It shows daily graphs for stars, issues, PRs, and forks, and there’s also an hourly stars view that makes bursts of attention really obvious (for example after a blog post or a Show HN).

You can also overlay the Hacker News feed to see how HN activity correlates with spikes in stars.

One technical detail that mattered to me: the tool uses the GitHub GraphQL API, so it captures the full star history even for repos with 40k+ stars. A lot of tools hit the API limit and effectively draw a straight line past that point, which hides the real trend.

Happy to hear feedback or ideas.