There are some apps on AppSumo that are just deeply in need of being called out. The value proposition to this one would actually be pretty high, if it worked properly.

So initially, you are introduced to a screen to customize preferences, and literally every image, every icon display, is broken. The channel preference customization buttons still work, but for some reason, every icon behind it doesn't display. Is that a big deal? Not really, so long as it does it's job-- but it's a lousy first impression. And what's more, WHY THE HECK DO OUR VIDEO PREFERENCES MATTER? YOU'RE A DATA SCRAPER. THIS STEP IS SILLY AND UNNECESSARY.

Second, connecting the application isn't very well documented. There's a video showing you how to use it, but I can see how everyone in the comments is confused. They've never installed an extension on Drive. So you need to authorize the app in several steps. I figured that part out, but it involved some trial and error.

Third. Well, the data is just 'off' sometimes. My first three channels scraped on Yotube say the channels all have -9223372036854780000 subscribers. Nevermind that you can't have that many 'negative' subscribers-- three separate channels have exactly -9223372036854780000 read as the channel out. I suppose the negative means they're deceased.

Fourth. The first channel I tested didn't pull any email (even though it was right there under the Captcha). The second and third channels pulled the email (which is why I'm gracious enough to give it 2 tacos).

I don't have the stomach to sit and try more channels, let alone test it on another platform. I recall reading a feature about generating contracts (which another Sumoling mentioned is the app's single saving grace)-- but after this numbing experience, and the developer's lack of responses, I can safely say you can pass on this. Developer has likely checked out.