Collect stamps as you hike along the Via Alpina across Switzerland. There used to be a nice physical booklet and stamping stations along the route, but they were discontinued in 2025. This is where it lives on.
The pass works entirely without an account. Tap an empty space to add a stamp. Long press a stamp to edit it. All data is stored locally on your device. You can back up your progress and continue on any device with the dedicated progress link.