What is the Better Way to Monitor Android Phone App

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9. APKInspector

APKInspector is an app that allows you to perform reverse engineering tricks. With this app, you can get the graphic features and analysis functions for the users to get a deep insight. This powerful Android hacking tool helps you get the source code of any Android app and visualize the DEX code to erase the credits and license.

Find the APK/Download link of this reverse engineering app here — APKInspector

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Android Performance monitoring [Part 2]

In the last part , we talked about Memory monitor and how to use them, and this part is going to be focused on CPU monitors and how to optimise CPU usage so apps run smoother and without any hiccups. we’ll start from some very basic tools and then proceed further to more advance tools.


While developing your application, you should check that user interactions are buttery smooth, running at a consistent 60 frames per second. If something goes wrong, and a frame gets dropped, the first step in fixing the problem is understanding what the system is doing.

The Systrace tool allows you to collect and inspect timing information across an entire Android device, which is called a trace . It shows where time and CPU cycles are being spent, displaying what each thread and process is doing at any given time. It also inpects the captured tracing information to highlight problems that it observes, from list item recycling to rendering content, and provide recommendations about how to fix them. for more details on how to capture systrace, refer Analyzing UI Performance with Systrace .

Hierarchy Viewer

This tool is used to optimise layouts. Layout is captured by hierarchy viewer and it generates a view tree with 3 attributes for each view with time taken, which are:

  • Measure
  • Layout
  • Draw

all attributes are color coded based on performance , green ones are fine while red ones need to be optimized. Layouts should be as shallow as possible, and not nested. More info on how to capture a layout using hierarchy viewer and interpretation are available in Android Docs .

Method Tracer

It lets you view the call stack and timing information for your app. This information can help you optimize and debug your app.

It shows which method took how much CPU time during execution and on which thread. Which can be used to move heavy task off UI thread to make it jank free.

Please go through Performing a Method Trace in the CPU Monitor for detailed instructions on how capture a Method Trace.

A Typical method trace.

So we have captured the method trace, now we observe it and try to optimize our code, we are still using the same app to be profiled which we used in part 1. i.e Popular Movies . The chart can be zoomed in using scroll buttons and dragged to pan around. There is also a search button on top right where we can search specific methods in the selected thread.

by digging around a bit I found that all the database calls were running in main thread. In the ideal case, this is a huge flaw and should never happen.

here, we can see that a single Database call is on UI thread which is taking 26ms wallclock time and to achieve 60 FPS in any app, we get 16ms to draw any frame, in this case 2 frames will be dropped which is a large performance hit, ideally this should have been in background. Thanks to Rxjava , we moved the call in background thread in a couple of seconds and hence fixed the UI lag.

e.g: Method trace:

Thread: RxScheduler-3

And we can see by thread its not executing in UI thread anymore and has been moved to background thread, we achieved 60 FPS again.

The main advantage of monitors is to show information without making changes to code, which makes code neat and clean by keeping only relevant stuff.

These deductions are based on my specific app and may vary, the main purpose of this article is to enable devs to monitor and improve their code based on the scenario, how you fix a problem is up to you.

Observing the output of these tools is not very easy but practice make a man perfect, you’ll get the hang of it if you do it quite often, made another good observation? be sure to let me know in the comments down below.

Thanks for reading, Next part will include CPU performance monitor and tools. Follow me and Mindorks so you’ll get notified when I write next part.

Check out all the Mindorks best articles here.

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    2. Spyzie

    Spyzie lets you retrieve extensive details relating to the monitored device without blowing your cover. And it doesn’t even require you to root the device. The app can be used to track location, contacts, call logs, text messages, and much more. It also has the capability to monitor popular social media apps like Facebook, Instagram, Snapchat, etc.

    Advanced features such as Keylogger, screen capture, call recording, ambient recording and others make it a tempting solution for people who have an intention to watch over their loved ones or employees. The best part is Spyzie stays 100 percent invisible on the target device as the app icon disappears once you install it on the desired device.

    That said, you are required to access the target device manually in order to set up the program.


    Spyzie is now compatible with Android 8.0 Oreo. But it’s unclear whether it still supports devices running previous Android OS versions such as 7.0 Nougat, 6.0 Marshmallow, 5.0 Lollipop, 4.4 KitKat, etc.


    Spyzie has two subscription plans for users: Ultimate Edition and Premium Edition. The Ultimate Edition offers limited features, so the yearly license will cost you .88 a month. Whereas the Premium Edition lets you up your spy game with a huge cache of features. As a result, the price is also steep, i.e. .99 for a year’s license.


    • The program offers almost all the spying features that are available on other popular software.
    • It offers a schedule restriction feature that enables users to limit device’s usage.
    • With App Activity graph, you can instantly determine which apps monitored person is using more often.


    • The price of the app is on the higher side.
    • Often fails to download call and ambient recordings.
    • Doesn’t update GPS location in real time.
    • After-sales service is poor. Their customer service persistently fails to address users’ issues.
    • Spyzie is deceiving potential buyers of others spy apps by running fake online ads such as this one.

    Rating: 8.3 out of 10

    Free mobile spy app for androidImportant Features of appMonitor Location tracking How to Keep Your Data Use in CheckTOP10 BEST CELL SPY APPS

    10. iSpyoo

    iSpyoo is another solution to hack into someone’s Android phone or tablet without them knowing about it. The spyware has solved the problem to effectively snoop on people who carry some sort of mobile device. It helps you see their day-to-day online and real-world activities, be it their phone calls, messages, IM chats, social media activities, multimedia files, and more.

    It gives you advanced features like remote mic activation, ambient recording, accessing deleted information and others to quench your thirst for spying. Auto spy is another interesting function that you will find in this application. It allows you to make a secret call to the target phone.


    Unfortunately, compatibility is not the strongest side of this service as it supports devices running Android 2.0 to 5.0 OS.


    There are three different packages for iSpyoo users that carry different price tags and different features. These are called standard, premium and gold packages. The standard plan is available for .99 per month, the premium is available for .99 per month, while gold can be availed for .99 per month.


    • iSpyoo has made it easy to check all call logs and complete contact list.
    • It has made tracking text message easier than ever.
    • Recovering deleted information is another forte of this app.
    • The app lets you locate the target in a matter of seconds.


    • Offers a limited set of features.
    • The solution is not that stable and consistent when compared to competing spy apps.
    • Limited support makes it a less suitable option for those who want to use it on multiple devices.
    • There is no refund policy.
    • You won’t find a live demo or free trial version of iSpyoo.
    • Customer service fails to take care of their users.

    Rating: 3.8 out of 10.

    How We Rated These Android Spy Apps?

    Our analysis of the above apps will enable you to make an informed decision when choosing an app to spy on an Android device as we have used the following criteria to rate these top 10 Android spy apps of 2018:

    • Ease of use
    • Features
    • Performance
    • Limitations
    • Compatibility
    • Pricing
    • Customer Support
    • Live Demo/Free Trial

    We have taken a weighted average of the aforementioned criteria to give each app it’s overall rating.


    Xnspy stands out from the herd as it comfortably meets the criteria required by the users looking to buy a reliable spy app. It’s easy to use, delivers consistent performance, offers an extensive array of features and first-rate after-sales, and even allows you to try-before-you-buy with relatively few limitations.

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    Fleksy 2. TrackMyFone$ 4.990.00/Mon22 Jun 2018 .. app's parental-control app beat out PhoneSheriff ($89 a year), which is a good alternative on Android, particularly for monitoring texting.

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