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PULSE
Japan crowd counts: now, 1 hour ahead, 2 hours ahead
PULSE predicts people counts at places across Japan now, 1 hour ahead and 2 hours ahead. Explore a map, search or ask in chat to find quieter places or livelier venues. Free on iPhone; no account needed. Currently in Japanese. Developed with GPT through Codex and Claude, with over 3 billion data records and 2.6 billion record-level prediction comparisons.
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 was submitted on Product Hunt and earned 1 upvotes and 1 comments, placing #154 on the daily leaderboard. PULSE predicts people counts at places across Japan now, 1 hour ahead and 2 hours ahead. Explore a map, search or ask in chat to find quieter places or livelier venues. Free on iPhone; no account needed. Currently in Japanese. Developed with GPT through Codex and Claude, with over 3 billion data records and 2.6 billion record-level prediction comparisons.
PULSE was featured in iOS (110.8k followers), Travel (42.6k followers) and Artificial Intelligence (479.1k followers) on Product Hunt. Together, these topics include over 175.3k products, making this a competitive space to launch in.
Who hunted PULSE?
PULSE was hunted by Yuto Chiba. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how PULSE stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Yuto Chiba