Lattice dynamics govern thermal conductivity, phonon transport, heat capacity, and other mechanical, optical, and electrical properties. High-accuracy phonon dispersion relations are essential for understanding these relationships. The finite displacement approach is one of the most widely used methods to obtain phonon dispersions, mostly because it is applicable to any atomistic force Calculator. Density functional perturbation theory, in contrast, needs to be derived and implemented for each DFT functional. The finite displacementbased computation is time-consuming as it requires the calculation (and collection) of all interatomic forces for a large number of supercells.