After you select a category of metric reports, the data appears in the detail area. The number of reports shown depends on the selected category.
The report for each metric has the same format. At the upper-left is the title of the report. Some reports have additional descriptive text below the title. The values for the metric are shown using a bar graph. Each bar shows the value for a version of your app released to the App Store. If there are multiple bars, the current version is the highlighted bar at the end of the graph. The scale used on the Y-axis depends on the metric.
If the report shows only one version of the app, the value for the metric is shown next to the graph. If the report shows multiple versions then the value next to the graph shows the difference between the last two bars in the graph.
To learn how to understand and use metrics, see Improving Your App's Performance.
Each battery metric is displayed as a bar graph showing the percentage of battery used over 24 hours.
The percentage battery use is broken down into a few different types. The specific types depend on whether the graph is for the foreground or the background:
Audio: Power used to play audio while in the background.
Display: Power used to show the application user interface on the screen.
Networking: Power used for networking.
Other: Other types of power use, such as Bluetooth, location tracking, and using the camera and flash.
Processing: Power used by the CPU and GPU.
The bar graph shows battery power used over a 24 hour period while the app is in the foreground and the device is disconnected from power. The percentage of battery use for previous versions is normalized to the average daily amount of use for the current version (shown under the report title.)
The bar graph shows the average percentage of battery power used over 24 hours when the app is in the background.
The bar graph shows the average launch time, which is the time between the user tapping on your app icon and the time that the system draws a screen other than the launch screen. The launch time is measured in milliseconds.
The bar graph shows the number of seconds per hour that the main thread of the app is unresponsive for more than 250ms. That is the maximum amount of time for responding to a typical user event before the app feels slow.
Memory use is measured in megabytes.
The bar graph shows the largest amount of memory in use when the app is suspended.
The bar graph shows the average amount of memory in use when the app is suspended.
The bar graph shows the average number of megabytes per day written to long term storage.