Naughty or Nice Test vs Brain Printer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Naughty or Nice Test
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.
- Simulated fingerprint scan
- Naughty or nice determination
- Customizable scan speed
- Set custom responses
- Prank functionality
- Holiday entertainment
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*Note: This app is meant for entertainment purposes only. The thumb print scan is only a simulation, and it does not actually have the ability to tell if you have been naughty or nice! Will Santa be bringing you presents or coal this year? Have you been naughty or nice? There is only one to find out! Naughty or Nice is a novelty prank thumb print scanner app that tries to determine if you have been naughty or nice based on a mock fingerprint scan. Simply place your thumb on the scanner and the app will tell you if you have been naughty or nice! Great app for Christmas parties or for the kids! Naughty or Nice also contains a couple of customization options. You can adjust the speed of the scan simulation, and you can even set your own custom response, so that you can play the ultimate prank on your friends and family!
Brain Printer
Scan your head to estimate brain volume and generate a 3D-printable model. This app uses facial scanning to calculate head circumference and convert measurements into a downloadable STL file for 3D printing.
- Brain size estimation
- Facial scanning technology
- 3D model generation
- Downloadable STL file
- Share results
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Measure Your Brain Size & Create a 3D Model Scan your head, estimate brain size, and generate a 3D-printable model in seconds. Using facial scanning technology, the app calculates head circumference and brain volume, then converts the data into a downloadable STL file. Features: • Brain Size Estimation – Get an approximation of your brain volume based on head measurements. • Face Scanning – Uses your device’s camera to capture head shape and dimensions. • 3D Model Generation – Creates a printable STL file of your estimated brain size. • Download & Share – Save your model for 3D printing or share your results. Get started now and turn your scan into a 3D model. End User License Agreement: www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Brain Printer at 5.0 against Naughty or Nice Test's 4.5. Brain Printer also leads on ads (none vs shown) and update cadence (fortnightly vs every 11 months). Naughty or Nice Test's advantage is ratings volume (89 vs 2). On price, in-app purchases, monetization model and device support 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. Naughty or Nice Test sells 1 one-off in-app purchase and Brain Printer sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Brain Printer 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 has 89 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 86% of Naughty or Nice Test's written reviews are positive against 100% of Brain Printer's.
Naughty or Nice Test ships an update every 11 months, Brain Printer fortnightly. The most recent releases landed on September 25, 2026 and June 4, 2026 respectively.
| Parameter | Naughty or Nice Test | Brain Printer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (89 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 89 — better | 2 |
| Update frequency | Every 11 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 5 MB | 220 MB |
| Age rating | 4+ | 17+ |
| Developer | Brandon Stecklein | Steven Strange |
Customer experience
Naughty or Nice Test
Brain Printer
In-app purchases
Naughty or Nice Test
- Advertising Removal$2.99
Brain Printer
- Save Unlimited STL Files$2.997 Days
- Single STL File$4.99
Questions
Is Naughty or Nice Test free?
Is Brain Printer free?
Which has better reviews, Naughty or Nice Test or Brain Printer?
Do Naughty or Nice Test or Brain Printer have ads?
Which is updated more often, Naughty or Nice Test or Brain Printer?
Other comparisons
