Little Eye is an awesome performance analysis tool for Android developers that helps you measure, analyze and optimize Android Apps.
It takes zero coding effort. Just plug your phone to the USB, start Little Eye on your computer and you can start getting detailed stats on how much Power, Data, CPU, Memory and Disk Space your App is using. All the data is correlated with screenshots of the app as well as various events on your phone for you to gain deeper understanding of your app's performance. With Insights, quickly get actionable "next steps" to optimize your App's resource consumption, be it Memory issues, Battery drain, Excessive data usage or even frequent crashes. And it also gives a Performance Score for your app, so you can see where your App stands compared to other Apps, and what areas to focus on to boost performance!