Show HN: OnCallManager – Simple on-call management tool for small/medium teams

After years of dealing with bloated and overpriced on-call scheduling tools, I finally decided to build something lightweight and focused — OnCallManager.app. It’s a clean, no-frills way to create, and manage on-call rotations for small teams. Features: - Weekly visual schedule - Easy switching using override just in case. - Google calendar integration - (Upcoming) AI agents for oncall issues. (summary, auto-reply and etc)