Variables has got a new update and is now at version 1.0.6, which brings a few nice additions to the app and includes the previously introduced retina display compatibility and high-resolution graphics.
The main change in this release is the reworking of the preferences management, since the feedback suggested many of the features were hard to find. Now all options related to individual variables are part of a popover activated by long-pressing the variable icon in the model building view and it is much simpler to change variable kind and reorder the categories. Table and model preferences also gained in simplicity and are available from the toolbar.
Variables is undergoing more internal changes related to data storage, new data analysis methods and performance and I hope to show the results soon, after the main implications from the latest news about the future of iOS are clear.