SimThyr SimThyr
Ruhr-Universität Bochum

Download SimThyr

SimThyr is free software that is distributed under a BSD license. This open source model warrants maximum freedom to use, distribute and even modify the application for your purposes. Furthermore, the fact that SimThyr's sourcecode is public fosters transparency, scientific discussion and interpretation of simulation results. You may readily conceive the modellilng equations from the simulation algorithm and published papers on SimThyr and its model.

SimThyr has been compiled for major desktop computing platforms including Mac OS X, Linux and Windows. Source code is available for THINK Pascal (for Mac OS Classic) and Lazarus / Free Pascal (for Mac OS X, Windows and Linux).

Please follow the links below to download the SimThyr version that is appropriate for your hardware and operating system.

Current versions

SimThyr 3.3.3


  • Pilo et al. 1990: Structure parameters of a classical paper on the kinetics of T3 production in healthy adults.
  • Kubota et al. 2010: Patient parameters from a case series on polycystic thyroid disease.
Mac Mac
Windows Linux


SimThyr 3.0 to 3.3.2

SimThyr 2.0

Version History


Archive of preliminary versions


Mac Mac

SimThyr project entry at