# Alien Observer vs Arrow Mismatch

The clearest difference is in-app purchases: Arrow Mismatch at none against Alien Observer's 10. Arrow Mismatch also leads on iOS requirement (15.0 vs 17.6). Alien Observer's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Alien Observer sells 10 in-app purchases, starting at $29.99 per year. Arrow Mismatch asks for nothing beyond the download.

Alien Observer ships an update every 3 weeks, Arrow Mismatch every 6 weeks. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Alien Observer | Arrow Mismatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/arrow-mismatch/id6785847768/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | — | Ad-supported |
| Size | 640 MB | 234 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | +12 | 4+ |
| Developer | [Solebo LTD](https://appshunter.io/developer/1788368371) | [Dinh Hieu Nguyen](https://appshunter.io/developer/6804957290) |

## What reviewers say

### Alien Observer

[App page](https://appshunter.io/ios/app/alien-observer/id6768049383)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Season Pass | $29.99 | per year |
| Full Reactor Refill | $1.99 | one-time |
| Data Storage License | $1.99 | one-time |
| Pet: Laika | $3.99 | one-time |
| DLC Pet: Ham | $3.99 | one-time |
| Pet: Cow | $3.99 | one-time |
| Pet: HAL9000 | $3.99 | one-time |
| Advanced Autopilot | $4.99 | one-time |
| DLC Pets Pack | $9.99 | one-time |
| Chapter 2 License | $19.99 | one-time |


### Arrow Mismatch

[App page](https://appshunter.io/ios/app/arrow-mismatch/id6785847768)

A casual puzzle game that tests observation and reaction speed. Players match arrow directions to tile labels, with increasing difficulty as levels progress. It's designed for quick, enjoyable brain training.

**Highlights:** Observation skill challenge, Reaction speed test, Simple, easy-to-learn rules, Gradually increasing difficulty, Brain-training for active minds, Direction recognition and quick judgment

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

**In-app purchases:** none


## Frequently asked questions

### Is Alien Observer free?

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

### Is Arrow Mismatch free?

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

### Do Alien Observer or Arrow Mismatch have ads?

Both Alien Observer and Arrow Mismatch show ads.

### Which is updated more often, Alien Observer or Arrow Mismatch?

Alien Observer ships an update every 3 weeks, and Arrow Mismatch every 6 weeks. Most recently, Alien Observer was updated on October 9, 2026 and Arrow Mismatch on October 3, 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.*