Light Manager 2 - LED Settings is a free Android application that allows you to configure LED colors and flashing frequency for various notifications. Developed by MC Koo, this application provides an easy way to set up LED notifications for a wide range of apps, including SMS, MMS, Gmail, Facebook, Twitter, WhatsApp, and many others. Additionally, it offers configurations for low battery, battery charging, battery charged, no signal, roaming, no 3G/4G, no Wi-Fi, airplane mode on, silent mode on, vibration mode on, ringer mode on, mobile data on, Wi-Fi on, Wi-Fi hotspot on, GPS on, Bluetooth on, and NFC on.

The app offers three operating modes: normal mode, alternating mode, and screen mode. In normal mode, only the LED color for the first notification will flash. Alternating mode flashes a few LED colors alternately when multiple notifications are received. Screen mode alerts you to notifications on screen, and it is available for devices without a physical notification LED, but only for Android 4.3 and above.

Overall, Light Manager 2 - LED Settings is a useful application for customizing LED notifications on Android devices. For more information, including supported devices and FAQs, visit the developer's website.