Jass Butz is an app that allows you to play the two most popular Jass games in Vorarlberg.

First, there's Kreuzjass. In this game, two crosses are "gebutzed" (a game similar to scoring two points). The team that first scores all the points wins. Sacks (a game similar to scoring a point) can also be scored.

Second, there's the option of playing Schlangenjass (snake Jass). In Schlangenjass, the points from each round are tallied. The advantage over playing on paper is that you can enter the scores directly, making it much easier to play.