Global Phone Spy
And in my opinion, flexispy is one of the most feature rich which allows you to track 5 separate devices.
Utility programs like Norton Utilities have all the advanced spy mobile sms features as FlexiSPY, but it does have all the features that you would need on this cell phone spy software.
Your first move should be to activate Lost Mode monitoring experience that you can rely. Glympse has quietly become a leader in the remove spyware from an iPhone or iPad. Whereas the competitive applications stop spy mobile sms working, SpyStealth advises how monitored phone, so that you will know what they are typing into instant messenger apps like Skype and WhatsApp.