Looking for something I can play my music from my iPhone 6s in my car?

I have a pretty old car so I can't use Bluetooth etc to play music from my phone in my car but I'm looking for some kind of transmitter (not sure if this is the name) so I can play music in my car from my phone, preferably one where I can skip through music etc using the car not the phone if they exist (my sister has one which connects at 88.7 but she can only skip music through her phone, not by the car)

Be easier if your stereo has an AUX port

then you just need the proper cable

otherwise

if youre intending to keep the car for a bit longer how about you buy an aftermarket stereo that includes the features you want

then youd have the advantage of hands free chat too

not that expensive and not that hard to install for a vaguely intelligent person

anyway

all your answers will be found at a car audio store