# インベーダー J vs Galaxy89

The clearest difference is ads: インベーダー J at none against Galaxy89's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 25, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | インベーダー J | Galaxy89 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 18 MB | 96 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [takayuki atsumi](https://appshunter.io/developer/1495474977) | [TAKASHI HANABE](https://appshunter.io/developer/1062455203) |

## What reviewers say

### インベーダー J

[App page](https://appshunter.io/ios/app/j-invaders-j/id1554028591)

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

**In-app purchases:** none


### Galaxy89

[App page](https://appshunter.io/ios/app/galaxy89/id1564636876)

Experience a retro 1980s shooter where you pilot an advanced space battleship to defeat an evil Galactic Empire. Navigate through enemy formations and aim for the top of the leaderboards in this classic arcade-style game.

**Highlights:** Retro 1980s shooter gameplay, Pilot an advanced space battleship, Defeat enemy formations, Compete in rankings, Virtual pad controls, Two stages

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

**In-app purchases:** none


## Frequently asked questions

### Is インベーダー J free?

インベーダー J is free to download, with no in-app purchases.

### Is Galaxy89 free?

Galaxy89 is free to download, with no in-app purchases.

### Do インベーダー J or Galaxy89 have ads?

Galaxy89 shows ads; インベーダー J does not.

### Which is updated more often, インベーダー J or Galaxy89?

インベーダー J ships an update every 2 months, and Galaxy89 every 2 months. Most recently, インベーダー J was updated on September 25, 2026 and Galaxy89 on August 18, 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.*