# D vs Sky Defense

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.

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.

## The numbers

| Metric | D | Sky Defense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/d-daytrust/id1253841070/reviews)** | [4.6 (11K ratings)](https://appshunter.io/ios/app/sky-defense-war-duty/id6469495100/reviews) |
| Number of ratings | 4 | **11K** |
| Positive reviews | **100.0% of reviews** | 50.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 253 MB | 313 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [勇虎 具](https://appshunter.io/developer/938798671) | [Horus](https://appshunter.io/developer/1296722699) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-daytrust/id1253841070)

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.

**Highlights:** First-person camera view, Endless game mode, High-definition visuals, Realistic weaponry, Simulator-like controls, Multiple locations and guns, Supports 3 languages

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5000COIN | $0.99 | one-time |
| 12000COIN | $1.99 | one-time |
| Remove AD | $1.99 | one-time |
| 39990COIN | $4.99 | one-time |


### Sky Defense

[App page](https://appshunter.io/ios/app/sky-defense-war-duty/id6469495100)

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.

**Highlights:** Fast-paced arcade shooting, Unique vertical gameplay, Thrilling story mode, Realistic visuals and sound, Pick-up-and-play accessibility

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

**In-app purchases (32)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads End Game | $1.99 | one-time |
| Twin M2 Browning Sale 50% | $1.99 | one-time |
| Small Starter Pack | $1.99 | one-time |
| Pocket of Gold | $2.99 | one-time |
| 9K111 Fagot Sale 30% | $2.99 | one-time |
| Twin M2 Browning Sale 30% | $2.99 | one-time |
| Pocket of Gold First Purchase | $2.99 | one-time |
| Extra Pack | $4.99 | one-time |
| Bag of Gold | $4.99 | one-time |
| Twin Type 92 Sale 50% | $4.99 | one-time |
| Unique Handful of Gold | $4.99 | one-time |
| Twin M2 Browning | $4.99 | one-time |
| Medium Starter Pack | $4.99 | one-time |
| Handful of Gold First Purchase | $4.99 | one-time |
| Twin Type 92 Sale 30% | $6.99 | one-time |
| Extra Starter Pack | $6.99 | one-time |
| Twin Type 92 | $9.99 | one-time |
| Twin M.A 306 Sale 50% | $9.99 | one-time |
| PILE OF CASH | $9.99 | one-time |
| Package 7 Days | $9.99 | one-time |
| Pile of Gold | $9.99 | one-time |
| Pile of Gold First Purchase | $9.99 | one-time |
| Special Pack Sale 20% | $18.99 | one-time |
| BAG OF CASH | $19.99 | one-time |
| Bag of Gold | $19.99 | one-time |
| Bag of Gold Bonus 800 Gold | $19.99 | one-time |
| Twin MG42 BBQ | $19.99 | one-time |
| Bag of Gold First Purchase | $19.99 | one-time |
| Special Pack | $23.99 | one-time |
| Twin Sentry Chaingun | $24.99 | one-time |
| Case of Gold | $29.99 | one-time |
| CASE OF CASH | $29.99 | one-time |

**What reviewers like**

- 🚀 Great game
- 👍 Fun and challenging
- 👍 Realistic
- 👍 No ads option

**What reviewers complain about**

- 🐛 Sound issues
- 💰 Expensive in-app purchases
- 🔋 Ad-heavy gameplay
- 🔒 Political ads

**Reported bugs**

- Unable to summon airstrike
- Game only supported to level 180

**Requested features**

- New updates and levels
- Translator for chat


## Frequently asked questions

### Is D free?

D is free to download, with in-app purchases available.

### Is Sky Defense free?

Sky Defense is free to download, with in-app purchases available.

### Which has better reviews, D or Sky Defense?

D is rated higher. D averages 4.8 out of 5 from 4 ratings, while Sky Defense averages 4.6 from 11K ratings.

### Do D or Sky Defense have ads?

Sky Defense shows ads; D does not.

### Which is updated more often, D or Sky Defense?

D ships an update every 15 months, and Sky Defense every 2 months. Most recently, D was updated on August 20, 2026 and Sky Defense on September 24, 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.*