Might be doing a track day soon at SMSP that doesn’t have timing. What’s the best iphone app that does splits etc ?

I've been eyeing these body kits from Maxton - MAXTON DESIGN LTD - VW Arteon, specifically the front splits.

Is something you would consider? I think it does add some appeal.

Hey guys,
I currently have some morel splits in my front doors and a hertz 12" boxed sub in the boot driven by a hertz 4 way amp. Main problem I'm having is that the splits sound pretty harsh, too much top end, even with the treble setting all the way down. I've been told by an audio shop...