How to find Best Sms Trackers that Aren't a Scam?

Most of free sms trackers are packed with viruses.
Some of paid tools are scam.
So where to read real review about such type of apps?
I am just wondering if there any website where I could see the list of best sms trackers and their ratings?

Something like
Asked Nov 04, 2014
Edited Nov 04, 2014

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