# Defense Zone 3 HD vs Orbital Defense Protocol

The clearest difference is price: Defense Zone 3 HD at Free against Orbital Defense Protocol's $0.99. Orbital Defense Protocol's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Defense Zone 3 HD is free to download; Orbital Defense Protocol costs $0.99 up front. Defense Zone 3 HD sells 6 one-off in-app purchases. Orbital Defense Protocol asks for nothing beyond the download.

## The numbers

| Metric | Defense Zone 3 HD | Orbital Defense Protocol |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (2.5K ratings)](https://appshunter.io/ios/app/defense-zone-3-hd/id1020270390/reviews)** | — |
| Number of ratings | **2.5K** | — |
| Positive reviews | 68.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 378 MB | 68 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Artem Kotov](https://appshunter.io/developer/489472295) | [Carlos Nieto](https://appshunter.io/developer/1896214451) |

## What reviewers say

### Defense Zone 3 HD

[App page](https://appshunter.io/ios/app/defense-zone-3-hd/id1020270390)

Defend your territory against relentless enemy armies in this action-strategy game. Strategically place and upgrade a variety of turrets, utilizing special abilities to overcome increasingly challenging waves. Enjoy dynamic battles with stunning visuals and flexible difficulty settings.

**Highlights:** Variety of turrets, Special abilities, Flexible difficulty levels, Diverse landscapes, Strategic placement and upgrades, Dynamic battles

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3000 Coins | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 9000 Coins | $4.99 | one-time |
| 20250 Coins | $9.99 | one-time |
| 56250 Coins | $24.99 | one-time |
| 262500 Coins | $99.99 | one-time |

**What reviewers like**

- 🚀 Great graphics
- 🚀 Fun gameplay
- 👍 Challenging levels
- 👍 Addictive tower defense experience

**What reviewers complain about**

- 🐛 Crashes and bugs
- 🐛 Unplayable on certain devices
- 💰 Pay-to-win mechanics
- 💰 Difficult to progress without spending money
- 🕹️ Menus and UI get in the way of gameplay

**Reported bugs**

- Constant crashes
- Inverted/flipped screen after ads
- Inability to save progress

**Requested features**

- Endless mode
- Better zoom and camera controls
- More detailed weapon information


### Orbital Defense Protocol

[App page](https://appshunter.io/ios/app/orbital-defense-protocol/id6766149607)

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

**In-app purchases:** none


## Frequently asked questions

### Is Defense Zone 3 HD free?

Defense Zone 3 HD is free to download, with in-app purchases available.

### Is Orbital Defense Protocol free?

Orbital Defense Protocol costs $0.99, with no in-app purchases.

### Do Defense Zone 3 HD or Orbital Defense Protocol have ads?

Defense Zone 3 HD shows ads; Orbital Defense Protocol does not.

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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.*