D vs Sky Defense
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
D
Experience a zombie apocalypse from a first-person perspective with stunning graphics and realistic weaponry. Survive hostile environments, unleash firepower, and choose from various locations and guns in this intense shooter.
- First-person camera view
- Endless game mode
- High-definition visuals
- Realistic weaponry
- Simulator-like controls
- Multiple locations and guns
- Supports 3 languages
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First person view perspective, better graphics and visuals that really make you feel that you’re in a world ravaged by zombies.D-Day:Trust is the best shoot zombies game you have been looking for. I’m a one of the few survivors of a devastating zombie apocalypse.Survive in a hostile environment and unleash hell fire from your gunner seat! FEATURES - First person camera view - Endless game mode - Easy to learn and shoot - Experience high-definition visuals, intense scenarios and realistic weaponry - Simulator-like controls - Different locations and guns to choose - Support for 3 languages
Sky Defense
Defend your airspace in an intense arcade shooter against an alien invasion. Engage in fast-paced, vertical ground-to-air combat with realistic visuals and a thrilling story. Perfect for quick bursts of action.
- Fast-paced arcade shooting
- Unique vertical gameplay
- Thrilling story mode
- Realistic visuals and sound
- Pick-up-and-play accessibility
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Sky Defense: War Duty: Rise up and defend your airspace! Brace yourself for an arcade shooter showdown where the sky's the limit... for your enemies! In Sky Defense: War Duty, you'll stand as the last line of defense against a relentless alien invasion, raining down fire and fury from your fortified base. Ready to answer the call of duty? Sky Defense: War Duty offers: - Fast-paced, adrenaline-pumping arcade shooting: Simple controls, explosive action, and tons of enemies to blast! - Unique vertical gameplay: Defend from below, watch the skies, and master the art of ground-to-air combat. - Thrilling story: Experience the grit and determination of defending your homeland against all odds. - Realistic visuals and sound: Immerse yourself in the heat of battle with stunning graphics and bone-crushing explosions. - Pick-up-and-play fun: Perfect for casual players looking for a quick burst of action. Download Sky Defense: War Duty now and become a hero! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://horusent.com/privacy-policy/
Screenshots
Verdict
The clearest difference is review sentiment: D at 100% against Sky Defense's 51%. D also leads on ads (none vs shown) and rating (4.8 vs 4.6). Sky Defense's advantage is update cadence (every 2 months vs every 15 months) and ratings volume (11K vs 4). On price, in-app purchases, monetization model and device support 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. D sells 4 one-off in-app purchases and Sky Defense sells 32 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
D holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Sky Defense has 11K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of D's written reviews are positive against 51% of Sky Defense's.
D ships an update every 15 months, Sky Defense every 2 months. The most recent releases landed on August 20, 2026 and September 24, 2026 respectively.
| Parameter | D | Sky Defense |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | 4.6 (11K ratings) |
| Positive reviews | 100.0% of reviews — better | 50.6% of reviews |
| Number of ratings | 4 | 11K — better |
| Update frequency | Every 15 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 253 MB | 313 MB |
| Age rating | 12+ | 12+ |
| Developer | 勇虎 具 | Horus |
Customer experience
D
Sky Defense
Bugs and requests
D
Not enough reviews yet to summarise bugs or requests.
Sky Defense
Reported bugs
2 issues- Unable to summon airstrike
- Game only supported to level 180
Requested features
2 requests- New updates and levels
- Translator for chat
In-app purchases
D
- 5000COIN$0.99
- 12000COIN$1.99
- Remove AD$1.99
Show 1 moreShow fewer
- 39990COIN$4.99
Sky Defense
- Remove Ads End Game$1.99
- Twin M2 Browning Sale 50%$1.99
- Small Starter Pack$1.99
Show 29 moreShow fewer
- Pocket of Gold$2.99
- 9K111 Fagot Sale 30%$2.99
- Twin M2 Browning Sale 30%$2.99
- Pocket of Gold First Purchase$2.99
- Extra Pack$4.99
- Bag of Gold$4.99
- Twin Type 92 Sale 50%$4.99
- Unique Handful of Gold$4.99
- Twin M2 Browning$4.99
- Medium Starter Pack$4.99
- Handful of Gold First Purchase$4.99
- Twin Type 92 Sale 30%$6.99
- Extra Starter Pack$6.99
- Twin Type 92$9.99
- Twin M.A 306 Sale 50%$9.99
- PILE OF CASH$9.99
- Package 7 Days$9.99
- Pile of Gold$9.99
- Pile of Gold First Purchase$9.99
- Special Pack Sale 20%$18.99
- BAG OF CASH$19.99
- Bag of Gold$19.99
- Bag of Gold Bonus 800 Gold$19.99
- Twin MG42 BBQ$19.99
- Bag of Gold First Purchase$19.99
- Special Pack$23.99
- Twin Sentry Chaingun$24.99
- Case of Gold$29.99
- CASE OF CASH$29.99
