# Combine 4 vs Gravity 4 Strategy

The clearest difference is in-app purchases: Combine 4 at none against Gravity 4 Strategy's 1. Combine 4 also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.0). Gravity 4 Strategy's advantage is update cadence (weekly vs every 4 months). On price and device support there is nothing between them.

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

Combine 4 ships an update every 4 months, Gravity 4 Strategy weekly. The most recent releases landed on October 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Combine 4 | Gravity 4 Strategy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Size | 13 MB | 29 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Marstin Limited](https://appshunter.io/developer/879922449) | [Samuel Jocelyn](https://appshunter.io/developer/635119562) |

## What reviewers say

### Combine 4

[App page](https://appshunter.io/ios/app/combine-4-board-connection/id1019590879)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Combine 4 free?

Combine 4 is free to download, with no in-app purchases.

### Is Gravity 4 Strategy free?

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

### Do Combine 4 or Gravity 4 Strategy have ads?

Gravity 4 Strategy shows ads; Combine 4 does not.

### Which is updated more often, Combine 4 or Gravity 4 Strategy?

Combine 4 ships an update every 4 months, and Gravity 4 Strategy weekly. Most recently, Combine 4 was updated on October 4, 2026 and Gravity 4 Strategy on October 25, 2026.

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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.*