Grand Theft Auto IV
The app is mentioned in radio commercials. The commercials reveal that it's an app used to reveal the exact location of your family, and that it's just for kids. A man commenting on the app in the commercial claims that the app tracks down a microchip implemented in his children's brain.
Grand Theft Auto V
In Grand Theft Auto V the App appears as a heart that at the same time represents the letter "i" in the logo. Consist on a blue screen and lines with a sonar that tracks a red dot (the objective). When the player is close to the dot, the scales are zoomed to indicate an approximation. The sonar is oriented by a vehicle, so if the red dot is in the middle, the vehicle must travel on a straight line to reach. Now it takes a larger role, being used to track down debris, nuclear waste, and Michael De Santa in Fresh Meat. In these cases, Trackify App appears on the down-right corner, next to the Internet App.
- The radio commercials in Grand Theft Auto IV say that it reveals the exact location of whatever it's tracking down, but in Grand Theft Auto V, where the app is used, it seems to track down weak signals which get stronger the closer you get.
- In Fresh Meat, Lester Crest tells Franklin that the app is used to track down a microchip in Michael's cellphone, which indicates that the manufacturer of Trackify no longer implement their microchips into people's heads.