# Gun Factor vs Sky Defense!

The clearest difference is rating: Gun Factor at 5.0 against Sky Defense!'s 1.0. Sky Defense!'s advantage is update cadence (every 3 days vs every 13 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Gun Factor holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Gun Factor ships an update every 13 months, Sky Defense! every 3 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Gun Factor | Sky Defense! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gun-factor/id1612796081/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/sky-defense/id6449708792/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 13 months | **Every 3 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 75 MB | 148 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [omer cetin](https://appshunter.io/developer/1584332419) | [Mustafa Ilker Goncu](https://appshunter.io/developer/1590036986) |

## What reviewers say

### Gun Factor

[App page](https://appshunter.io/ios/app/gun-factor/id1612796081)

Equip weapons with powerful add-ons to defeat relentless enemies. Clear all levels by strategically choosing two powers for each weapon. Enjoy a challenging and engaging combat experience.

**Highlights:** Weapon power-up customization, Strategic attachment selection, Enemy clearing gameplay, Level-based progression, Variety of weapon add-ons

**Features:** macOS Compatibility

**In-app purchases:** none


### Sky Defense!

[App page](https://appshunter.io/ios/app/sky-defense/id6449708792)

Build and expand your base to defend it from waves of attacking enemies. Strategically upgrade your defenses and conquer the skies.

**Highlights:** Expand your building, Defend against enemies, Strategic upgrades, Conquer the skies

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gun Factor free?

Gun Factor is free to download, with no in-app purchases.

### Is Sky Defense! free?

Sky Defense! is free to download, with no in-app purchases.

### Which has better reviews, Gun Factor or Sky Defense!?

Gun Factor is rated higher. Gun Factor averages 5.0 out of 5 from 1 ratings, while Sky Defense! averages 1.0 from 1 ratings.

### Do Gun Factor or Sky Defense! have ads?

Both Gun Factor and Sky Defense! show ads.

### Which is updated more often, Gun Factor or Sky Defense!?

Gun Factor ships an update every 13 months, and Sky Defense! every 3 days. Most recently, Gun Factor was updated on November 3, 2026 and Sky Defense! on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*