Please update your app

Hi guys! This always pops up on my phone whenever I try to open my Smule Sing app:

"You are currently running an older version of the app. Please update the app to get the latest feature updates and bug fixes."

ANd there are no other options but to click OK and it redirects to the APP store. I do not want to update the app yet due to some reasons. What I really want to know now is how to disable that pop up notification. Please help me. Thank you.