# Alien Invasion Cannon Shooter vs Orbitfall

The clearest difference is update cadence: Alien Invasion Cannon Shooter at daily against Orbitfall's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Alien Invasion Cannon Shooter sells 1 one-off in-app purchase and Orbitfall sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Alien Invasion Cannon Shooter ships an update daily, Orbitfall fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Alien Invasion Cannon Shooter | Orbitfall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/alien-invasion-cannon-shooter/id6760867690/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 56 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Joseph Wyrostek](https://appshunter.io/developer/1886575847) | [StackForge Studios](https://appshunter.io/developer/1896315914) |

## What reviewers say

### Alien Invasion Cannon Shooter

[App page](https://appshunter.io/ios/app/alien-invasion-cannon-shooter/id6760867690)

Defend against endless waves of alien invaders with a powerful ground cannon. Test your reflexes in this fast-paced arcade shooter, aiming to survive increasingly difficult attacks and achieve high scores. Unlock a support cannon to aid in your defense.

**Highlights:** Fast arcade cannon gameplay, Endless alien invasion action, Increasing difficulty, Unlockable support cannon, Boss battles, Addictive score chasing, Quick play sessions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Unlock | $0.99 | one-time |


### Orbitfall

[App page](https://appshunter.io/ios/app/orbitfall-gravity-fall/id6780302674)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StackForge Play Pass Monthly | $2.99 | per month |
| StackForge Play Pass Annual | $14.99 | per year |
| Orbitfall Full Game Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Alien Invasion Cannon Shooter free?

Alien Invasion Cannon Shooter is free to download, with in-app purchases available.

### Is Orbitfall free?

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

### Do Alien Invasion Cannon Shooter or Orbitfall have ads?

Neither Alien Invasion Cannon Shooter nor Orbitfall shows ads.

### Which is updated more often, Alien Invasion Cannon Shooter or Orbitfall?

Alien Invasion Cannon Shooter ships an update daily, and Orbitfall fortnightly. Most recently, Alien Invasion Cannon Shooter was updated on October 31, 2026 and Orbitfall on October 31, 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.*