The first major update for Cloud Tuner is now live! With version 1.1 I've added support for Google Drive and OneDrive. There's also been a significant reduction in sync times, especially on larger libraries. Along with all that there's the usual various bug fixes and improvements you might expect.
I've got quite a few more major ideas that I would like to implement, but for the time being future updates will be focused on smaller features and quality of life updates, so stick around!