Retina-X Studios has released v3.0 of its iPhone security software, Mobile Spy. The software is used to track an iPhone's SMS messages, GPS location and call history. The GPS location feature is new to the update, recording the device location every 30 minutes. Location data is based on triangulations of the phone's signal, and therefore cannot be monitored if the phone does not have a wireless signal.

The application functions silently, recording all phone usage without notifying the user. Mobile Spy transmits the information using the phone's wireless signal to the Internet. Administrators can then go online and monitor the information.

Mobile Spy is compatible with all iPhone models, while a different version is also available for Windows Mobile or Symbian OS platforms. Customers can choose between three different payment plans. The longest subscription lasts for one year and costs $100, while a six month plan carries a price of $70 and a three month subscription costs $50.