I was scared too at first but I made a thread about this before I downloaded the app and lot of people told me the reason why they are asking permission to acces your channel is so you can see your views and stats and respond to comments. I eventually downloaded the app, it’s a really good tool and it doesn’t do anything to your account and no tubebuddy doesn’t have any rights expect to show you how you’re doing on views and help you with tags. I highly recommend the app some top YouTubers even use it.