Sungkyun Bae

Solo dev in Seoul. Small, useful apps.

About

Solo developer in Seoul, building under the name Studioroom. I make small, focused apps for things I actually do: TennisNote runs my tennis club's weekly doubles rotation and scores, Hello Billiard reads a carom table from a photo and suggests shots, HelloStoryboard takes a storyboard from sketch to animatic on iPad/Android/Windows/Mac, and HelloFeedback is a frame-by-frame video review tool. No accounts, no cloud, no subscriptions where I can avoid them. Happy to talk shop about indie app dev, Korean app stores, or tennis.

Links

Badges

Tastemaker

Gone streaking

Gone streaking 5

Maker History

Hello BilliardPhoto the table, get your carom shot with a success rate
Oct 2026

🎉

Joined Product HuntOctober 15th, 2026

Forums

•

10h ago

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.