Get it here: https://software.charliemonroe.net/downie/ or on SetApp
What's new?
UI Redesign – the UI has been redesigned with more options at hand, while not cluttering the UI.
Menu Bar Control – control the app from the menu bar – without the need for the Dock icon.
Customizations – custom postprocessing using your own shell script, custom file name formatting, and much more.
Improved Speed – YouTube videos load up to 6 times faster with Downie 4 when compared to Downie 3!
Metadata Improvements – the metadata that Downie gathers can be written into an external JSON file for further custom processing.
Improved User-Guided Extraction – the UGE window now has history, allows saving favorites and much more.
... and much more! - many minor improvements, like custom naming schemes, option to force MP4 downloads, better cancellation, priority flags, etc...
Without considering their "convert quality photos" feature that doesn't work at all, even after months of reporting such issue.
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PS: picture from https://one.google.com/storage/management