Explore HITRAN spectra natively on your Mac. Load HITRAN-format .par files, filter transitions by molecule and isotopologue, inspect line assignments, and display interactive stick spectra without writing code.

Apply Gaussian, Lorentzian, or pseudo-Voigt broadening to simulate absorbance, transmittance, or percent transmittance. Adjust molecule-specific burdens, zoom into narrow features, and export calculated spectra for further analysis.

Built for macOS Sequoia or later and optimized for Apple Silicon.

One-time purchase - $1.99

HitranLab