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I spent 30 years in Japanese construction — carpenter, site supervisor, CM. I watched homeowners get systematically overcharged. HORIZON SHIELD uses AI to diagnose construction cost estimates. Upload a quote photo and get a diagnosis in 30 minutes. Real case: found ¥500,000 in overbilling on a ¥3,800,000 quote. Backed by Japan's first open construction cost database (87 plans, 88 fraud patterns, CC-BY 4.0) on Zenodo and GitHub. Free AI diagnosis via ChatGPT and LINE.
I built this after 30 years watching homeowners get overcharged in Japan's construction industry. The AI flags overbilling in 30 minutes — something that used to require hiring an expert. Happy to answer any questions about Japanese construction costs.
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About HORIZON SHIELD on Product Hunt
“AI cost diagnostics by a 30-year carpenter”
HORIZON SHIELD was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #132 on the daily leaderboard. I spent 30 years in Japanese construction — carpenter, site supervisor, CM. I watched homeowners get systematically overcharged. HORIZON SHIELD uses AI to diagnose construction cost estimates. Upload a quote photo and get a diagnosis in 30 minutes. Real case: found ¥500,000 in overbilling on a ¥3,800,000 quote. Backed by Japan's first open construction cost database (87 plans, 88 fraud patterns, CC-BY 4.0) on Zenodo and GitHub. Free AI diagnosis via ChatGPT and LINE.
HORIZON SHIELD was featured in Open Source (68.4k followers), Artificial Intelligence (468.5k followers), GitHub (41.2k followers) and Construction (1.4k followers) on Product Hunt. Together, these topics include over 126.5k products, making this a competitive space to launch in.
Who hunted HORIZON SHIELD?
HORIZON SHIELD was hunted by THEHORIZONS INC. 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.
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THEHORIZONS INC