Naughty or Nice Test Meter is a free iPhone app developed by Dualverse Inc. that allows you to determine if you've been naughty or nice this year. It also offers a unique feature where you can create Nice/Naughty Certificates for your kids.

The app includes a "Fingerprint Scan" tool that gives the illusion of analyzing your fingerprint to determine your behavior. The beautifully animated elves add a touch of magic to the experience. Once the scan is complete, you will be certified as either naughty or nice.

Parents have the ability to set the outcome of the test to random, naughty, or nice on the 'Parents Only' page. The app also allows parents to validate Santa's Official Certificates by adding their child's photo, name, and age. Additionally, parents can edit the certificate contents to encourage good behavior.

While Naughty or Nice Test Meter is free to download and offers unlimited usage with limited features, upgraded features can be obtained through in-app purchases. It's important to note that these purchases will be charged to your Apple account. In-app purchases can be disabled in your device settings. Please be aware that all prices are in USD and may vary in other countries.