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Hello Billiard
Photo the table, get your carom shot with a success rate
Hello Billiard is a carom billiards coach. Take a photo of the table, it finds the balls, runs a physics simulation and shows you shot paths with a success rate tuned to your skill level. Five-and-a-half, Plus and Ball system numbers are drawn right on the rails. Works in the browser, offline, and your photos never leave the device.
Top comment
Hi Product Hunt 👋 I'm Sungkyun, a solo developer in Seoul, where carom (3-cushion and Korean 4-ball) is what most people play. The problem: at the table you *know* there's a shot, but you can't see it, and nobody's there to show you. Hello Billiard is the friend who leans over and says "thin hit, high right, three rails — about 60%." How it works: • Photo → table. Point your phone at the table. It finds the four cushion corners, corrects the perspective, separates the cue ball from the object balls, and draws the paths back onto your photo. • Physics, not a lookup table. It searches combinations of follow, draw, stun and side spin and shows up to five distinct paths. The success rate is a Monte-Carlo estimate — the same shot replayed 90 times with aiming/speed/tip errors sized to your level (beginner / intermediate / advanced) — so a beginner never gets recommended a shot they can't make. • System numbers on the rails. Five-and-a-half, Plus and Ball systems computed for the current layout and drawn at the actual rail positions, plus which system fits this position at all. • Tune it to your room. Cushion rebound and ball roll are adjustable and remembered, so the paths match *your* table. • Game mode. A difficulty ladder (same difficulty, different layout per player) so you can compete without copying each other's shot — plus handicap match, score race, daily layout and weakness drills. It runs in the browser as a PWA (add to home screen → works offline), and there are iOS and Android apps. Photos are processed on-device and never uploaded. The basics are free; Pro is a one-time purchase, not a subscription. Interface in English and Korean. I'd love to hear from 3-cushion players: which shot types or systems should it handle next?
About Hello Billiard on Product Hunt
“Photo the table, get your carom shot with a success rate”
Hello Billiard was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #434 on the daily leaderboard. Hello Billiard is a carom billiards coach. Take a photo of the table, it finds the balls, runs a physics simulation and shows you shot paths with a success rate tuned to your skill level. Five-and-a-half, Plus and Ball system numbers are drawn right on the rails. Works in the browser, offline, and your photos never leave the device.
On the analytics side, Hello Billiard competes within Android, iOS and Sports — topics that collectively have 180.1k followers on Product Hunt. The dashboard above tracks how Hello Billiard performed against the three products that launched closest to it on the same day.
Who hunted Hello Billiard?
Hello Billiard was hunted by Sungkyun Bae. 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.
For a complete overview of Hello Billiard including community comment highlights and product details, visit the product overview.