Track App Energy Usage Mac

Jun 25, 2017  An app like DJI Go is using your phone’s GPS module to monitor your location and therefore keep that in tap with the drone’s location. An app like Pokemon GO takes into account your location in a very similar, if not exact, way that a map app does. Again, this is a high rate of tracking and constant refreshing. Jul 10, 2020  Enable track changes. To turn on the track changes option, open your Pages document and click Edit Track Changes from the menu bar. You’ll then see a Review Toolbar appear at the top of the document. You should familiarize yourself with this toolbar so that you can use it effectively while tracking your changes and those of others.

  1. Track App Energy Usage Machine
  2. App For Tracking Phone Usage
  3. App That Tracks App Usage

A few time tracker apps can also sync data across devices. All of that helps you to be more productive. Time is a precious resource; you need to use it wisely. Here are some of the best time tracker apps that will help to boost your productivity. You can either go for free time tracking app or get a premium one. It lets you generate reports that give you all sorts of information in a graphical format, and, of course, has a smart phone app so you can watch your home’s energy use remotely.

Track App Energy Usage Machine

Apple's initiatives to minimize tracking by marketers is continuing to make life harder for the advertising industry, forcing advertisers to use inefficient data sources to pinpoint users.

Over the years, Apple has enhanced how it protects the privacy of its users online, typically by limiting what data can be seen by advertisers tracking different data points. Initiatives such as Intelligent Tracking Protection in Safari has helped secure more privacy by making it harder to track individual users, which advertising executives in December admitted has been 'stunningly effective.'

While ITP and other improvements have helped to minimize the tracking of users, marketers are also being affected by another element of iOS 13, one where users are regularly notified of apps that are capturing their location in the background. The warning gives options for users to allow an app to continue to track all the time or to do so when it is open, with users often selecting the latter.

According to data from location-verification firm Location Sciences seen by DigiDay, approximately seven in ten iPhone users analyzed by the company downloaded iOS 13 in its first six weeks of availability. Of those users who installed the update, around 80% of them stopped all background tracking by apps.

Ad tracking company Teemo suggests the opt-in rates to share data with apps when not in use are often below 50%, whereas three years ago, the same rates were close to 100%. The higher rates were due to it being a time when users were largely unaware there were options to disable tracking in the first place.

App For Tracking Phone Usage

'People have decided to stop their phones' sharing location data at a universal level,' Location Sciences chief business officer Jason Smith admitted.

The trend of disabling tracking makes it harder for firms to rate the effectiveness of campaigns, Starcom managing partner Paul Kasamias suggests. The change impacts 'the ability to tie users that research online and purchase in store,' as well as making measuring footfall in stores a 'far more opaque' process for clients.

A drop in advertiser spending is likely to occur from small or medium-sized advertisers, Kasamias believes, as they are clients 'where cost efficiency is paramount and there is a physical footprint, as targeting the right user at the right time will become more difficult.'

The change has already led to a reduction in 'sales pitches from providers of location-data solutions,' Havas Media EVP Sargi Mann claimed, with there being more of a need to address the location issue 'transparently up front as part of bigger deals' with marketers.

Despite the reduced amount of location data available, the amount that is still available to use is more valuable, while the market for location data continues to thrive.

'We're still being approached by location data businesses that are telling us they're growing, said Rippll CEO Doug Chisholm. 'More importantly, they have more data than they did a year ago.'

The quality of that data is still a problem, as ad buyers notice it is of a lower quality than data that was previously available. According to Smith, Location Sciences is seeing less location data derived from a smartphone's GPS, 'which is the most precise source of mobile location data.'

Instead, Smith highlights the presence of 'lower quality data' sourced from carriers or other Internet protocols. 'Often the least accurate sources of mobile location data available' to a marketer in his opinion.

The reduction of available data may get worse for marketers, as Apple has urged developers to use 'Sign in with Apple' in apps, as an alternative to authentication systems offered by Google and Facebook. While Apple's system will make it harder to track individual users with less data offered to firms, data collection will still be possible for the firms involved.

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Measure Energy Impact with Instruments


App That Tracks App Usage

The debug navigator in Xcode includes an Energy impact gauge, which provides a high-level overview of energy usage as you test your app. Consult this gauge regularly throughout your app’s testing cycle to assess your app’s energy impact and identify potential problem areas up-front. See Debugging Gauges. Dive into Instruments if more in-depth analysis is needed.

The Instruments app, which is included with Xcode, gathers data from your running app and presents it in a graphical timeline. You gather data about performance areas such as your app’s CPU usage, disk activity, network activity, and graphics operations. By viewing the data together, you can analyze different aspects of your app’s performance to identify potential areas of improvement.


