A truly useful piece of software? From Samsung? Color me surprised, too, but the company's new Game Tuner app is nothing short of incredibly handy for mobile gamers. As you may well know, playing visually-intensive games on your smartphone can demolish the battery fairly quickly. While most such games render at 1080p even on 2K displays like Samsung's, such resolutions can be big draws on both your remaining juice and your device's processor, causing throttling (and thus slowdowns) and excessive power drain. Samsung's new app lets you have a say in just how graphically hungry those games will be, allowing you to adjust maximum frame rate and resolution scaling.
For example, Hearthstone for Android on a Galaxy S6 edge+ renders at, near as I can tell, 1080p natively. With Samsung's Game Tuner app, you can turn that up to a full 1440p (aka 2K and probably not a great idea!), or all the way down to around 480p. The difference is very real. The frame rate can be adjusted from 15 to 60FPS.