# Naughty or Nice Test Meter vs Sleuth Star

The clearest difference is review sentiment: Sleuth Star at 100% against Naughty or Nice Test Meter's 43%. Sleuth Star also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 1). Naughty or Nice Test Meter's advantage is ratings volume (4.8K vs 4) and iOS requirement (10.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Naughty or Nice Test Meter sells 1 one-off in-app purchase. Sleuth Star asks for nothing beyond the download.

Sleuth Star holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Naughty or Nice Test Meter has 4.8K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 43% of Naughty or Nice Test Meter's written reviews are positive against 100% of Sleuth Star's.

Naughty or Nice Test Meter ships an update every 7 months, Sleuth Star daily. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Naughty or Nice Test Meter | Sleuth Star |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4.8K ratings)](https://appshunter.io/ios/app/naughty-or-nice-test-meter/id1062483244/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sleuth-star/id6766141307/reviews)** |
| Number of ratings | **4.8K** | 4 |
| Positive reviews | 43.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 2 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dualverse, Inc.](https://appshunter.io/developer/1145696722) | [Mathew Konopinski](https://appshunter.io/developer/1878437864) |

## What reviewers say

### Naughty or Nice Test Meter

[App page](https://appshunter.io/ios/app/naughty-or-nice-test-meter/id1062483244)

This app lets you test if you or your kids are naughty or nice with a fun "fingerprint scan" and animated elves. Generate official Nice/Naughty Certificates for your children, which can be customized and shared.

**Highlights:** "Fingerprint Scan" for testing, Animated elves analysis, Get certified Nice or Naughty, Customizable Santa's Certificates, Save and share certificates

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Certificate | $3.99 | one-time |

**What reviewers like**

- 👍 Fun app
- 🎅 Tells you if you're on the nice list
- 💡 Interesting concept

**What reviewers complain about**

- 🐛 Inconsistent results
- 😞 Makes kids feel bad for being 'naughty'
- 🤖 Fingerprint scanner not accurate

**Reported bugs**

- Keeps saying 'naughty' even for good behavior
- Doesn't recognize different fingers properly
- Crashes or freezes frequently

**Requested features**

- More detailed feedback on why you're naughty or nice
- Option to customize 'naughty' or 'nice' criteria
- Integration with real Santa/elf system


### Sleuth Star

[App page](https://appshunter.io/ios/app/sleuth-star/id6766141307)

Engage in a noir detective experience, meticulously searching crime scenes for clues. Analyze evidence with specialized tools and present your findings to a judge to unravel mysteries. Progress through a career ladder with unlockable items that alter gameplay.

**Highlights:** Crime scene investigation, Clue analysis with equipment, Present evidence to a judge, Six hand-crafted cases, Eight-rank career ladder, Unlockable items that change gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is Naughty or Nice Test Meter free?

Naughty or Nice Test Meter is free to download, with in-app purchases available.

### Is Sleuth Star free?

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

### Which has better reviews, Naughty or Nice Test Meter or Sleuth Star?

Sleuth Star is rated higher. Naughty or Nice Test Meter averages 4.5 out of 5 from 4.8K ratings, while Sleuth Star averages 5.0 from 4 ratings.

### Do Naughty or Nice Test Meter or Sleuth Star have ads?

Naughty or Nice Test Meter shows ads; Sleuth Star does not.

### Which is updated more often, Naughty or Nice Test Meter or Sleuth Star?

Naughty or Nice Test Meter ships an update every 7 months, and Sleuth Star daily. Most recently, Naughty or Nice Test Meter was updated on October 26, 2026 and Sleuth Star on October 14, 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.*