# Gravity One vs Gravity Ball Challenge

The clearest difference is price: Gravity One at Free against Gravity Ball Challenge's $2.99. Gravity One also leads on in-app purchases (none vs 1). Gravity Ball Challenge's advantage is update cadence (every 4 months vs every 9 months). On ads, device support and iOS requirement there is nothing between them.

Gravity One is free to download; Gravity Ball Challenge costs $2.99 up front. Gravity Ball Challenge sells 1 in-app purchase, starting at $1.99 per month. Gravity One asks for nothing beyond the download.

Gravity One ships an update every 9 months, Gravity Ball Challenge every 4 months. The most recent releases landed on May 17, 2026 and August 16, 2026 respectively.

## The numbers

| Metric | Gravity One | Gravity Ball Challenge |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Size | 15 MB | 6 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sami Salkosuo](https://appshunter.io/developer/820432278) | [Shun Isayama](https://appshunter.io/developer/1578976556) |

## What reviewers say

### Gravity One

[App page](https://appshunter.io/ios/app/gravity-one/id820432275)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gravity Ball Challenge

[App page](https://appshunter.io/ios/app/gravity-ball-challenge/id6648756546)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示（初週無料） | $1.99 | per month |


## Frequently asked questions

### Is Gravity One free?

Gravity One is free to download, with no in-app purchases.

### Is Gravity Ball Challenge free?

Gravity Ball Challenge costs $2.99, and also offers in-app purchases.

### Do Gravity One or Gravity Ball Challenge have ads?

Neither Gravity One nor Gravity Ball Challenge shows ads.

### Which is updated more often, Gravity One or Gravity Ball Challenge?

Gravity One ships an update every 9 months, and Gravity Ball Challenge every 4 months. Most recently, Gravity One was updated on May 17, 2026 and Gravity Ball Challenge on August 16, 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.*