Naughty or Nice Scan vs Zen Lines
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Naughty or Nice Scan
This app simulates a scanner to determine if someone is naughty or nice, inspired by movie elves. Parents can use it to encourage good behavior in children by controlling scan results. It features animated graphics and realistic sound effects for an immersive experience.
- Controlled scan results (random, nice, naughty)
- Fantastic animated HD graphics
- Realistic sound effects
- Amazing light effect during scan
- Parenting tool for behavior management
Read full descriptionHide full description
► One of the MUST-HAVE parenting apps of 2025! Download now for FREE! Perfect for parents. This FREE scanner looks and works exactly as the one used by Santa’s Elves in the movies, unlike other apps in the app store. *** FEATURES *** - you control the scan result: set it to “random”, “nice”, or “naughty” - fantastic animated HD graphics - realistic sound effects - amazing light effect when scanning* - great for parents to keep their children from misbehaving *** INSTRUCTIONS *** Press the rear camera of your device to the forehead of the person that you want to scan and press the SCAN button. The scanner will start scanning with an amazing light effect, after which the results are presented. The scan result is set to "Nice" by default, but by pressing the Settings button you can change it to always show the “naughty” result, or a random result. *** If you like this free app please support it by rating it! *** * On supported devices with flashlight/torch function only. Caution: bright light! Do not look directly into light and do not point directly at eyes of people or animals.
Zen Lines
Embark on a meditative journey where your doodling transforms into a cool color mist, accompanied by soothing sounds. Express your inner peace through ink strokes that sing, finding tranquility and shaping your sound.
- Meditative doodling experience
- Sound and color mist effects
- Express inner peace through art
- Shape your sound with doodles
- Relaxing and tranquil gameplay
Read full descriptionHide full description
Take a meditative journey through sound and time. See your doodling drift away into a cool color mist while expressing your inner peace as your ink stokes sing. Find zen, draw doodles, shape your sound with Zen Lines.
Screenshots
Verdict
The clearest difference is review sentiment: Zen Lines at 100% against Naughty or Nice Scan's 39%. Zen Lines also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 1). Naughty or Nice Scan's advantage is ratings volume (954 vs 2) and iOS requirement (13.0 vs 18.6). On price 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 Scan sells 1 one-off in-app purchase. Zen Lines asks for nothing beyond the download.
Zen Lines holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Naughty or Nice Scan has 954 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 39% of Naughty or Nice Scan's written reviews are positive against 100% of Zen Lines's.
Naughty or Nice Scan ships an update every 5 months, Zen Lines every 2 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | Naughty or Nice Scan | Zen Lines |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (954 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 39.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 954 — better | 2 |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 32 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | First Class Media B.V. | CHASE PLACE LLC |
Customer experience
Naughty or Nice Scan
Zen Lines
Bugs and requests
Naughty or Nice Scan
Reported bugs
3 issues- Camera not working properly
- Scanning feature unreliable
- App freezes after multiple uses
Requested features
3 requests- Allow custom percentage settings
- Improve scanning accuracy and reliability
- Reduce ads or offer ad-free version
Zen Lines
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Naughty or Nice Scan
- Full version, no ads (CHRISTMAS SALE: 50% OFF!)$1.99
Zen Lines
No in-app purchases
Questions
Is Naughty or Nice Scan free?
Is Zen Lines free?
Which has better reviews, Naughty or Nice Scan or Zen Lines?
Do Naughty or Nice Scan or Zen Lines have ads?
Which is updated more often, Naughty or Nice Scan or Zen Lines?
Other comparisons
