https://www.romhacking.net/hacks/6683/So I guess this is the right topic? My cousin showed me this and downloaded it from the mentioned site here but it's in .ips format. What does that exactly mean and now to run it?
-edit-
It seems to be not available for mobile, is that correct?
Look for "Patch online NOW" on that site. It opens a rom patcher that can be run in the browser and the patch is already preselected. You just need to provide the correct base game rom.
Of course I can't share any links here but looking for "No Intro" sets in the "Roms Megathread 4.0" (Google is your friend) should serve you well.