Imprint illusions vs Naughty or Nice Test Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Imprint illusions
Explore a vast collection of optical illusions, including impossible designs, high-speed photography, and captivating sidewalk art. This app offers hundreds of exciting visuals to entertain and amaze.
- Hundreds of optical illusions
- High-speed photography
- Sidewalk illusion art
- Impossible designs
- Exciting visuals
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iMprint illusions has the best collection of optical illusions, high speed photography and sidewalk illusion art on the App Store. Entertain yourself with hundreds of impossible and exciting illusions, stunning high speed photography and amazing sidewalk illusion art.
Naughty or Nice Test Meter
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.
- "Fingerprint Scan" for testing
- Animated elves analysis
- Get certified Nice or Naughty
- Customizable Santa's Certificates
- Save and share certificates
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Have you been naughty or nice this year? How about having your kids take the Naughty or Nice test and get certified as Nice? The Naughty or Nice Test Meter features a unique tool to create Nice/Naughty Certificates for your kids. FEATURES • “Fingerprint Scan” for testing (not an actual fingerprint scan but your kids will think it is!) • Beautifully animated elves analyzing your fingerprint • Get certified as Nice or Naughty • Outcome can be set to Random, Naughty, or Nice on the ‘Parents Only’ page • Validate Santa’s beautiful Official Certificates with your child’s photo, name and age • Parents can also edit certificate contents to encourage good behavior • Save or share your official Santa’s Nice/Naughty Certificates PLEASE NOTE All prices are in USD. Pricing in other countries may vary.
Screenshots
Verdict
The clearest difference is ads: Imprint illusions at none against Naughty or Nice Test Meter's shown. Imprint illusions also leads on update cadence (every 2 months vs every 7 months). Naughty or Nice Test Meter's advantage is ratings volume (4.8K vs 92) and review sentiment (43% vs 26%). On price, rating, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Imprint illusions sells 1 one-off in-app purchase and Naughty or Nice Test Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Naughty or Nice Test Meter holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Naughty or Nice Test Meter has 4.8K ratings behind it against 92, so its average is the more settled of the two. Written reviews point the same way: 26% of Imprint illusions's written reviews are positive against 43% of Naughty or Nice Test Meter's.
Imprint illusions ships an update every 2 months, Naughty or Nice Test Meter every 7 months. The most recent releases landed on October 31, 2026 and November 11, 2026 respectively.
| Parameter | Imprint illusions | Naughty or Nice Test Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (92 ratings) | 4.5 (4.8K ratings) — better |
| Positive reviews | 25.7% of reviews | 43.2% of reviews — better |
| Number of ratings | 92 | 4.8K — better |
| Update frequency | Every 2 months — better | Every 7 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Redwheel Apps | Dualverse, Inc. |
Customer experience
Imprint illusions
Naughty or Nice Test Meter
User reviews
Imprint illusions
From 92 App Store ratingsWhat we love
- 😄 Fun and entertaining optical illusions
- 👍 Good for showing friends
- 🎨 Interesting visual content
- 💰 Free or low-cost app
- ⭐ Some quality updates appreciated
Room to improve
- 😞 Very limited content (only 4-5 illusions)
- ⏱️ Gets boring within minutes
- 🖼️ Poor image quality and resolution
- 🔤 Cluttered interface and bad layout
- 📱 Multiple illusions crammed per page
Naughty or Nice Test Meter
From 4.8K App Store ratingsWhat we love
- 👍 Fun app
- 🎅 Tells you if you're on the nice list
- 💡 Interesting concept
Room to improve
- 🐛 Inconsistent results
- 😞 Makes kids feel bad for being 'naughty'
- 🤖 Fingerprint scanner not accurate
Bugs and requests
Imprint illusions
Reported bugs
5 issues- App crashes and won't open
- Images appear distorted or fuzzy
- Some illusions don't work properly
- Inconsistent display of content
- Phone stability issues after installation
Requested features
11 requests- Add significantly more optical illusions
- Implement full-screen image viewing
- Provide explanations for each illusion
- Improve user interface and layout
- Add zoom functionality for images
Show 6 moreShow fewer
- Display one illusion per page
- Add daily or regular content updates
- Improve image quality and resolution
- Add ability to save images to photo album
- Include background information on illusions
- Better organization of content
Naughty or Nice Test Meter
Reported bugs
3 issues- Keeps saying 'naughty' even for good behavior
- Doesn't recognize different fingers properly
- Crashes or freezes frequently
Requested features
3 requests- More detailed feedback on why you're naughty or nice
- Option to customize 'naughty' or 'nice' criteria
- Integration with real Santa/elf system
In-app purchases
Imprint illusions
- NO ADS$1.99
Naughty or Nice Test Meter
- Premium Certificate$3.99
Questions
Is Imprint illusions free?
Is Naughty or Nice Test Meter free?
Which has better reviews, Imprint illusions or Naughty or Nice Test Meter?
Do Imprint illusions or Naughty or Nice Test Meter have ads?
Which is updated more often, Imprint illusions or Naughty or Nice Test Meter?
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