Thanks to Osmdroid, it's relatively easy to build a simple map application for Android, so here it is :

Opensnowmap app on google play

It offers simple online map browsing and piste / place search by name. I hope it is more convenient to browse ski trails than on your mobile browser, though I know that in the future I should provide a proper web-based mobile version of the site.

Be warned : this application is a paid-for one, and is mainly intended to support for server costs. It's hard to find a good way to call for support, but I found this solution both practical for donations and useful. So, if you like Opensnowmap, don't hesitate to give it a try.