NOS Mobile is a free antivirus application for Android developed by INCA Internet Co.Ltd. It is the mobile version of NOS (nProtect Online Security). The app falls under the category of Utilities & Tools and is specifically designed to protect Android devices from malware and other security threats.

One of the most notable features of NOS Mobile is its user interface, which changes color according to the security status of the device. This allows users to quickly detect any potential threats and take action accordingly. The app also offers a malware scan feature that determines whether installed applications and stored files are malicious or not. It also supports scheduled scanning. Additionally, NOS Mobile provides a security vulnerability assessment feature that scans the device for vulnerabilities and informs the user so that they can take action to modify them. The app also offers an optimization feature that provides cache file and memory cleanup. Lastly, NOS Mobile includes an anti-smishing feature that scans text messages (SMS) to detect malicious URLs and reports them.

Overall, NOS Mobile is a reliable and easy-to-use antivirus application that offers a range of features to protect Android devices from potential security threats.