Tips need a free phone tracking app

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http://androidforums.com – I am looking for a free phone tracking app. I would like to track txt msgs, phone calls, internet history, location, etc. i cant find any apps that are 100% free. I have a galaxy s 2 and that os also the phone that i would like to track. I would also like it to be that the app os either invisible on the other phone or i can view all info on my phone. I dont care if its an app or a website as long as its 100% free and the other person wont know that im tracking them. Thanks for any help. (General)