For jealous partners it could be the ultimate app -allowing you to see everything your partner does on their phone.
The mCouple app shows text messages, contacts, call history, and Facebook messages in real time.
It can even show you the GPS co-ordinates of the phone, allowing you to see exactly where your partner is at all times.
One users claims the app worked on his girlfriend's phone.
'It really works. Thanks to this app, I am single right now because I caught my ex girlfriend cheating, ' he said.
'By the way she was the one who told me to download this one.'
The free app creates an ID for each user.
Users can share IDs and start “mutually tracking” each other’s devices.
Users can then track this information from anywhere by signing into an online account and viewing it all on a dashboard.
The dashboard produces charts that show which apps have been used and how often, while the person’s location is plotted on to a map.