For detailed information about using Instruments, see Instruments User Guide.

Use the Energy Diagnostics Profiling Template

The Energy Diagnostics profiling template monitors factors that affect energy usage on an iOS device, including CPU activity, network activity, screen brightness, and more. Identify the areas where usage is highest, and see if you can reduce impact in those areas. For example, you might find opportunities to defer discretionary or network tasks until more energy efficient times, such as when the device is plugged in or on Wi-Fi.

  1. Launch Instruments and create a new trace document that targets your device and app with the Energy Diagnostics profiling template.

  2. Click the Record button () or press Command-R to begin recording a trace.


    For best results, consider performing the trace wirelessly. Doing so will allow you to more accurately profile the device in a real world scenario—on battery power, with accelerometers, and so on. To learn how to enable wireless device profiling, see Target an iOS Device Wirelessly in Instruments User Guide.

  3. Use the app normally on the device, while allowing energy data to be collected.

  4. Click the Stop button () or press Command-R again when complete.

  5. Go through the collected data and look for spikes or areas of otherwise unusual or unexpected activity. Then, review the code in these areas to determine whether improvements can be made.


The Energy Usage instrument indicates a level from 0 to 20, indicating how much energy your app is using at any given time. These numbers are subjective. If your app’s energy usage level is occasionally high, it doesn’t necessarily mean that your app has a problem. Your app may simply require more energy for some of the tasks it performs. For example, it may use the GPS while performing complex network operations. This is valid energy use. What you should look for are spikes or areas of high energy use that are unexpected or that could be performed at more optimal times.

Log Energy Usage Directly on an iOS Device

Without tethering your device to Instruments (either wirelessly or wired), you can log energy-related data under normal use in order to take realistic measurements. With energy logging enabled, your iOS device records energy-related data unobtrusively while the device is used. Because logging is efficient, you can log all day. Logging continues even while the device is in sleep mode. However, if the device’s battery drains completely or the iOS device is powered off, the log data is lost.

  1. Go to Settings > Developer > Logging on your device.


    To see the Developer settings, you must provision the device for development and plug it into your Mac while Xcode or Instruments is running. If your device hasn’t been provisioned yet, see Configuring Your Xcode Project for Distribution and Launching Your App on Devices. Even after the device has been provisioned, the Developer setting disappears when the device is rebooted or powered off. To restore the setting, reconnect the device to Xcode or Instruments.

  2. Enable energy logging.

  3. Tap Start Recording.

  4. Use your device normally.

  5. When you’re done, return to Settings > Developer > Logging and tap Stop Recording.

To import logged energy data from an iOS device
  1. Launch Instruments and create a new trace document that targets your device and app with the Energy Diagnostics profiling template.

  2. Choose File > Import Logged Data from Device.

    The logged data is imported and displayed in the timeline and detail panes.

Use Other Profiling Templates and Instruments to Measure Energy Use

A variety of factors affect the energy used by an iOS app. Although the Energy Diagnostics profiling template analyzes a range of statistics, you can use other profiling templates and instruments to examine and assess your app’s energy impact.

Activity Monitor Profiling Template. Use this template to monitor overall CPU, disk I/O, and network usage.

Core Animation Profiling Template. Use this template to measure graphics performance and CPU usage. Enable the Flash Updated Regions setting of the template’s Core Animation instrument to see each screen update occurring in your app and watch for unnecessary or unexpected updates.

GPU Driver Profiling Template. Use this template to measure GPU driver statistics and sample active CPU usage.

Location Energy Instrument. Use this instrument to measure the energy impact and duration of requests to Core Location.

Metal System Trace Profiling Template. Use this template to measure the performance of iOS Metal applications by tracing information from the application, driver, and GPU layers.

Network Profiling Template. Use this template to analyze the TCP/IP and UDP/IP connections your app uses.

Time Profiler Profiling Template. Use this template to perform low-overhead time-based sampling of running processes. Time Profiler watches the running threads in your app and takes samples at regular intervals. A complete backtrace is collected for each sample, allowing you to drill down into a sample to find exactly where in your code large amounts of time are being spent.

Track App Energy Usage Mac

Your Custom Template Here. The templates and instruments above provide high value by analyzing multiple aspects of your app, which may affect energy. If you prefer to focus in on a more specific area, however, you can add individual instruments to the Blank profiling template. For example, you might add the CPU Activity instrument since energy usage is tied closely to how much CPU your app uses over time. If you think you might need to perform the same type of analysis again, be sure and save your configuration as a template. See Save a Trace Document as a Profiling Template in Instruments User Guide.

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Again, with all templates and instruments, monitor for spikes or areas of high or unexpected activity, and see whether you can improve those areas to reduce network, CPU, and other resource utilization.

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