# Gravity One vs Virus Versus™

The clearest difference is price: Gravity One at Free against Virus Versus™'s $1.99. Gravity One also leads on update cadence (every 9 months vs every 78 months). Virus Versus™'s advantage is iOS requirement (15.6 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Gravity One is free to download; Virus Versus™ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gravity One ships an update every 9 months, Virus Versus™ every 78 months. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Gravity One | Virus Versus™ |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/virus-versus/id923028971/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 78 months |
| Monetization | — | Paid |
| Size | 15 MB | 300 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Sami Salkosuo](https://appshunter.io/developer/820432278) | [Edward Ganges](https://appshunter.io/developer/349422589) |

## What reviewers say

### Gravity One

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Virus Versus™

[App page](https://appshunter.io/ios/app/virus-versus/id923028971)

Assume the role of an alien orchestrating a global virus and zombie apocalypse. Terraform the world, dehumanize humans, and abduct victims while avoiding the revenge of the undead. Enjoy fun graphics, upbeat music, and a unique apocalyptic theme.

**Highlights:** Alien virus zombie apocalypse simulation, World terraforming with Bio Poop, Dehumanize and abduct humans, Avoid undead revenge, Fun, bright graphics, Upbeat music and sound effects

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

**In-app purchases:** none


## Frequently asked questions

### Is Gravity One free?

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

### Is Virus Versus™ free?

Virus Versus™ costs $1.99, with no in-app purchases.

### Do Gravity One or Virus Versus™ have ads?

Neither Gravity One nor Virus Versus™ shows ads.

### Which is updated more often, Gravity One or Virus Versus™?

Gravity One ships an update every 9 months, and Virus Versus™ every 78 months. Most recently, Gravity One was updated on October 2, 2026 and Virus Versus™ on September 29, 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.*