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This week Qualcomm demystifies your phone's hardware, there's a prison break in space, and a battle suit gets serious.
Qualcomm is mostly known as a maker of ARM chips, cellular radios, and other bits of silicon that power many phones and tablets. However, the company has also produced a few system tools of Android. These are usually exclusive to Snapdragon chips made by Qualcomm, but the new Trepn Profiler app runs on all chips to help you take a closer look at your hardware and system performance.
Trepn Profiler includes six different system monitoring tools. You get a CPU frequency overlay, mobile data analysis, performance graph, CPU usage monitor, CPU load overlay, and network activity monitor. Several of these profiling presets can be used in the app as a way to monitor system activity while you do other things. For example, you can start a profile for CPU usage, and use your phone normally for a few minutes. When you check back with Trepn Profiler, you can see if an app you don't need is eating up a chunk of your CPU with background processes.
Most of the tests in Trepn Profiler can be activated in overlay mode, which positions a floating chart or graph on top of whatever you're doing. This is great for seeing what your phone or tablet is up to internally while you're actively using it. The CPU tests are particularly cool in overlay mode as you get a small graph for each main core in your device. Each of the graphs can be collapsed and moved around to keep them out of the way temporarily.
This is just the simple "presets" mode of Trepn Profiler. More technical users and developers might want to dig around in the advanced mode, which allows you to build your own presets to see how an app or the total system is working. When you create one of these custom presets, there are more than 30 different data points that can be logged including individual CPU core frequencies, memory use, screen state, battery power, and more. There are also a few extra automation and code auditing features for developers who are testing apps.
The app has a persistent notification when a profile is active, which you'll want to watch for. Accidentally leaving Trepn running in the background will chew through battery. It should shut down fine as long as you don't leave any floating windows or background profiles active. Trepn Profiler is a little more complicated than other system diagnostic tools, but there's a lot more power too. The app is completely free in the Play Store.