The 1.1 version of LabCal for Mac was provided as a free download on our website. The application lies within Education Tools, more precisely Science.
From the developer:
LabCal is an utility to calculate molarities, to convert gram and mole and to compute dilutions of stock solutions.
Features:Slider-controlled SI-prefixes Automatic adjustment of values to SI-prefixes Switch between Dalton and kilo-Daltons
You may want to check out more Mac applications, such as RLPrint Plug-in Installer, PropCalc or Capacitor Lab, which might be similar to LabCal.