  Altermagnets (AM) is a recently discovered class of collinear magnets that
share some properties (anomalous transport, etc) with ferromagnets, some (zero
net magnetization) with antiferromagnets, while also exhibiting unique
properties (spin-splitting of electronic bands and resulting spin-splitter
current). Since the moment compensation in AM is driven by symmetry, it must be
possible to identify them by analyzing the crystal structure directly, without
computing the electronic structure. Given the significant potential of AM for
spintronics, it is very useful to have a tool for such an analysis. This work
presents an open-access code implementing such a direct check.
