# Core Defense vs air

The clearest difference is price: Core Defense at Free against air's $4.99. Core Defense also leads on update cadence (fortnightly vs every 9 months) and ratings volume (459 vs 19). air's advantage is ads (none vs shown) and review sentiment (89% vs 61%). On in-app purchases, device support and iOS requirement there is nothing between them.

Core Defense is free to download; air costs $4.99 up front. Core Defense sells 5 one-off in-app purchases and air sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Core Defense holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Core Defense has 459 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 61% of Core Defense's written reviews are positive against 89% of air's, so the app with the better star average is not the one people write more warmly about.

Core Defense ships an update fortnightly, air every 9 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Core Defense | air |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (459 ratings)](https://appshunter.io/ios/app/core-defense/id1546364145/reviews)** | [4.5 (19 ratings)](https://appshunter.io/ios/app/air-star/id6445810380/reviews) |
| Number of ratings | **459** | 19 |
| Positive reviews | 60.9% of reviews | **88.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 9 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 43 MB | 75 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Sonderland Games UG haftungsbeschrankt](https://appshunter.io/developer/1546364147) | [Brendan Roarty](https://appshunter.io/developer/1673920112) |

## What reviewers say

### Core Defense

[App page](https://appshunter.io/ios/app/core-defense/id1546364145)

Experience a unique blend of tower defense, roguelike strategy, and deckbuilding. Engage in challenging waves, unlock new rewards, and explore diverse playstyles. This game offers both quick sessions and deep mastery for endless replayability.

**Highlights:** Roguelike mechanics, Deckbuilding elements, Unlockable rewards, Diverse playstyles, High difficulty, Short session play

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25x PowerPack | $0.99 | one-time |
| 100x PowerPack | $1.99 | one-time |
| Mastery Expansion | $2.99 | one-time |
| Premium Package | $4.99 | one-time |
| Complete Bundle | $5.99 | one-time |

**What reviewers like**

- 🎮 Engaging roguelike tower defense gameplay
- 🔄 High replay value with randomized tower selection
- 🧩 Strategic maze-building mechanics
- ✨ No pay-to-win elements
- 📱 Works smoothly on multiple devices

**What reviewers complain about**

- 💰 Aggressive monetization behind paywall
- 🐛 Frequent crashes and white screen flashes
- 🔋 High battery consumption
- 📚 Lacks tutorial for new players
- 🎨 Plain graphics and minimal animations

**Reported bugs**

- Game crashes to white screen on startup
- Fails to load on first tower select
- Start wave button becomes unresponsive
- White screen flashes during gameplay
- Game returns to main menu unexpectedly

**Requested features**

- Tutorial system for new players
- More tower variety and types
- Stronger upgrade synergies
- More creative tower effects
- Better enemy designs and animations


### air

[App page](https://appshunter.io/ios/app/air-star/id6445810380)

Defend against incoming luggage as a frog in this tower defense game. Purchase upgrades for towers and health to progress further. Customize your character with unlockable outfits and hats.

**Highlights:** 70+ unique upgrades, Ultimate Upgrades for endgame, 7 unlockable levels, Character customization (hats, skins), Unique achievements

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Retry Tokens | $0.99 | one-time |
| Star Stack | $0.99 | one-time |
| Star Bundle | $1.99 | one-time |


## Frequently asked questions

### Is Core Defense free?

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

### Is air free?

air costs $4.99, and also offers in-app purchases.

### Which has better reviews, Core Defense or air?

Core Defense is rated higher. Core Defense averages 4.7 out of 5 from 459 ratings, while air averages 4.5 from 19 ratings.

### Do Core Defense or air have ads?

Core Defense shows ads; air does not.

### Which is updated more often, Core Defense or air?

Core Defense ships an update fortnightly, and air every 9 months. Most recently, Core Defense was updated on October 13, 2026 and air on October 7, 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.*