Mood Finger Scan is a free iPhone application developed by Indigo Penguin Limited. As the name suggests, this app allows you to scan your finger to discover your mood. The app uses a unique algorithm to analyze your fingerprint and provide you with an accurate result.

The interface is user-friendly and straightforward. Upon opening the app, you will be prompted to scan your finger. Once the scan is complete, the app will display your mood along with a corresponding emoticon. You can also view a history of your previous scans and compare your moods over time.

Overall, Mood Finger Scan is a fun and entertaining app that can provide a quick and easy way to check your mood. However, it should be noted that the results are not scientifically proven and should not be relied upon for any serious purposes.