# Subtract One vs Gun Head Run

The clearest difference is in-app purchases: Subtract One at none against Gun Head Run's 1. Subtract One also leads on ads (none vs shown). Gun Head Run's advantage is update cadence (weekly vs every 30 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Gun Head Run sells 1 one-off in-app purchase. Subtract One asks for nothing beyond the download.

Subtract One ships an update every 30 months, Gun Head Run weekly. Both last shipped on November 1, 2026.

## The numbers

| Metric | Subtract One | Gun Head Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (17K ratings)](https://appshunter.io/ios/app/gun-head-run/id1633171432/reviews)** |
| Number of ratings | — | **17K** |
| Positive reviews | — | 33.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 162 MB |
| Requires iOS | **12.0** | 12.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Duo Pisceses, Inc.](https://appshunter.io/developer/850707063) | [MondayOFF](https://appshunter.io/developer/1448226898) |

## What reviewers say

### Subtract One

[App page](https://appshunter.io/ios/app/subtract-one/id1506850034)

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

**In-app purchases:** none


### Gun Head Run

[App page](https://appshunter.io/ios/app/gun-head-run/id1633171432)

Engage in a simple, free-to-play game that can be enjoyed in short bursts of free time. Experience fantastic gameplay with intuitive touch controls. Perfect for quick entertainment.

**Highlights:** Simple touch controls, Free to play, Short play sessions, Fantastic gameplay experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |

**What reviewers like**

- 🚀 Fun and addictive gameplay
- 👍 Great time-killer
- 💡 Potential for improvements

**What reviewers complain about**

- 🔥 Excessive ads and monetization
- 🐛 Bugs and glitches
- 🤯 Impossible to beat

**Reported bugs**

- Game crashes on launch
- Ads not working as intended
- Progress not saving properly

**Requested features**

- Permanent weapon upgrades
- More diverse gameplay and levels
- Reduced ads or optional ad-free mode


## Frequently asked questions

### Is Subtract One free?

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

### Is Gun Head Run free?

Gun Head Run is free to download, with in-app purchases available.

### Do Subtract One or Gun Head Run have ads?

Gun Head Run shows ads; Subtract One does not.

### Which is updated more often, Subtract One or Gun Head Run?

Subtract One ships an update every 30 months, and Gun Head Run weekly. Most recently, Subtract One was updated on November 1, 2026 and Gun Head Run on November 1, 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.*