Unofficial Nummirock companion app. Information not guaranteed to be up to date but will be up to date with the printed version.
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This app helps you keep track of what's happening at a music festival. You can see the full lineup with times and stages, and create a personal schedule of the artists you want to see. It’s easy to check what’s on right now and what’s coming up next.

It also works offline, so even if you lose signal, your plan is still there. Simple and straightforward — just a handy tool to help you enjoy the festival without missing anything important.