# Il-Young Jeong

- **Event:** [Claude Build Day](https://cerebralvalley.ai/e/claude-startups-build-day)
- **When:** Sat, Jun 13 at 9:00 AM – 10:00 PM (PDT)
- **Where:** San Francisco, CA
- **Team:** [Il-Young Jeong](https://cerebralvalley.ai/u/IYJEONG)
- **GitHub:** https://github.com/finejuly/Was-It-Just-Me/
- **Website:** https://finejuly.github.io/Was-It-Just-Me/
- **Demo video:** https://www.youtube.com/shorts/0b4tAqsSSs8
- **Gallery:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/26

Was It Just Me? is a low-power neighborhood signal app that runs quietly in the background and lets users send a signal within one second when they notice something unusual nearby. Instead of requiring a full report, the product focuses on immediate, lightweight input: a user senses something, triggers a signal, and check if it was not just them.

By aggregating signals that happen around the same time in the same area, the app helps estimate whether there may be a meaningful local situation developing. If many nearby users send signals simultaneously, the system can surface a rough sense of local risk or urgency while preserving user anonymity.

## More from Claude Build Day

- [Pulse by Raman Ahuja](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/23)
- [Sevah Robotics, Inc](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/24)
- [Quincy Labs](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/25)
- [unclaimedSF.org](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/27)
- [DogeHouse Babel](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/28)
- [Coachloop](https://cerebralvalley.ai/e/claude-startups-build-day/hackathon/gallery/29)

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