# Monstrometer vs XenoSignal

The clearest difference is in-app purchases: Monstrometer at none against XenoSignal's 4. Monstrometer also leads on ads (none vs shown) and iOS requirement (9.0 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. XenoSignal sells 4 one-off in-app purchases. Monstrometer asks for nothing beyond the download.

Monstrometer ships an update every 3 months, XenoSignal every 2 months. The most recent releases landed on October 16, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Monstrometer | XenoSignal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/monstrometer/id335896676/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 71.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 51 MB | 62 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [T3 Digital Productions](https://appshunter.io/developer/335896679) | [ADAVII (PVT) LTD](https://appshunter.io/developer/1711708818) |

## What reviewers say

### Monstrometer

[App page](https://appshunter.io/ios/app/monstrometer/id335896676)

This app helps you identify and understand supernatural beings. It uses biometric scans and questions to assess if someone is a disguised creature like a zombie or vampire, and offers survival tips and videos.

**Highlights:** Biometric finger scan for creature identification, Psychometric questions to assess supernatural probability, Survival videos for various creatures, Tips for dealing with supernatural beings, Social game for tricking friends

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 😂 Hilarious and fun
- 👍 Great for messing with friends
- 💡 Identifies monsters accurately (according to users)
- 🤩 Never gets old
- 💯 Good for parties and icebreakers

**What reviewers complain about**

- 🐛 Frequent crashing
- 🐛 App force closes
- 🐛 Data loss due to crashes
- 🐛 Bugs and glitches
- 📉 Inconsistent results

**Reported bugs**

- Crashes frequently
- Keeps crashing
- Crashes every time
- Force closes
- Bug that makes the app crash and delete data

**Requested features**

- Update the app on the AppStore
- Add sound effects
- Make human a result option
- Add unicorn and pegasus monsters
- Show most common answer and past quizzes


### XenoSignal

[App page](https://appshunter.io/ios/app/xenosignal-alien-comm-and-wiki/id6749178646)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Recharge Battery | $0.99 | one-time |
| Gain Signal | $0.99 | one-time |
| Donate to the Developer | $0.99 | one-time |
| Remove Ads | $7.99 | one-time |


## Frequently asked questions

### Is Monstrometer free?

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

### Is XenoSignal free?

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

### Do Monstrometer or XenoSignal have ads?

XenoSignal shows ads; Monstrometer does not.

### Which is updated more often, Monstrometer or XenoSignal?

Monstrometer ships an update every 3 months, and XenoSignal every 2 months. Most recently, Monstrometer was updated on October 16, 2026 and XenoSignal on September 24, 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.*