# Alien Invaders AR vs Rat Killer Robot Invasion

The clearest difference is review sentiment: Alien Invaders AR at 75% against Rat Killer Robot Invasion's 31%. Alien Invaders AR also leads on in-app purchases (none vs 17) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Rat Killer Robot Invasion sells 17 in-app purchases, starting at $4.99 per 7 days. Alien Invaders AR asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 14, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Alien Invaders AR | Rat Killer Robot Invasion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (2K ratings)](https://appshunter.io/ios/app/rat-killer-robot-invasion/id6464372285/reviews)** |
| Number of ratings | — | **2K** |
| Positive reviews | **75.0% of reviews** | 31.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 353 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Anirudh Natarajan](https://appshunter.io/developer/1524167253) | [TapNation](https://appshunter.io/developer/1483575279) |

## What reviewers say

### Alien Invaders AR

[App page](https://appshunter.io/ios/app/alien-invaders-ar/id1415100650)

Engage in an augmented reality shooter where you defend your city from alien invaders. This game places aliens around you, allowing for gameplay anywhere without needing a specific surface. Adjust difficulty settings to customize your experience.

**Highlights:** Augmented reality gameplay, Playable anywhere, Alien radar system, Adjustable difficulty settings

**In-app purchases:** none


### Rat Killer Robot Invasion

[App page](https://appshunter.io/ios/app/rat-killer-robot-invasion/id6464372285)

Embark on an epic quest to exterminate waves of invading rats with futuristic weapons. Collect in-game currency to unlock new zones, upgrade your robot companion, and customize its appearance. Explore diverse worlds and face challenging puzzles and boss battles.

**Highlights:** Rat extermination action, Robot customization, Weapon collection and upgrades, Diverse world exploration, Puzzles and boss battles, Collect money and gems

**Features:** macOS Compatibility

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Membership - Weekly | $4.99 | per 7 days |
| Elite Membership - Weekly | $8.99 | per 7 days |
| Elite Membership - Monthly | $24.99 | per month |
| Skip It - Small Pack | $0.99 | one-time |
| One Time Offer | $1.99 | one-time |
| Handful Of Crystals | $1.99 | one-time |
| Bunch Of Crystals | $4.99 | one-time |
| Skip It - Medium Pack | $8.99 | one-time |
| Pile Of Crystals | $8.99 | one-time |
| Rats Pass | $9.99 | one-time |
| Small Bundle | $11.99 | one-time |
| Master Mode | $15.99 | one-time |
| Starter Pack | $15.99 | one-time |
| Medium Bundle | $24.99 | one-time |
| Limited Offer Pack | $29.99 | one-time |
| Premium Offer | $39.99 | one-time |
| Crate Of Crystals | $89.99 | one-time |

**What reviewers like**

- 👍 Fun gameplay
- 🦂 Scorpion mech character

**What reviewers complain about**

- 🐛 Glitchy and buggy
- 🕰️ Excessive ads
- ⚠️ Imbalanced game mechanics
- 💰 Progression blocked by premium currency

**Reported bugs**

- Character flipping upside down or flying across the board
- NPCs getting stuck in portals or on walls
- Incorrect item/reward drops from chests
- Launching player off the screen
- Robot unable to keep legs on the ground and rolling around

**Requested features**

- Optimize performance and fix bugs
- Improve game balance and progression
- Add more content and features
- Provide better customer support


## Frequently asked questions

### Is Alien Invaders AR free?

Alien Invaders AR is free to download, with no in-app purchases.

### Is Rat Killer Robot Invasion free?

Rat Killer Robot Invasion is free to download, with in-app purchases available.

### Do Alien Invaders AR or Rat Killer Robot Invasion have ads?

Rat Killer Robot Invasion shows ads; Alien Invaders AR does not.

### Which is updated more often, Alien Invaders AR or Rat Killer Robot Invasion?

Alien Invaders AR ships an update every 10 days, and Rat Killer Robot Invasion every 10 days. Most recently, Alien Invaders AR was updated on October 14, 2026 and Rat Killer Robot Invasion on October 22, 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.*