https://chromewebstore.google.com/detail/channelspy-the-pulse-of-y/igmekkkhojicgmlmljmfdkmhepkendlj?hl=en
ChannelSpy: The Pulse of YouTube's Dynamics - Chrome Web Store
Monitor subscriber counts, view counts, and engage with channel dynamics in real-time. Your ultimate tool for YouTube insight.
the pulseyoutubedynamicschromeweb