When Clawhauser runs to Bogo's office to tell him about Judy's discovery about the case, he finds out about Bogo's love for Gazelle when he catches him using the app.
Real Life Version
A real life version inspired by the app was published by Disney and had its own website under the address, https://dancingwithgazelle.com/intl/; however, this site now cannot be reached due to the page being closed down.
Adjust photo's brightness, size, and angle to fit the shape
When entering your age, if you put in that you were under 18 years old, you would not be able to upload and edit photos. Instead, the website would play a stock video of Gazelle dancing with a tiger dancer.