Flexispy and Mobile Spy are the leading "spyphone" programs and compete for top position for monitoring and tracking software. MobiStealth offers comparable features plus a little bit more.
They are 'stealthy' which means phones can be monitored discretely, and compatible with BlackBerry, iPhone, Android, Flexispy and Mobile-Spy also Symbian and Windows Mobile.
PhoneSheriff / Mobile Nanny (from the makers of Mobile Spy) and Net Nanny Mobile are designed for parents that are looking to get involved in monitoring and controlling how smartphones are used. MobiStealth, Flexispy, Mobile Spy, and WebWatcher Mobile are more about taking a sneak peek to see what's going on.
Mobile Spy is by far the most widely used spy phone software with popular basic features and reasonable pricing.
Flexispy has Spy Call and Intercept Call to remotely control the phone microphone and turn it into a remote listening device and to even tap cell phone conversations.
MobiStealth offers phone tap and eavesdropping features similar to Flexispy plus Call Recording, Web History and Image Logging for some phones.Read More Compare Features