# Shifter UAR vs Naughty or Nice Test

The clearest difference is in-app purchases: Shifter UAR at none against Naughty or Nice Test's 1. Shifter UAR also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). On price, update cadence and device support there is nothing between them.

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

Shifter UAR ships an update every 7 months, Naughty or Nice Test every 11 months. The most recent releases landed on May 16, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Shifter UAR | Naughty or Nice Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (89 ratings)](https://appshunter.io/ios/app/naughty-or-nice-test/id949282046/reviews)** |
| Number of ratings | — | **89** |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 7 months** | Every 11 months |
| Monetization | — | Free with in-app purchases |
| Size | 183 MB | 5 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anomaly Productions, Inc.](https://appshunter.io/developer/534091935) | [Brandon Stecklein](https://appshunter.io/developer/498894252) |

## What reviewers say

### Shifter UAR

[App page](https://appshunter.io/ios/app/shifter-uar/id700229104)

**In-app purchases:** none


### Naughty or Nice Test

[App page](https://appshunter.io/ios/app/naughty-or-nice-test/id949282046)

This novelty app simulates a fingerprint scan to humorously determine if you've been naughty or nice. It's designed for entertainment, perfect for holiday parties or pranks, with customizable scan speeds and responses.

**Highlights:** Simulated fingerprint scan, Naughty or nice determination, Customizable scan speed, Set custom responses, Prank functionality, Holiday entertainment

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertising Removal | $2.99 | one-time |


## Frequently asked questions

### Is Shifter UAR free?

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

### Is Naughty or Nice Test free?

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

### Do Shifter UAR or Naughty or Nice Test have ads?

Naughty or Nice Test shows ads; Shifter UAR does not.

### Which is updated more often, Shifter UAR or Naughty or Nice Test?

Shifter UAR ships an update every 7 months, and Naughty or Nice Test every 11 months. Most recently, Shifter UAR was updated on May 16, 2026 and Naughty or Nice Test on September 25, 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.*