The Keeping Up With The Kardashians has yet to reveal what exactly the app is about, instead cryptically telling fans: "Can't wait to share the app that I've been working on for the past couple months... stay tuned!!!!"
Khloe, 30, not the first member of the Kardashian clan to work on a mobile game: big sister Kim Kardashian West, 34, has enjoyed phenomenal success with her Kim Kardashian Hollywood game, which allows users to create a virtual celebrity and work their way up the A List!
And younger sisters Kendall, 19, and Kylie, 17, Jenner are also working on their own app although, again, details haven't been released.
All three have also appeared in Kim's app as virtual versions of themselves.
Khloe's currently en route to Armenia with Kim, brother-in-law Kanye West and niece North, one. The family are visiting the country of their roots for the first time: their late father Robert Kardashian was Armenian-American.
Why is Khloe famous?
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