# Sky Force vs Salvage Protocol

The clearest difference is in-app purchases: Salvage Protocol at none against Sky Force's 4. Salvage Protocol also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Sky Force sells 4 one-off in-app purchases. Salvage Protocol asks for nothing beyond the download.

Sky Force ships an update every 2 months, Salvage Protocol every 2 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Sky Force | Salvage Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.1K ratings)](https://appshunter.io/ios/app/sky-force/id717233547/reviews)** | — |
| Number of ratings | **2.1K** | — |
| Positive reviews | 89.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 260 MB | 26 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | +4 |
| Developer | [Infinite Dreams Inc.](https://appshunter.io/developer/306712040) | [Seonggon Sim](https://appshunter.io/developer/1565259950) |

## What reviewers say

### Sky Force

[App page](https://appshunter.io/ios/app/sky-force/id717233547)

Experience a classic arcade shooter reborn with stunning 3D graphics and intuitive touch controls. Upgrade your ship, battle intense bosses, and compete in weekly tournaments against other players. Rescue fallen pilots for rewards and achieve victory in this action-packed scrolling shooter.

**Highlights:** Stunning 3D graphics, Intuitive touchscreen controls, Powerful ship upgrade system, Weekly player tournaments, Rescue fallen pilots for rewards, Multiple boss battles, In-game achievements

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Precious Cargo | $1.99 | one-time |
| Ads Removal | $3.99 | one-time |
| Plane Generator | $3.99 | one-time |
| SX2 - Star Doubler | $3.99 | one-time |

**What reviewers like**

- 🚀 Smooth gameplay
- 👍 Great graphics and sound
- 💎 Challenging but rewarding
- 🎮 Classic arcade-style shooter
- 🔋 Offline playable

**What reviewers complain about**

- 🐛 Crashes and performance issues
- ⏱️ Slow progression and long upgrade times
- 💰 Grindy to progress without in-app purchases
- 👎 Controls can be frustrating on mobile

**Reported bugs**

- Game crashes on launch for some users
- Saved progress not syncing across devices
- Ads not working as expected

**Requested features**

- More levels and content updates
- Controller support
- Ability to reset progress
- Customization options for the ship


### Salvage Protocol

[App page](https://appshunter.io/ios/app/salvage-protocol/id6787807172)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sky Force free?

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

### Is Salvage Protocol free?

Salvage Protocol is free to download, with no in-app purchases.

### Do Sky Force or Salvage Protocol have ads?

Sky Force shows ads; Salvage Protocol does not.

### Which is updated more often, Sky Force or Salvage Protocol?

Sky Force ships an update every 2 months, and Salvage Protocol every 2 weeks. Most recently, Sky Force was updated on October 14, 2026 and Salvage Protocol on October 4, 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.*