By far the best YouTube extention that has been released in a long time... and for free. Amazing! I love how this reduces and improves the UI experience and cuts out all the clutter. Its such a better experience. So feature packed. I love the multiple different views. The spreadsheet view is awesome. I love to go to my subscriptions and sort by number of views to see the most popular across all of my areas of interest.

Two pieces of constructive criticism I would say: I think that the extension would benefit a lot from a guided walk-through after you install it. I'm pretty technical and work in IT, but even I struggled to understand the functionality at first. Still a little unclear on how to use the Alchemy Lab. Second, on the spreadsheet view and across the extension, it would be great if their were more filter options. For example, I would like to be able to click on "Posted" and filter by things like "Today", "Last Week", "Last Month", "Last 6 Months", "Last Year", "All Time". Also I noticed it only queries 9 days of video history. I don't know if the number of videos is a YouTube limitation, but if possible it would be great if it could load like an all time history of videos. If you could do this. If it is instead a performance issue, you could make it an optional button that would force it to load with a progress bar. It could then save a cache after that data set loads, and you could have an option in settings to refresh and update the list on a set cadence. Combined with the filters would allow users to do things like "Filter by videos created by all subscriptions in the last 6 months... and sort by top number of views". I think the more filters that you can combine together, the more unique and helpful this extension would become. Those are just some future development ideas though. As is, the app is a huge improvement.