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From Spy App Reviews to Hacking Guides and Cell Phone Security.

Only legal and ethical ways to use spy apps!

Step by step guides for everyone.

Our Most Popular Articles

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mSpy Reviews

Our main mSpy Reviews page - the best selling spy app on the market. This in depth review reveals all. Find out the main features that set this software apart from the competition and see why it is our No. 1 pick.

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FlexiSPY Reviews

This is the main FlexiSPY Reviews page. This spy app is regarded as the most advanced because of it's call recording features. Find out what else makes this one of our top rated spy apps.

best spy apps compared

Find the Best Spy Apps

Here we have a head to head comparison of the best spy apps - Our recommendations. Lots of information to help you make the right choice ... and avoid getting scammed!

how to tell if your phone is hacked

How to Tell if Your Phone is Hacked

Think your phone is hacked? This huge guide will teach you how to tell if your phone is hacked in easy to follow steps. Lots of detailed information to help you find out for sure.

detect cell phone spy software

How to Detect Spy Apps

Think you have a spy app on your phone? In this article we tell you how to detect spy app software on your devices. Part of our online security section - must read!

how to hack a phone

How to Hack a Phone

The cornerstone of our Hacking series. Find out how to hack a phone in this easy to follow guide. We explode a few myths along the way and give you the truth.  

how to hack snapchat account

Snapchat Hack

Find out the truth about most online Snapchat Hacking tools and find out how to hack Snapchat the easy way. You don't need to be a tech expert!

how to hack someones instagram account

Instagram Hack

Our guide on how to hack Instagram - account, pictures and all activity. Don't be fooled by online tools claiming to be Instagram Hacks .... they don't work!

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Facebook Hack

Our guide on how to hack Facebook. The easy way to see all activity on their account including messages and pictures.

Explore Our Main Categories

Use our category pages to quickly find what you want to learn. Each page will lead you to more articles around each subject. Remember to check back often as we add new articles regularly!


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How Does Cell Phone Spy Software Work?

Hi There,

I'm Susan Kennedy.

I'm the owner of The Spy Software Guide - AcisNI.com.


This website has been running since 2011 - so I have been working with spy apps for quite a while now! I'm not some big company - just a real mom who has been working and writing about spy software - to help you make good, safe choices.


The website has seen many changes and so have the spy apps. It is keeping up to date with the latest changes that sets this site apart.


Have a good look around - I cover lots of subjects ....