Gun Factor vs Sky Defense!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Gun Factor
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.
- Weapon power-up customization
- Strategic attachment selection
- Enemy clearing gameplay
- Level-based progression
- Variety of weapon add-ons
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Are you ready to give different weapons great powers with amazing add-ons? Choose 2 powers for each weapon and don't let relentless enemies get their hands on it. Clear all the enemies from various areas and complete all the levels. We wish you pleasant and happy games.
Sky Defense!
Build and expand your base to defend it from waves of attacking enemies. Strategically upgrade your defenses and conquer the skies.
- Expand your building
- Defend against enemies
- Strategic upgrades
- Conquer the skies
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Go upstairs, expand your building and defend it against incoming enemies!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Gun Factor | Sky Defense! |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 13 months | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 148 MB |
| Age rating | 4+ | 9+ |
| Developer | omer cetin | Mustafa Ilker Goncu |
In-app purchases
Gun Factor
No in-app purchases
Sky Defense!
No in-app purchases
Questions
Is Gun Factor free?
Is Sky Defense! free?
Which has better reviews, Gun Factor or Sky Defense!?
Do Gun Factor or Sky Defense! have ads?
Which is updated more often, Gun Factor or Sky Defense!?
Other comparisons
