You could have downloaded GruveSync 2.50 for Mac from our application library for free. The software lies within System Tools, more precisely Device Assistants. This free software for Mac OS X was originally produced by Muve, Inc.
From the developer:
GruveSync is a simple menu bar application that allows you to connect your Gruve device with your Mac computer. The synchronization application will run automatically and collect your data. Once this is complete, you will be brought to Gruve Online to log-in and view your results.
You may want to check out more Mac applications, such as toDoo, NWD-211AN Utility or BESAgent, which might be related to GruveSync.