Hi Product Hunt, I'm Yuto, the independent developer of PULSE. I wanted to answer a question a busy/quiet label doesn't fully answer: how many people might be there when I arrive? PULSE predicts crowd counts at shops, venues, facilities and stations across Japan, now, 1 hour ahead and 2 hours ahead. You can explore the map, search for a place or ask in chat. It's useful whether you want somewhere quieter or a lively place to spend time. I used GPT through Codex and Claude to develop and improve both the iPhone app and its core prediction system. The system handles over 3 billion data records, and development has involved over 2.6 billion record-level prediction comparisons, including repeated evaluations with different methods and conditions. In some evaluated places and conditions, agreement on three crowd levels has reached around 80%. This measures crowd-level agreement, and results vary by location. I publish the evaluation methods and results at https://pulseapp.jp/data . User reports help improve the forecasts. PULSE is live on the App Store, free to use and requires no account. It currently covers Japan and the interface is in Japanese. The images show demo places and illustrative forecasts. I'd love your feedback. Would English support make this useful for your next trip to Japan? What places and situations would you use it for?

PULSE

Japan crowd counts: now, 1 hour ahead, 2 hours ahead

Japan crowd counts: now, 1 hour ahead, 2 hours ahead