# Barrel Defender vs Mr Comet

The clearest difference is iOS requirement: Mr Comet at 12.2 against Barrel Defender's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Barrel Defender costs $0.99 and Mr Comet $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Barrel Defender ships an update every 39 months, Mr Comet every 37 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Barrel Defender | Mr Comet |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/barrel-defender-galaxy/id321991078/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 37 months** |
| Monetization | Paid | — |
| Size | 33 MB | 25 MB |
| Requires iOS | 15.6 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Stefan Preuss](https://appshunter.io/developer/307563428) | [Anthony Hindle](https://appshunter.io/developer/1057765652) |

## What reviewers say

### Barrel Defender

[App page](https://appshunter.io/ios/app/barrel-defender-galaxy/id321991078)

Defend your energy barrels from alien invaders in this retro arcade space shooter. Enjoy simple, intuitive controls and blast through waves of enemies with various weapons and challenging boss fights.

**Highlights:** Two game modes: endless and wave, 25 alien-filled waves, Variety of aliens and movement patterns, Boss enemy battles, Weapon power-ups, Easy finger-slide controls

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

**In-app purchases:** none


### Mr Comet

[App page](https://appshunter.io/ios/app/mr-comet/id1126482889)

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

**In-app purchases:** none


## Frequently asked questions

### Is Barrel Defender free?

Barrel Defender costs $0.99, with no in-app purchases.

### Is Mr Comet free?

Mr Comet costs $0.99, with no in-app purchases.

### Do Barrel Defender or Mr Comet have ads?

Neither Barrel Defender nor Mr Comet shows ads.

### Which is updated more often, Barrel Defender or Mr Comet?

Barrel Defender ships an update every 39 months, and Mr Comet every 37 months. Most recently, Barrel Defender was updated on October 13, 2026 and Mr Comet on October 15, 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.*