@arminunruh thank you very much for getting back to me!
I tried the code, for some reason it doesn't work yet but I'll try again tomorrow. Here is what I tried:
<script>
if( jQuery('body').hasClass('https://www.ludwigschoepfer.de') && jQuery('html').hasClass('is-touchdevice') ){
window.location.replace("https://www.ludwigschoepfer.de/index");
}
</script>
Homepage is called "https://www.ludwigschoepfer.de", replace page should be "https://www.ludwigschoepfer.de/index" (by the way, the website is now online). I also tried as a slug-frontpage only '/home' without success.
If you see at first glance what went wrong, don't hesitate to let me know :)
Best!