psignifit 2.5.6-4 (armhf binary) in ubuntu bionic

 Psignifit allows fitting of psychometric functions to datasets while
 maintaining full control over a large number of parameters. Data
 can either be read from text files or passed through a pipe.
 .
 Psignifit performs the calculation of confidence intervals as well as
 goodness-of-fit tests.
 .
 This is the command line version.