The 1.6.1 version of DataReader for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The software lies within Education Tools, more precisely Science. The actual developer of this free software for Mac is Daniel Cote.
From the developer:
Data Reader is a scientific application that allows you to read the data from a graph and export the information to an ASCII file for further processing. For instance, if you have a graph in digital format, you can extract the data using Data Reader to use it in a spreadsheet.
You may want to check out more Mac applications, such as sciatrope, Analytics to Earth or TreeView X, which might be related to DataReader.