# Alien Motion Detector vs Justicetrix

The clearest difference is rating: Justicetrix at 5.0 against Alien Motion Detector's 3.9. Alien Motion Detector's advantage is in-app purchases (none vs 2) and ratings volume (31 vs 1). On update cadence, ads and device support there is nothing between them.

Alien Motion Detector costs $1.99 and Justicetrix $2.99 up front. Justicetrix sells 2 one-off in-app purchases. Alien Motion Detector asks for nothing beyond the download.

Justicetrix holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Alien Motion Detector has 31 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Alien Motion Detector | Justicetrix |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Rating | [3.9 (31 ratings)](https://appshunter.io/ios/app/alien-motion-detector/id578146041/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/justicetrix-super-heroes/id6747299746/reviews)** |
| Number of ratings | **31** | 1 |
| Positive reviews | 66.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Free** | Paid |
| Size | 30 MB | 17 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Joey To](https://appshunter.io/developer/578146044) | [MUHAMMED GUVEN](https://appshunter.io/developer/1780498583) |

## What reviewers say

### Alien Motion Detector

[App page](https://appshunter.io/ios/app/alien-motion-detector/id578146041)

This app is for entertainment purposes only, simulating alien detection. Users can place and interact with virtual aliens on their screen, watching them move and react. It utilizes device gyroscopes for an interactive experience.

**Highlights:** Simulated alien motion detection, Place and draw virtual aliens, Aliens swarm to your location, Adjust alien behavior (count, speed, lifetime), Gyroscope-controlled interaction

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

**In-app purchases:** none

**What reviewers like**

- 🎵 Authentic sounds
- 🤩 Fan favorite
- 💯 Faithful representation
- 🎮 Fun for role-playing
- 💡 Good idea, well-executed

**What reviewers complain about**

- 💸 Overpriced for features
- 🐌 Slow ping/tracking
- 🚫 No sound reported
- 📱 Not working on newer iPhones
- 👎 Basic functionality

**Reported bugs**

- No audio/sound
- Won't add to watch screen
- Placing aliens on screen not working
- Can't add beeping sound
- Doesn't work on iPhone XS Max

**Requested features**

- Auto-generated movement setting
- Add Bluetooth detection for friends
- Integrate with location services
- Record feature
- Higher pitch sound as aliens get closer


### Justicetrix

[App page](https://appshunter.io/ios/app/justicetrix-super-heroes/id6747299746)

Train to become a hero with a wrist-worn system that tests your reflexes and decision-making. Engage in justice-driven missions and tactical transformations, optimized for smartwatches. Enjoy offline play with no distractions.

**Highlights:** Justice-driven missions, Tactical transformation system, Advanced wrist HUD interface, Optimized for smartwatches, Gesture-based input, Offline play, No ads

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Real Life Heroes | $1.99 | one-time |
| Real Heroes Pack | $1.99 | one-time |


## Frequently asked questions

### Is Alien Motion Detector free?

Alien Motion Detector costs $1.99, with no in-app purchases.

### Is Justicetrix free?

Justicetrix costs $2.99, and also offers in-app purchases.

### Which has better reviews, Alien Motion Detector or Justicetrix?

Justicetrix is rated higher. Alien Motion Detector averages 3.9 out of 5 from 31 ratings, while Justicetrix averages 5.0 from 1 ratings.

### Do Alien Motion Detector or Justicetrix have ads?

Neither Alien Motion Detector nor Justicetrix shows ads.

### Which is updated more often, Alien Motion Detector or Justicetrix?

Alien Motion Detector ships an update every 6 weeks, and Justicetrix every 6 weeks. Most recently, Alien Motion Detector was updated on November 1, 2026 and Justicetrix on October 30, 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.*