This is a paid asset, but now you can download FPS Graph – Performance Analyzer Free.
Detail this asset from Unity Store: Original Link
FPS Graph – Performance Analyzer v1.03 (Latest version)
FPS Graph is a tool for tracking the frame rate of your scene over a period of time. This can help you distinguish spikes in the framerate and figure out how they can be eliminated.
Youtube: Video1 | Video2 | Video3
Forum: Support Thread
Features
– Color coding: CPU, rendering and other tasks are broken up into three different colors.
– Performance breakdown screen
– Memory Info: Displays the memory used by the Garbage Collector!
– Lightweight: Does not weigh down your project!
– Simple Setup: Just add the script to your camera
– Audio Feedback: You have the option to audibly hear the framerate. When your game is running along quickly it is a low rumble, but if it is struggling it is a high pitched whine.
– VR Support
Note: Unity’s built-in Stats menu is actually the estimated FPS (estimating what the fps would be if the game where not running in the editor), if you want them to be more in-sync close your scene view while previewing your build. More information here