# Gravity 4 Strategy vs Four Up Duel

The clearest difference is in-app purchases: Four Up Duel at none against Gravity 4 Strategy's 1. Gravity 4 Strategy's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Gravity 4 Strategy sells 1 one-off in-app purchase. Four Up Duel asks for nothing beyond the download.

## The numbers

| Metric | Gravity 4 Strategy | Four Up Duel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Weekly | — |
| Size | 29 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Samuel Jocelyn](https://appshunter.io/developer/635119562) | [Nathan Guy](https://appshunter.io/developer/1130678492) |

## What reviewers say

### Gravity 4 Strategy

[App page](https://appshunter.io/ios/app/gravity-4-strategy/id6761395131)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gravity 4 Strategy - NoAds | $2.99 | one-time |


### Four Up Duel

[App page](https://appshunter.io/ios/app/four-up-duel/id6788474819)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gravity 4 Strategy free?

Gravity 4 Strategy is free to download, with in-app purchases available.

### Is Four Up Duel free?

Four Up Duel is free to download, with no in-app purchases.

### Do Gravity 4 Strategy or Four Up Duel have ads?

Both Gravity 4 Strategy and Four Up Duel show 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.*