To assess the scientific potential of the LIFE mission and support technical trade-offs we are developing LIFEsim, a publicly available software tool to simulate LIFE observations.
The current version of the tool, including installation information and documentation, is available here. The corresponding paper "Large Interferometer for Exoplanets (LIFE): II. Signal simulation, signal extraction and fundamental exoplanet parameter
from single epoch observations" (Ottiger et al.) is currently under review by Astronomy & Astrophysics.