and apply physics principles. Battle rogue Omnics and protect the world by harnessing scientific forces in a fun, interactive adventure.

**Highlights:** Learn physics through engaging gameplay, Assemble legendary scientist characters, Auto-battler strategy with physics mechanics, Interactive learning and smart battles, Gamified education for all ages, Teacher and parent-approved content

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Röntgoum's Project | $0.99 | one-time |
| Crystals (100) | $0.99 | one-time |
| Box of Lights | $0.99 | one-time |
| Röntgoum's Project | $1.99 | one-time |
| Röntgoum's Project Sale | $2.99 | one-time |
| Quantum Generator Pack | $2.99 | one-time |
| Crystals (100) | $4.99 | one-time |
| Röntgoum's Project | $5.99 | one-time |
| Flow Pact Bundle | $5.99 | one-time |
| Crystals (1000) | $7.99 | one-time |
| Mind Modulator | $9.99 | one-time |
| Crystals (5000) | $39.99 | one-time |
| Crystals (10000) | $69.99 | 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 Gravity Guards free?

Gravity Guards 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 Gravity Guards or Grade Six Science have ads?

Neither Gravity Guards 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.*