Light Flow is the type of app that is distinctively Android. It's both basic and complex at the same time, choosing a single aspect of your phone to mess around with (in this case, its notification LED) and providing a bunch of options for doing so. The latest update brings along a bunch of features, but it's particularly interesting if you own a Sony smartwatch or Xperia phone with an illumination bar.
Have a KitKat device? If so, you've made the leap to the latest version of Android faster than most other people. That's the fun part. You've also jumped to Android 4.4 before most apps. That's the not so fun part. While older apps are generally stable and compatible, sometimes an update is in order to iron out the kinks. Thus a new version of Light Flow is now available that makes the app more compatible with Android 4.4 and the Nexus 5.
Light Flow is the kind of app that best showcases Android's sensibilities: esoteric, amazingly customizable, and downright impossible on other platforms. The popular notification manager for devices with LED indicator lights has just had a big update to version 3.8, most notably bringing support for the popular NinjaSMS texting app. NinjaSMS users, make sure you're running the latest version of both apps, and enable Light Flow in the settings menu.