Geophysicists rely on this software for specific use cases:

Click Invert . Watch the RMS misfit drop. A good inversion typically achieves RMS < 5%. If stuck at high RMS, manually freeze or release layers. Version 3.50 allows you to fix the resistivity of a known layer (e.g., water-saturated sand at 100 ohm-m) and invert only for thickness.

Provides both layered model inversion (typically 1–10 layers) and smooth model inversion (up to 100 layers) using Ridge Regression or Occam's inversion methods. Borehole Data Integration:

Interpex IX1D v3.50, VES inversion, resistivity sounding, 1D geophysics, Schlumberger array, Wenner array, groundwater exploration, Marquardt inversion, legacy geophysics software.